CVE-2024-42314
Published: August 22, 2024Last modified: August 22, 2024
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when adding pages to compressed bio At add_ra_bio_pages() we are accessing the extent map to calculate 'add_size' after we dropped our reference on the extent map, resulting in a use-after-free. Fix this by computing 'add_size' before dropping our extent map reference.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.110-r0) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.12.41-r0) |
References
- https://git.kernel.org/stable/c/8e7860543a94784d744c7ce34b78a2e11beefa5c
- https://git.kernel.org/stable/c/b7859ff398b6b656e1689daa860eb34837b4bb89
- https://git.kernel.org/stable/c/c1cc3326e27b0bd7a2806b40bc48e49afaf951e7
- https://git.kernel.org/stable/c/c205565e0f2f439f278a4a94ee97b67ef7b56ae8
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html