PT-2025-8762 · Linux+4 · Linux Kernel+4
Published
2025-01-13
·
Updated
2026-05-26
·
CVE-2024-57975
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to the version that includes the fix for the issue described.
Description
A bug in the Linux kernel's btrfs module can cause a crash when the
run delalloc nocow() function fails, leading to a VM BUG ON FOLIO() error. This issue is related to the error handling of run delalloc nocow() and the clearing of folio dirty flags. The problem occurs when a preallocated extent is not properly handled, resulting in an attempt to mark folios as writeback while they are unlocked.Recommendations
To resolve this issue, apply the fix that introduces a helper function to clear folio dirty flags and start/end writeback, and ensure that the
run delalloc nocow() function properly handles errors and clears folio dirty flags.
As a temporary workaround, consider disabling the btrfs module until a patch is available.Exploit
Fix
Insufficient Verification of Data Authenticity
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Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Ubuntu