CVE-2022-50549 — Improper Locking in Linux

CWE-667 — Improper LockingCWE-833 — Deadlock6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 98.53%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedOct 7
Latest updateApr 20

Description

In the Linux kernel, the following vulnerability has been resolved: dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata Following concurrent processes: P1(drop cache) P2(kworker) drop_caches_sysctl_handler drop_slab shrink_slab down_read(&shrinker_rwsem) - LOCK A do_shrink_slab super_cache_scan prune_icache_sb dispose_list evict ext4_evict_inode ext4_clear_inode ext4_discard_preallocations ext4_mb_load_buddy_gfp ext4_mb_init_cache ext4_read_block_bitmap_nowait ext4_read_…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel3.6 — 5.4.229+4
▶Debianlinux/linux_kernel< 5.10.178-1+3
▶CVEListV5linux/linuxe49e582965b3694f07a106adc83ddb44aa4f0890 — 200aa33b5d781e7c0fa6c0c7db9dbcc3f574ce8f+6
▶debiandebian/linux< linux 6.1.4-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

3
VulDB
Linux Kernel up to 6.1.3 shrink_slab allocation of resources (EUVD-2025-32017 / Nessus ID 302981)↗2026-04-20
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OSV
CVE-2022-50549: In the Linux kernel, the following vulnerability has been resolved: dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata Followin↗2025-10-07
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GHSA
GHSA-2rmr-vqgp-f8jv: In the Linux kernel, the following vulnerability has been resolved: dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata Follow↗2025-10-07
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📋Vendor Advisories

2
Red Hat
kernel: dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata↗2025-10-07
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Debian
CVE-2022-50549: linux - In the Linux kernel, the following vulnerability has been resolved: dm thin: Fi...↗2022
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