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.
Weakness type
CWE-476CVE-2025-68820 is a NULL Pointer Dereference vulnerability
What is NULL Pointer Dereference?
The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE
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
9 totalFrequently asked questions
-
What is CVE-2025-68820?
CVE-2025-68820 is a unscored severity Linux kernel vulnerability , classified as a NULL Pointer Dereference flaw (CWE-476) . 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.
-
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.
-
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.