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EUVD-2026-344489

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:56

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:56:27.004520+00:00",
  "id": "EUVD-2026-344489"
}

CVE-2021-47458 (GCVE-0-2021-47458)

Vulnerability from cvelistv5 – Published: 2024-05-22 06:19 – Updated: 2026-08-05 08:47

Title

ocfs2: mount fails with buffer overflow in strlen

Summary

In the Linux kernel, the following vulnerability has been resolved: ocfs2: mount fails with buffer overflow in strlen Starting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an ocfs2 filesystem with either o2cb or pcmk cluster stack fails with the trace below. Problem seems to be that strings for cluster stack and cluster name are not guaranteed to be null terminated in the disk representation, while strlcpy assumes that the source string is always null terminated. This causes a read outside of the source string triggering the buffer overflow detection. detected buffer overflow in strlen ------------[ cut here ]------------ kernel BUG at lib/string.c:1149! invalid opcode: 0000 [#1] SMP PTI CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1 Debian 5.14.6-2 RIP: 0010:fortify_panic+0xf/0x11 ... Call Trace: ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2] ocfs2_fill_super+0x359/0x19b0 [ocfs2] mount_bdev+0x185/0x1b0 legacy_get_tree+0x27/0x40 vfs_get_tree+0x25/0xb0 path_mount+0x454/0xa20 __x64_sys_mount+0x103/0x140 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-10 18:55 UTC

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ac011cb3ff7a76b3e…
https://git.kernel.org/stable/c/4b74ddcc22ee64559…
https://git.kernel.org/stable/c/232ed9752510de443…
https://git.kernel.org/stable/c/7623b1035ca2d17bd…
https://git.kernel.org/stable/c/d3a83576378b4c904…
https://git.kernel.org/stable/c/93be0eeea14cf3923…
https://git.kernel.org/stable/c/0e677ea5b7396f715…
https://git.kernel.org/stable/c/b15fa9224e6e12394…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb (git) Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < 4b74ddcc22ee6455946e80a9c4808801f8f8561e (git) Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < 232ed9752510de4436468b653d145565669c8498 (git) Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < 7623b1035ca2d17bde0f6a086ad6844a34648df1 (git) Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < d3a83576378b4c904f711598dde2c5e881c4295c (git) Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < 93be0eeea14cf39235e585c8f56df3b3859deaad (git) Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < 0e677ea5b7396f715a76b6b0ef441430e4c4b57f (git) Affected: c74a3bdd9b529d924d1abf986079b783dd105ace , < b15fa9224e6e1239414525d8d556d824701849fc (git)
Linux	Linux	Affected: 3.14 Unaffected: 0 , < 3.14 (semver) Unaffected: 4.4.290 , ≤ 4.4.* (semver) Unaffected: 4.9.288 , ≤ 4.9.* (semver) Unaffected: 4.14.253 , ≤ 4.14.* (semver) Unaffected: 4.19.214 , ≤ 4.19.* (semver) Unaffected: 5.4.156 , ≤ 5.4.* (semver) Unaffected: 5.10.76 , ≤ 5.10.* (semver) Unaffected: 5.14.15 , ≤ 5.14.* (semver) Unaffected: 5.15 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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EUVD-2026-344489

CVE-2021-47458 (GCVE-0-2021-47458)

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Nomenclature

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