CVE-2024-26832
MediumIn 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.
CVSS 3.1 score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-459CVE-2024-26832 is classified as CWE-459
See CWE-459 on MITRE CWE for full details on this weakness type.
References
The following references provide additional information about CVE-2024-26832 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/14f1992430ef9e647b02aa8ca12c5bcb9a1dffea
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PatchKernel patch commithttps://git.kernel.org/stable/c/6156277d1b26cb3fdb6fcbf0686ab78268571644
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PatchKernel patch commithttps://git.kernel.org/stable/c/e2891c763aa2cff74dd6b5e978411ccf0cf94abe
Frequently asked questions
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What is CVE-2024-26832?
CVE-2024-26832 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2024-26832 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2024-26832?
CVE-2024-26832 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2024-26832?
No patch is currently available for CVE-2024-26832. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2024-26832 actively exploited?
No — CVE-2024-26832 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.