GHSA-w775-9978-cp8r

GHSA-w775-9978-cp8r PUBLISHED CVSS 7.800000190734863 HIGH

Record from GitHub Advisory Database · Published September 15, 2025

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when handling missing device in read_one_chunk Store the error code before freeing the extent_map. Though it's reference counted structure, in that function it's the first and last allocation so this would lead to a potential use-after-free. The error can happen eg. when chunk is stored on a missing device and the degraded mount option is missing. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721

Risk scores

CVSS 3.1

7.800000190734863

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Timeline

Sep 15, 2025 CVE Published
Apr 10, 2026 Security Advisory

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