CVE-2022-50300
btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 15, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
adfb69af7d8cb6a3958f75aad1ef4bc96891d116 < b8e7ed42bc3ca0d0e4191ee394d34962d3624c22 adfb69af7d8cb6a3958f75aad1ef4bc96891d116 < fce3713197ebba239e1c7e02174ed216ea1ee014 adfb69af7d8cb6a3958f75aad1ef4bc96891d116 < 169a4cf46882974d4db6d85eb623ec898e51bbc0 adfb69af7d8cb6a3958f75aad1ef4bc96891d116 < 1742e1c90c3da344f3bb9b1f1309b3f47482756a
Linux / Linux
4.15
References
git.kernel.org: https://git.kernel.org/stable/c/b8e7ed42bc3ca0d0e4191ee394d34962d3624c22 git.kernel.org: https://git.kernel.org/stable/c/fce3713197ebba239e1c7e02174ed216ea1ee014 git.kernel.org: https://git.kernel.org/stable/c/169a4cf46882974d4db6d85eb623ec898e51bbc0 git.kernel.org: https://git.kernel.org/stable/c/1742e1c90c3da344f3bb9b1f1309b3f47482756a