CVE-2023-53149 — Improper Locking in Linux

CWE-667 — Improper LockingCWE-833 — Deadlock6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
LinuxLinux KernelDebian Linux+3 more
Timeline
PublishedSep 15

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid deadlock in fs reclaim with page writeback Ext4 has a filesystem wide lock protecting ext4_writepages() calls to avoid races with switching of journalled data flag or inode format. This lock can however cause a deadlock like: CPU0 CPU1 ext4_writepages() percpu_down_read(sbi->s_writepages_rwsem); ext4_change_inode_journal_flag() percpu_down_write(sbi->s_writepages_rwsem); - blocks, all readers block from now on ex…

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 Packages7 packages

▶NVDlinux/linux_kernel4.7 — 6.2.16+2
▶Debianlinux/linux_kernel< 6.3.7-1+1
▶CVEListV5linux/linuxc8585c6fcaf2011de54c3592e80a634a2b9e1a7f — 2ec97dc90df40c50e509809dc9a198638a7e18b6+3
▶debiandebian/linux< linux 6.3.7-1 (forky)

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-3gfc-6fjv-pj6m: In the Linux kernel, the following vulnerability has been resolved: ext4: avoid deadlock in fs reclaim with page writeback Ext4 has a filesystem wid↗2025-09-15
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OSV
CVE-2023-53149: In the Linux kernel, the following vulnerability has been resolved: ext4: avoid deadlock in fs reclaim with page writeback Ext4 has a filesystem wide↗2025-09-15
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📋Vendor Advisories

3
Red Hat
kernel: ext4: avoid deadlock in fs reclaim with page writeback↗2025-09-15
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Microsoft
ext4: avoid deadlock in fs reclaim with page writeback↗2025-09-09
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Debian
CVE-2023-53149: linux - In the Linux kernel, the following vulnerability has been resolved: ext4: avoid...↗2023
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CVE-2023-53149 — Improper Locking in Linux | cvebase