HIGH 7.1 Microsoft
CVE-2025-22121
ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
Microsoft Security Update 2026-Aug: ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
Affected Products
- azl3 kernel 6.6.104.2-4 on Azure Linux 3.0
- azl3 kernel 6.6.112.1-2 on Azure Linux 3.0
- azl3 kernel 6.6.117.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.119.3-1 on Azure Linux 3.0
- cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0
- cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.96.2-1 on Azure Linux 3.0
- azl3 kernel 6.6.96.2-2 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-22121
- https://nvd.nist.gov/vuln/detail/CVE-2025-22121
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-06 via Microsoft. Affected: azl3 kernel 6.6.104.2-4 on Azure Linux 3.0, azl3 kernel 6.6.112.1-2 on Azure Linux 3.0, azl3 kernel 6.6.117.1-1 on Azure Linux 3.0 and 5 more.
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