CVE - CVE-2024-26832

CVE-ID
CVE-2024-26832	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: mm: zswap: fix missing folio cleanup in writeback race path In zswap_writeback_entry(), after we get a folio from __read_swap_cache_async(), we grab the tree lock again to check that the swap entry was not invalidated and recycled. If it was, we delete the folio we just added to the swap cache and exit. However, __read_swap_cache_async() returns the folio locked when it is newly allocated, which is always true for this path, and the folio is ref'd. Make sure to unlock and put the folio before returning. This was discovered by code inspection, probably because this path handles a race condition that should not happen often, and the bug would not crash the system, it will only strand the folio indefinitely.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/14f1992430ef9e647b02aa8ca12c5bcb9a1dffea URL:https://git.kernel.org/stable/c/14f1992430ef9e647b02aa8ca12c5bcb9a1dffea MISC:https://git.kernel.org/stable/c/6156277d1b26cb3fdb6fcbf0686ab78268571644 URL:https://git.kernel.org/stable/c/6156277d1b26cb3fdb6fcbf0686ab78268571644 MISC:https://git.kernel.org/stable/c/e2891c763aa2cff74dd6b5e978411ccf0cf94abe URL:https://git.kernel.org/stable/c/e2891c763aa2cff74dd6b5e978411ccf0cf94abe MISC:https://git.kernel.org/stable/c/e3b63e966cac0bf78aaa1efede1827a252815a1d URL:https://git.kernel.org/stable/c/e3b63e966cac0bf78aaa1efede1827a252815a1d
Assigning CNA
kernel.org
Date Record Created
20240219	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240219)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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