CVE-2025-68820
In the Linux kernel, the following vulnerability has been resolved: ext4: xattr: fix null pointer deref in ext4_raw_inode() If ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED), iloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all() lacks error checking, this will lead to a null pointer dereference in ext4_raw_inode(), called right after ext4_get_inode_loc(). Found by Linux Verification Center (linuxtesting.org) with SVACE.
Affected versions
Linux kernel versions
5.10.237,
5.15.181,
6.1.135,
6.6.88,
6.12.24,
5.4.293,
6.13.12,
6.14.3,
6.15
and later are affected. Fixed in
5.10.248,
5.15.198,
6.1.160,
6.6.120,
6.12.64,
6.18.3,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2025-68820 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/190ad0f22ba49f1101182b80e3af50ca2ddfe72f
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PatchKernel patch commithttps://git.kernel.org/stable/c/3d8d22e75f7edfa0b30ff27330fd6a1285d594c3
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PatchKernel patch commithttps://git.kernel.org/stable/c/5b154e901fda2e98570b8f426a481f5740097dc2
Frequently asked questions
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What is CVE-2025-68820?
CVE-2025-68820 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.10.237 onward and has been patched in 5.10.248, 5.15.198, 6.1.160 and others. CVE-2025-68820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68820?
Yes — CVE-2025-68820 has been patched. Fixed versions include 5.10.248, 5.15.198, 6.1.160 and others. If you are running Linux kernel 5.10.237 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68820 actively exploited?
No — CVE-2025-68820 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.