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GSD-2023-52699
Vulnerability from gsd - Updated: 2024-03-08 06:01Details
** 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-2023-52699 (GCVE-0-2023-52699)
Vulnerability from cvelistv5 – Published: 2024-05-19 10:10 – Updated: 2026-01-05 10:16
VLAI?
EPSS
Title
sysv: don't call sb_bread() with pointers_lock held
Summary
In the Linux kernel, the following vulnerability has been resolved:
sysv: don't call sb_bread() with pointers_lock held
syzbot is reporting sleep in atomic context in SysV filesystem [1], for
sb_bread() is called with rw_spinlock held.
A "write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock" bug
and a "sb_bread() with write_lock(&pointers_lock)" bug were introduced by
"Replace BKL for chain locking with sysvfs-private rwlock" in Linux 2.5.12.
Then, "[PATCH] err1-40: sysvfs locking fix" in Linux 2.6.8 fixed the
former bug by moving pointers_lock lock to the callers, but instead
introduced a "sb_bread() with read_lock(&pointers_lock)" bug (which made
this problem easier to hit).
Al Viro suggested that why not to do like get_branch()/get_block()/
find_shared() in Minix filesystem does. And doing like that is almost a
revert of "[PATCH] err1-40: sysvfs locking fix" except that get_branch()
from with find_shared() is called without write_lock(&pointers_lock).
Severity ?
5.3 (Medium)
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 13b33feb2ebddc2b1aa607f553566b18a4af1d76
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1b4fe801b5bedec2b622ddb18e5c9bf26c63d79f (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 674c1c4229e743070e09db63a23442950ff000d1 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fd203d2c671bdee9ab77090ff394d3b71b627927 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 53cb1e52c9db618c08335984d1ca80db220ccf09 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 89e8524135a3902e7563a5a59b7b5ec1bf4904ac (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a69224223746ab96d43e5db9d22d136827b7e2d3 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f123dc86388cb669c3d6322702dc441abc35c31e (git) |
|||||||
|
|||||||||
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Sightings
| Author | Source | Type | Date |
|---|
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.
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