Common Weakness Enumeration
CWE-193
AllowedOff-by-one Error
Abstraction: Base · Status: Draft
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
299 vulnerabilities reference this CWE, most recent first.
CVE-2019-8268 (GCVE-0-2019-8268)
Vulnerability from cvelistv5 – Published: 2019-03-09 00:00 – Updated: 2024-09-17 01:16
VLAI
EPSS
VEX
Summary
UltraVNC revision 1206 has multiple off-by-one vulnerabilities in VNC client code connected with improper usage of ClientConnection::ReadString function, which can potentially result code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1207.
Severity
No CVSS data available.
CWE
- CWE-193 - Off-by-one Error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://ics-cert.kaspersky.com/advisories/klcert-… | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://www.us-cert.gov/ics/advisories/icsa-20-161-06 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kaspersky Lab | UltraVNC |
Affected:
1.2.2.3
|
Date Public
2019-03-01 00:00
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CVE-2017-2618 (GCVE-0-2017-2618)
Vulnerability from cvelistv5 – Published: 2018-07-27 19:00 – Updated: 2024-08-05 14:02
VLAI
EPSS
VEX
Summary
A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.
Severity
5.5 (Medium)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://marc.info/?l=selinux&m=148588165923772&w=2 | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2017/dsa-3791 | vendor-advisoryx_refsource_DEBIAN |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2017:0932 | vendor-advisoryx_refsource_REDHAT |
| https://git.kernel.org/pub/scm/linux/kernel/git/s… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2017:0933 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2017:0931 | vendor-advisoryx_refsource_REDHAT |
| http://www.securityfocus.com/bid/96272 | vdb-entryx_refsource_BID |
Date Public
2017-01-31 00:00
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CVE-2006-10003 (GCVE-0-2006-10003)
Vulnerability from cvelistv5 – Published: 2026-03-19 11:08 – Updated: 2026-07-15 01:28
VLAI
EPSS
VEX
Title
XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in st_serial_stack
Summary
XML::Parser versions through 2.47 for Perl has an off-by-one heap buffer overflow in st_serial_stack.
In the case (stackptr == stacksize - 1), the stack will NOT be expanded. Then the new value will be written at location (++stackptr), which equals stacksize and therefore falls just outside the allocated buffer.
The bug can be observed when parsing an XML file with very deep element nesting
Severity
9.8 (Critical)
8.8 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-19 17:08 UTC
Assigner
References
21 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
| TODDR | XML::Parser |
Affected:
0 , ≤ 2.47
(custom)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:2.47-6.1.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:2.47-6.el10_0.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:2.41-10.el7_9.1 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:2.44-12.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support |
Unaffected:
0:2.44-11.el8_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.2 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:2.44-11.el8_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:2.44-11.el8_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:2.44-11.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service |
Unaffected:
0:2.44-11.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions |
Unaffected:
0:2.44-11.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:2.44-11.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:2.44-11.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:2.46-9.1.el9_7 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:2.46-9.el9_0.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:2.46-9.el9_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:2.46-9.el9_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:2.46-9.el9_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
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GHSA-24WV-MV5M-XV4H
Vulnerability from github – Published: 2023-03-26 21:30 – Updated: 2024-10-25 21:45
VLAI
Summary
redis-py Race Condition vulnerability
Details
redis-py before 4.5.3, as used in ChatGPT and other products, leaves a connection open after canceling an async Redis command at an inopportune time (in the case of a pipeline operation), and can send response data to the client of an unrelated request in an off-by-one manner. The fixed versions for this CVE Record are 4.3.6, 4.4.3, and 4.5.3, but are believed to be incomplete. CVE-2023-28859 has been assigned the issues caused by the incomplete fixes.
Severity
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "redis"
},
"ranges": [
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"events": [
{
"introduced": "4.4.0"
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],
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}
]
},
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"name": "redis"
},
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},
{
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}
]
},
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},
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"events": [
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"introduced": "4.2.0"
},
{
"fixed": "4.3.6"
}
],
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}
]
}
],
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"CVE-2023-28858"
],
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],
"github_reviewed": true,
"github_reviewed_at": "2023-03-27T21:31:45Z",
"nvd_published_at": "2023-03-26T19:15:00Z",
"severity": "MODERATE"
},
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"id": "GHSA-24wv-mv5m-xv4h",
"modified": "2024-10-25T21:45:26Z",
"published": "2023-03-26T21:30:23Z",
"references": [
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"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28858"
},
{
"type": "WEB",
"url": "https://github.com/redis/redis-py/issues/2624"
},
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},
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{
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},
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},
{
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},
{
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"url": "https://openai.com/blog/march-20-chatgpt-outage"
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"schema_version": "1.4.0",
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"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "redis-py Race Condition vulnerability"
}
GHSA-25CM-2563-466G
Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-20 15:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
When an sk_msg scatterlist ring wraps (sg.end < sg.start), tls_push_record() chains the tail portion of the ring to the head using sg_chain(). An extra entry in the sg array is reserved for this:
struct sk_msg_sg { [...] / The extra two elements: * 1) used for chaining the front and sections when the list becomes * partitioned (e.g. end < start). The crypto APIs require the * chaining; * 2) to chain tailer SG entries after the message. / struct scatterlist data[MAX_MSG_FRAGS + 2];
The current code uses MAX_SKB_FRAGS + 1 as the ring size:
sg_chain(&msg_pl->sg.data[msg_pl->sg.start],
MAX_SKB_FRAGS - msg_pl->sg.start + 1,
msg_pl->sg.data);
This places the chain pointer at
sg_chain(data[start], (MAX_SKB_FRAGS - msg_start + 1) .. = &data[start] + (MAX_SKB_FRAGS - msg_start + 1) - 1 = data[start + (MAX_SKB_FRAGS - start + 1) - 1] = data[MAX_SKB_FRAGS]
instead of the true last entry. This is likely due to a "race" of the commit under Fixes landing close to commit 031097d9e079 ("bpf: sk_msg, zap ingress queue on psock down")
Convert to ARRAY_SIZE and drop the data[start] / - start (as suggested by Sabrina).
Severity
9.8 (Critical)
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"aliases": [
"CVE-2026-64047"
],
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"cwe_ids": [
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],
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"nvd_published_at": "2026-07-19T16:17:45Z",
"severity": "CRITICAL"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring\n\nWhen an sk_msg scatterlist ring wraps (sg.end \u003c sg.start),\ntls_push_record() chains the tail portion of the ring to the head\nusing sg_chain(). An extra entry in the sg array is reserved for\nthis:\n\n struct sk_msg_sg {\n [...]\n /* The extra two elements:\n * 1) used for chaining the front and sections when the list becomes\n * partitioned (e.g. end \u003c start). The crypto APIs require the\n * chaining;\n * 2) to chain tailer SG entries after the message.\n */\n struct scatterlist data[MAX_MSG_FRAGS + 2];\n\nThe current code uses MAX_SKB_FRAGS + 1 as the ring size:\n\n sg_chain(\u0026msg_pl-\u003esg.data[msg_pl-\u003esg.start],\n MAX_SKB_FRAGS - msg_pl-\u003esg.start + 1,\n msg_pl-\u003esg.data);\n\nThis places the chain pointer at\n\n sg_chain(data[start], (MAX_SKB_FRAGS - msg_start + 1) .. =\n \u0026data[start] + (MAX_SKB_FRAGS - msg_start + 1) - 1 =\n data[start + (MAX_SKB_FRAGS - start + 1) - 1] =\n data[MAX_SKB_FRAGS]\n\ninstead of the true last entry. This is likely due to a \"race\" of\nthe commit under Fixes landing close to\ncommit 031097d9e079 (\"bpf: sk_msg, zap ingress queue on psock down\")\n\nConvert to ARRAY_SIZE and drop the data[start] / - start (as suggested\nby Sabrina).",
"id": "GHSA-25cm-2563-466g",
"modified": "2026-07-20T15:31:57Z",
"published": "2026-07-19T18:31:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64047"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/131ef12057d92b77b636321b7849c69222405a97"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/285943c6e7ca309bbea84b253745154241d9788a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2fb0dc7e0099686c4e9d2732745d8a31b18c3628"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/47110c3a9ac247b688657337f5981efcfcb240dc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/66339b71f105e6f83e0da3b9583d95077534fe1d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/73963a375885d5ccb7def39fd0b4f542e0f343dd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/84158c2997159df4a0d70cd9c46774512d32a522"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eca989eab4b2599dcb02f72140a7c08f08838520"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-294M-6544-VPRQ
Vulnerability from github – Published: 2024-05-03 15:30 – Updated: 2024-06-03 18:53
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
of: fdt: fix off-by-one error in unflatten_dt_nodes()
Commit 78c44d910d3e ("drivers/of: Fix depth when unflattening devicetree") forgot to fix up the depth check in the loop body in unflatten_dt_nodes() which makes it possible to overflow the nps[] buffer...
Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-48672"
],
"database_specific": {
"cwe_ids": [
"CWE-193"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T15:15:07Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: fdt: fix off-by-one error in unflatten_dt_nodes()\n\nCommit 78c44d910d3e (\"drivers/of: Fix depth when unflattening devicetree\")\nforgot to fix up the depth check in the loop body in unflatten_dt_nodes()\nwhich makes it possible to overflow the nps[] buffer...\n\nFound by Linux Verification Center (linuxtesting.org) with the SVACE static\nanalysis tool.",
"id": "GHSA-294m-6544-vprq",
"modified": "2024-06-03T18:53:45Z",
"published": "2024-05-03T15:30:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48672"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2133f451311671c7c42b5640d2b999326b39aa0e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2566706ac6393386a4e7c4ce23fe17f4c98d9aa0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f945a792f67815abca26fa8a5e863ccf3fa1181"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba6b9f7cc1108bad6e2c53b1d6e0156379188db7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cbdda20ce363356698835185801a58a28f644853"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e0e88c25f88b9805572263c9ed20f1d88742feaf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ee4369260e77821602102dcc7d792de39a56365c"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2CJ9-WJMR-5W57
Vulnerability from github – Published: 2024-03-11 15:31 – Updated: 2025-04-12 00:30
VLAI
Details
An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number of interfaces exceeds the size of the names array. This issue can be reproduced by sending specially crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack by causing the libvirt daemon to crash.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-1441"
],
"database_specific": {
"cwe_ids": [
"CWE-193"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-11T14:15:06Z",
"severity": "MODERATE"
},
"details": "An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack by causing the libvirt daemon to crash.",
"id": "GHSA-2cj9-wjmr-5w57",
"modified": "2025-04-12T00:30:26Z",
"published": "2024-03-11T15:31:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1441"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:2560"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-1441"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2263841"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/45FFKU3LODT345LAB5T4XZA5WKYMXJYU"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E6MVZO5GXDB7RHY6MS3ZXES3HPK34P3A"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250411-0003"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2H29-RJH5-XXCH
Vulnerability from github – Published: 2022-05-13 01:13 – Updated: 2022-05-13 01:13
VLAI
Details
QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2015-8701"
],
"database_specific": {
"cwe_ids": [
"CWE-193"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-12-29T22:59:00Z",
"severity": "MODERATE"
},
"details": "QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in \u0027tx_consume\u0027 routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.",
"id": "GHSA-2h29-rjh5-xxch",
"modified": "2022-05-13T01:13:40Z",
"published": "2022-05-13T01:13:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-8701"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1286971"
},
{
"type": "WEB",
"url": "https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201602-01"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2015/12/28/6"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2015/12/29/1"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/79706"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2HFR-22WV-H4VJ
Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-06-24 18:32
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
ceph: fix num_ops off-by-one when crypto allocation fails
move_dirty_folio_in_page_array() may fail if the file is encrypted, the dirty folio is not the first in the batch, and it fails to allocate a bounce buffer to hold the ciphertext. When that happens, ceph_process_folio_batch() simply redirties the folio and flushes the current batch -- it can retry that folio in a future batch.
However, if this failed folio is not contiguous with the last folio that
did make it into the batch, then ceph_process_folio_batch() has already
incremented ceph_wbc->num_ops; because it doesn't follow through and
add the discontiguous folio to the array, ceph_submit_write() -- which
expects that ceph_wbc->num_ops accurately reflects the number of
contiguous ranges (and therefore the required number of "write extent"
ops) in the writeback -- will panic the kernel:
BUG_ON(ceph_wbc->op_idx + 1 != req->r_num_ops);
This issue can be reproduced on affected kernels by writing to fscrypt-enabled CephFS file(s) with a 4KiB-written/4KiB-skipped/repeat pattern (total filesize should not matter) and gradually increasing the system's memory pressure until a bounce buffer allocation fails.
Fix this crash by decrementing ceph_wbc->num_ops back to the correct
value when move_dirty_folio_in_page_array() fails, but the folio already
started counting a new (i.e. still-empty) extent.
The defect corrected by this patch has existed since 2022 (see first
Fixes:), but another bug blocked multi-folio encrypted writeback until
recently (see second Fixes:). The second commit made it into 6.18.16,
6.19.6, and 7.0-rc1, unmasking the panic in those versions. This patch
therefore fixes a regression (panic) introduced by cac190c7674f.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-46066"
],
"database_specific": {
"cwe_ids": [
"CWE-193"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-27T14:17:27Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix num_ops off-by-one when crypto allocation fails\n\nmove_dirty_folio_in_page_array() may fail if the file is encrypted, the\ndirty folio is not the first in the batch, and it fails to allocate a\nbounce buffer to hold the ciphertext. When that happens,\nceph_process_folio_batch() simply redirties the folio and flushes the\ncurrent batch -- it can retry that folio in a future batch.\n\nHowever, if this failed folio is not contiguous with the last folio that\ndid make it into the batch, then ceph_process_folio_batch() has already\nincremented `ceph_wbc-\u003enum_ops`; because it doesn\u0027t follow through and\nadd the discontiguous folio to the array, ceph_submit_write() -- which\nexpects that `ceph_wbc-\u003enum_ops` accurately reflects the number of\ncontiguous ranges (and therefore the required number of \"write extent\"\nops) in the writeback -- will panic the kernel:\n\n BUG_ON(ceph_wbc-\u003eop_idx + 1 != req-\u003er_num_ops);\n\nThis issue can be reproduced on affected kernels by writing to\nfscrypt-enabled CephFS file(s) with a 4KiB-written/4KiB-skipped/repeat\npattern (total filesize should not matter) and gradually increasing the\nsystem\u0027s memory pressure until a bounce buffer allocation fails.\n\nFix this crash by decrementing `ceph_wbc-\u003enum_ops` back to the correct\nvalue when move_dirty_folio_in_page_array() fails, but the folio already\nstarted counting a new (i.e. still-empty) extent.\n\nThe defect corrected by this patch has existed since 2022 (see first\n`Fixes:`), but another bug blocked multi-folio encrypted writeback until\nrecently (see second `Fixes:`). The second commit made it into 6.18.16,\n6.19.6, and 7.0-rc1, unmasking the panic in those versions. This patch\ntherefore fixes a regression (panic) introduced by cac190c7674f.",
"id": "GHSA-2hfr-22wv-h4vj",
"modified": "2026-06-24T18:32:29Z",
"published": "2026-05-27T15:33:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46066"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6200f41d6fcf2ac7e24866431e381cbc914560e4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a0d9555bf9eaeba34fe6b6bb86f442fe08ba3842"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba12c1e578890f6337a415b7dedf476c6d455105"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2V9G-P8FQ-VVH2
Vulnerability from github – Published: 2022-02-19 00:01 – Updated: 2022-03-17 00:05
VLAI
Details
An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2021-3930"
],
"database_specific": {
"cwe_ids": [
"CWE-193"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-18T18:15:00Z",
"severity": "MODERATE"
},
"details": "An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the \u0027page\u0027 argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.",
"id": "GHSA-2v9g-p8fq-vvh2",
"modified": "2022-03-17T00:05:29Z",
"published": "2022-02-19T00:01:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3930"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020588"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-27"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220225-0007"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Implementation
When copying character arrays or using character manipulation methods, the correct size parameter must be used to account for the null terminator that needs to be added at the end of the array. Some examples of functions susceptible to this weakness in C include strcpy(), strncpy(), strcat(), strncat(), printf(), sprintf(), scanf() and sscanf().
No CAPEC attack patterns related to this CWE.