HIGH 7.8 Microsoft
CVE-2024-50217
btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()
Microsoft Security Update 2026-Aug: btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()
Affected Products
- cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0
- azl3 kernel 6.6.96.2-1 on Azure Linux 3.0
- 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 6.6.119.3-3 on Azure Linux 3.0
- azl3 kernel 6.6.126.1-1 on Azure Linux 3.0
- azl3 kernel 6.6.134.1-2 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-50217
- https://nvd.nist.gov/vuln/detail/CVE-2024-50217
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-08-06 via Microsoft. Affected: cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0, azl3 kernel 6.6.96.2-1 on Azure Linux 3.0, azl3 kernel 6.6.104.2-4 on Azure Linux 3.0 and 5 more.
vulnfeed aggregates 8893 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.