CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6769 vulnerabilities reference this CWE, most recent first.
GHSA-4RRH-P933-RF74
Vulnerability from github – Published: 2026-04-03 18:31 – Updated: 2026-04-23 21:31In the Linux kernel, the following vulnerability has been resolved:
perf/x86: Move event pointer setup earlier in x86_pmu_enable()
A production AMD EPYC system crashed with a NULL pointer dereference in the PMU NMI handler:
BUG: kernel NULL pointer dereference, address: 0000000000000198 RIP: x86_perf_event_update+0xc/0xa0 Call Trace: amd_pmu_v2_handle_irq+0x1a6/0x390 perf_event_nmi_handler+0x24/0x40
The faulting instruction is cmpq $0x0, 0x198(%rdi) with RDI=0,
corresponding to the if (unlikely(!hwc->event_base)) check in
x86_perf_event_update() where hwc = &event->hw and event is NULL.
drgn inspection of the vmcore on CPU 106 showed a mismatch between cpuc->active_mask and cpuc->events[]:
active_mask: 0x1e (bits 1, 2, 3, 4) events[1]: 0xff1100136cbd4f38 (valid) events[2]: 0x0 (NULL, but active_mask bit 2 set) events[3]: 0xff1100076fd2cf38 (valid) events[4]: 0xff1100079e990a90 (valid)
The event that should occupy events[2] was found in event_list[2] with hw.idx=2 and hw.state=0x0, confirming x86_pmu_start() had run (which clears hw.state and sets active_mask) but events[2] was never populated.
Another event (event_list[0]) had hw.state=0x7 (STOPPED|UPTODATE|ARCH), showing it was stopped when the PMU rescheduled events, confirming the throttle-then-reschedule sequence occurred.
The root cause is commit 7e772a93eb61 ("perf/x86: Fix NULL event access and potential PEBS record loss") which moved the cpuc->events[idx] assignment out of x86_pmu_start() and into step 2 of x86_pmu_enable(), after the PERF_HES_ARCH check. This broke any path that calls pmu->start() without going through x86_pmu_enable() -- specifically the unthrottle path:
perf_adjust_freq_unthr_events() -> perf_event_unthrottle_group() -> perf_event_unthrottle() -> event->pmu->start(event, 0) -> x86_pmu_start() // sets active_mask but not events[]
The race sequence is:
-
A group of perf events overflows, triggering group throttle via perf_event_throttle_group(). All events are stopped: active_mask bits cleared, events[] preserved (x86_pmu_stop no longer clears events[] after commit 7e772a93eb61).
-
While still throttled (PERF_HES_STOPPED), x86_pmu_enable() runs due to other scheduling activity. Stopped events that need to move counters get PERF_HES_ARCH set and events[old_idx] cleared. In step 2 of x86_pmu_enable(), PERF_HES_ARCH causes these events to be skipped -- events[new_idx] is never set.
-
The timer tick unthrottles the group via pmu->start(). Since commit 7e772a93eb61 removed the events[] assignment from x86_pmu_start(), active_mask[new_idx] is set but events[new_idx] remains NULL.
-
A PMC overflow NMI fires. The handler iterates active counters, finds active_mask[2] set, reads events[2] which is NULL, and crashes dereferencing it.
Move the cpuc->events[hwc->idx] assignment in x86_pmu_enable() to before the PERF_HES_ARCH check, so that events[] is populated even for events that are not immediately started. This ensures the unthrottle path via pmu->start() always finds a valid event pointer.
{
"affected": [],
"aliases": [
"CVE-2026-23435"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-03T16:16:25Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86: Move event pointer setup earlier in x86_pmu_enable()\n\nA production AMD EPYC system crashed with a NULL pointer dereference\nin the PMU NMI handler:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000198\n RIP: x86_perf_event_update+0xc/0xa0\n Call Trace:\n \u003cNMI\u003e\n amd_pmu_v2_handle_irq+0x1a6/0x390\n perf_event_nmi_handler+0x24/0x40\n\nThe faulting instruction is `cmpq $0x0, 0x198(%rdi)` with RDI=0,\ncorresponding to the `if (unlikely(!hwc-\u003eevent_base))` check in\nx86_perf_event_update() where hwc = \u0026event-\u003ehw and event is NULL.\n\ndrgn inspection of the vmcore on CPU 106 showed a mismatch between\ncpuc-\u003eactive_mask and cpuc-\u003eevents[]:\n\n active_mask: 0x1e (bits 1, 2, 3, 4)\n events[1]: 0xff1100136cbd4f38 (valid)\n events[2]: 0x0 (NULL, but active_mask bit 2 set)\n events[3]: 0xff1100076fd2cf38 (valid)\n events[4]: 0xff1100079e990a90 (valid)\n\nThe event that should occupy events[2] was found in event_list[2]\nwith hw.idx=2 and hw.state=0x0, confirming x86_pmu_start() had run\n(which clears hw.state and sets active_mask) but events[2] was\nnever populated.\n\nAnother event (event_list[0]) had hw.state=0x7 (STOPPED|UPTODATE|ARCH),\nshowing it was stopped when the PMU rescheduled events, confirming the\nthrottle-then-reschedule sequence occurred.\n\nThe root cause is commit 7e772a93eb61 (\"perf/x86: Fix NULL event access\nand potential PEBS record loss\") which moved the cpuc-\u003eevents[idx]\nassignment out of x86_pmu_start() and into step 2 of x86_pmu_enable(),\nafter the PERF_HES_ARCH check. This broke any path that calls\npmu-\u003estart() without going through x86_pmu_enable() -- specifically\nthe unthrottle path:\n\n perf_adjust_freq_unthr_events()\n -\u003e perf_event_unthrottle_group()\n -\u003e perf_event_unthrottle()\n -\u003e event-\u003epmu-\u003estart(event, 0)\n -\u003e x86_pmu_start() // sets active_mask but not events[]\n\nThe race sequence is:\n\n 1. A group of perf events overflows, triggering group throttle via\n perf_event_throttle_group(). All events are stopped: active_mask\n bits cleared, events[] preserved (x86_pmu_stop no longer clears\n events[] after commit 7e772a93eb61).\n\n 2. While still throttled (PERF_HES_STOPPED), x86_pmu_enable() runs\n due to other scheduling activity. Stopped events that need to\n move counters get PERF_HES_ARCH set and events[old_idx] cleared.\n In step 2 of x86_pmu_enable(), PERF_HES_ARCH causes these events\n to be skipped -- events[new_idx] is never set.\n\n 3. The timer tick unthrottles the group via pmu-\u003estart(). Since\n commit 7e772a93eb61 removed the events[] assignment from\n x86_pmu_start(), active_mask[new_idx] is set but events[new_idx]\n remains NULL.\n\n 4. A PMC overflow NMI fires. The handler iterates active counters,\n finds active_mask[2] set, reads events[2] which is NULL, and\n crashes dereferencing it.\n\nMove the cpuc-\u003eevents[hwc-\u003eidx] assignment in x86_pmu_enable() to\nbefore the PERF_HES_ARCH check, so that events[] is populated even\nfor events that are not immediately started. This ensures the\nunthrottle path via pmu-\u003estart() always finds a valid event pointer.",
"id": "GHSA-4rrh-p933-rf74",
"modified": "2026-04-23T21:31:18Z",
"published": "2026-04-03T18:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23435"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/886fa869153917d902784098922defa20c3a2fe5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8d5fae6011260de209aaf231120e8146b14bc8e0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c1dd1e2b722d3f1f2e4977dad8d1be78fdfb30cb"
}
],
"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-4RVP-MWVG-9858
Vulnerability from github – Published: 2022-03-17 00:00 – Updated: 2022-03-17 00:00Adobe Premiere Elements 20210809.daily.2242976 (and earlier) is affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2021-40789"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-16T15:15:00Z",
"severity": "MODERATE"
},
"details": "Adobe Premiere Elements 20210809.daily.2242976 (and earlier) is affected by a Null pointer dereference vulnerability when parsing a specially crafted file. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-4rvp-mwvg-9858",
"modified": "2022-03-17T00:00:32Z",
"published": "2022-03-17T00:00:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40789"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/premiere_elements/apsb21-106.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4RVW-GF8W-HJ4X
Vulnerability from github – Published: 2022-05-14 01:19 – Updated: 2022-05-14 01:19Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file.
{
"affected": [],
"aliases": [
"CVE-2018-15858"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-08-25T21:29:00Z",
"severity": "MODERATE"
},
"details": "Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file.",
"id": "GHSA-4rvw-gf8w-hj4x",
"modified": "2022-05-14T01:19:06Z",
"published": "2022-05-14T01:19:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15858"
},
{
"type": "WEB",
"url": "https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f"
},
{
"type": "WEB",
"url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201810-05"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3786-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3786-2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4V2G-FXCQ-4J44
Vulnerability from github – Published: 2024-03-26 18:32 – Updated: 2024-11-04 18:31In the Linux kernel, the following vulnerability has been resolved:
iio: adc: ad7091r: Allow users to configure device events
AD7091R-5 devices are supported by the ad7091r-5 driver together with the ad7091r-base driver. Those drivers declared iio events for notifying user space when ADC readings fall bellow the thresholds of low limit registers or above the values set in high limit registers. However, to configure iio events and their thresholds, a set of callback functions must be implemented and those were not present until now. The consequence of trying to configure ad7091r-5 events without the proper callback functions was a null pointer dereference in the kernel because the pointers to the callback functions were not set.
Implement event configuration callbacks allowing users to read/write event thresholds and enable/disable event generation.
Since the event spec structs are generic to AD7091R devices, also move those from the ad7091r-5 driver the base driver so they can be reused when support for ad7091r-2/-4/-8 be added.
{
"affected": [],
"aliases": [
"CVE-2023-52627"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-26T18:15:09Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad7091r: Allow users to configure device events\n\nAD7091R-5 devices are supported by the ad7091r-5 driver together with\nthe ad7091r-base driver. Those drivers declared iio events for notifying\nuser space when ADC readings fall bellow the thresholds of low limit\nregisters or above the values set in high limit registers.\nHowever, to configure iio events and their thresholds, a set of callback\nfunctions must be implemented and those were not present until now.\nThe consequence of trying to configure ad7091r-5 events without the\nproper callback functions was a null pointer dereference in the kernel\nbecause the pointers to the callback functions were not set.\n\nImplement event configuration callbacks allowing users to read/write\nevent thresholds and enable/disable event generation.\n\nSince the event spec structs are generic to AD7091R devices, also move\nthose from the ad7091r-5 driver the base driver so they can be reused\nwhen support for ad7091r-2/-4/-8 be added.",
"id": "GHSA-4v2g-fxcq-4j44",
"modified": "2024-11-04T18:31:17Z",
"published": "2024-03-26T18:32:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52627"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/020e71c7ffc25dfe29ed9be6c2d39af7bd7f661f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/137568aa540a9f587c48ff7d4c51cdba08cfe9a4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1eba6f7ffa295a0eec098c107043074be7cc4ec5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/49f322ce1f265935f15e5512da69a399f27a5091"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/55aca2ce91a63740278502066beaddbd841af9c6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/89c4e63324e208a23098f7fb15c00487cecbfed2"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
}
],
"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-4V5P-WG3C-R4X4
Vulnerability from github – Published: 2022-05-14 01:01 – Updated: 2022-05-14 01:01The Goodix GT9xx touchscreen driver for custom Linux kernels on Xiaomi daisy-o-oss and daisy-p-oss as used in Mi A2 Lite and RedMi6 pro devices through 2018-08-27 has a NULL pointer dereference in kfree after a kmalloc failure in gtp_read_Color in drivers/input/touchscreen/gt917d/gt9xx.c.
{
"affected": [],
"aliases": [
"CVE-2018-19939"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-12-07T09:29:00Z",
"severity": "HIGH"
},
"details": "The Goodix GT9xx touchscreen driver for custom Linux kernels on Xiaomi daisy-o-oss and daisy-p-oss as used in Mi A2 Lite and RedMi6 pro devices through 2018-08-27 has a NULL pointer dereference in kfree after a kmalloc failure in gtp_read_Color in drivers/input/touchscreen/gt917d/gt9xx.c.",
"id": "GHSA-4v5p-wg3c-r4x4",
"modified": "2022-05-14T01:01:19Z",
"published": "2022-05-14T01:01:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-19939"
},
{
"type": "WEB",
"url": "https://github.com/MiCode/Xiaomi_Kernel_OpenSource/issues/972"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4V5V-52WM-9X72
Vulnerability from github – Published: 2025-09-11 18:35 – Updated: 2025-11-26 18:31In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: add null check
[WHY] Prevents null pointer dereferences to enhance function robustness
[HOW] Adds early null check and return false if invalid.
{
"affected": [],
"aliases": [
"CVE-2025-39762"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-11T17:15:40Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: add null check\n\n[WHY]\nPrevents null pointer dereferences to enhance function robustness\n\n[HOW]\nAdds early null check and return false if invalid.",
"id": "GHSA-4v5v-52wm-9x72",
"modified": "2025-11-26T18:31:02Z",
"published": "2025-09-11T18:35:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39762"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/10d97cc1a14ef1f611e156b0b27e8b226e103cc2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13895744e2c639324cf3cb18f2ba4e3f400dd0dd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/158b9201c17fc93ed4253c2f03b77fd2671669a1"
}
],
"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-4V63-9RGJ-4J4X
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-03-11 18:32InDesign Desktop versions ID20.1, ID19.5.2 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2025-27176"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T18:15:35Z",
"severity": "MODERATE"
},
"details": "InDesign Desktop versions ID20.1, ID19.5.2 and earlier are affected by a NULL Pointer Dereference vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-4v63-9rgj-4j4x",
"modified": "2025-03-11T18:32:21Z",
"published": "2025-03-11T18:32:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27176"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/indesign/apsb25-19.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4V8V-PR95-RHX7
Vulnerability from github – Published: 2022-11-29 00:30 – Updated: 2025-04-14 18:31A NULL pointer dereference issue was discovered in the Linux kernel in the MPTCP protocol when traversing the subflow list at disconnect time. A local user could use this flaw to potentially crash the system causing a denial of service.
{
"affected": [],
"aliases": [
"CVE-2022-4128"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-28T22:15:00Z",
"severity": "MODERATE"
},
"details": "A NULL pointer dereference issue was discovered in the Linux kernel in the MPTCP protocol when traversing the subflow list at disconnect time. A local user could use this flaw to potentially crash the system causing a denial of service.",
"id": "GHSA-4v8v-pr95-rhx7",
"modified": "2025-04-14T18:31:41Z",
"published": "2022-11-29T00:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4128"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/5c835bb142d4"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/netdev/20220708233610.410786-2-mathew.j.martineau%40linux.intel.com"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/netdev/20220708233610.410786-2-mathew.j.martineau@linux.intel.com"
}
],
"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-4VFF-8C4J-M2J6
Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-10 21:30In the Linux kernel, the following vulnerability has been resolved:
btrfs: zoned: initialize device's zone info for seeding
When performing seeding on a zoned filesystem it is necessary to initialize each zoned device's btrfs_zoned_device_info structure, otherwise mounting the filesystem will cause a NULL pointer dereference.
This was uncovered by fstests' testcase btrfs/163.
{
"affected": [],
"aliases": [
"CVE-2022-49831"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-01T15:16:06Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: initialize device\u0027s zone info for seeding\n\nWhen performing seeding on a zoned filesystem it is necessary to\ninitialize each zoned device\u0027s btrfs_zoned_device_info structure,\notherwise mounting the filesystem will cause a NULL pointer dereference.\n\nThis was uncovered by fstests\u0027 testcase btrfs/163.",
"id": "GHSA-4vff-8c4j-m2j6",
"modified": "2025-11-10T21:30:28Z",
"published": "2025-05-01T15:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49831"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/544f38a738343d7e75f104e5e9d1ade58d8b71bd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/91c38504e589dadbcde47b1cacdfc5b684154d44"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a8d1b1647bf8244a5f270538e9e636e2657fffa3"
}
],
"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-4VGM-5R69-WVP8
Vulnerability from github – Published: 2022-05-13 01:11 – Updated: 2022-05-13 01:11The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.
{
"affected": [],
"aliases": [
"CVE-2013-1416"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2013-04-19T11:44:00Z",
"severity": "MODERATE"
},
"details": "The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.",
"id": "GHSA-4vgm-5r69-wvp8",
"modified": "2022-05-13T01:11:49Z",
"published": "2022-05-13T01:11:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2013-1416"
},
{
"type": "WEB",
"url": "https://github.com/krb5/krb5/commit/8ee70ec63931d1e38567905387ab9b1d45734d81"
},
{
"type": "WEB",
"url": "http://krbdev.mit.edu/rt/Ticket/Display.html?id=7600"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102058.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102074.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2013-05/msg00011.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2013-06/msg00041.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2013-06/msg00102.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2013-0748.html"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:157"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:158"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation MIT-56
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Select a programming language that is not susceptible to these issues.
Mitigation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.