CVE-2023-54042
Published: December 26, 2025Last modified: December 26, 2025
Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/64s: Fix VAS mm use after free The refcount on mm is dropped before the coprocessor is detached.
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 (6.1.42-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/421cd1544480f2458042fe7f4913a2069c4d7251
- https://git.kernel.org/stable/c/4e82f92c349ea603736ade1e814861c0182a55ad
- https://git.kernel.org/stable/c/b4bda59b47879cce38a6ec5a01cd3cac702b5331
- https://git.kernel.org/stable/c/db8657fdd53c5e3069149d7f957cb60e63027bb2
- https://git.kernel.org/stable/c/f7d92313002b2d543500cc417d8079aaed1fb0a8