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gsd-2021-47254
Vulnerability from gsd
Modified
2024-04-11 05:05
Details
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
Aliases
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CVE-2021-47254 (GCVE-0-2021-47254)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2025-05-21 08:31
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix use-after-free in gfs2_glock_shrink_scan
The GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to
remove the glock from the lru list in __gfs2_glock_put().
On the shrink scan path, the same flag is cleared under lru_lock but because
of cond_resched_lock(&lru_lock) in gfs2_dispose_glock_lru(), progress on the
put side can be made without deleting the glock from the lru list.
Keep GLF_LRU across the race window opened by cond_resched_lock(&lru_lock) to
ensure correct behavior on both sides - clear GLF_LRU after list_del under
lru_lock.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ► | Linux | Linux |
Version: 6948c6bc17d666663a84c124b3176039e64a58f4 Version: b568ed385a18c0ddbe41862b69088b636550a04f Version: 762bb3528249604bc680a9df635e8995740176de Version: bac8520892812dada1ac93f27d96317470d24b1f Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348 Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348 Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348 Version: 7881ef3f33bb80f459ea6020d1e021fc524a6348 Version: 1e7a416fb765c9072479dc424780c0937ba99270 Version: dcbdbe13796ffa561510d2686a6318564e728bbd |
|
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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