CVE-2023-53391
Published: September 19, 2025Last modified: September 19, 2025
Description
In the Linux kernel, the following vulnerability has been resolved: shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs As the ramfs-based tmpfs uses ramfs_init_fs_context() for the init_fs_context method, which allocates fc->s_fs_info, use ramfs_kill_sb() to free it and avoid a memory leak.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.42-r0) |
| 25 LTS | linux-lts | Not affected (6.6.89-r0) | |
| Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/1f34bf8b442c6d720e7fa6f15e8702427e48aea9
- https://git.kernel.org/stable/c/36ce9d76b0a93bae799e27e4f5ac35478c676592
- https://git.kernel.org/stable/c/487f229efea80c00dd7397547ec4f25fb8999d99
- https://git.kernel.org/stable/c/5fada375113767b3b57f1b04f7a4fe64ffaa626f
- https://git.kernel.org/stable/c/ebe07db840992a3886694ac3d303b06f4b70ce00