CVE-2023-53494
Published: October 2, 2025Last modified: October 2, 2025
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: xts - Handle EBUSY correctly As it is xts only handles the special return value of EINPROGRESS, which means that in all other cases it will free data related to the request. However, as the caller of xts may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.
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 | Not affected (6.1.33-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/51c082514c2dedf2711c99d93c196cc4eedceb40
- https://git.kernel.org/stable/c/57c3e1d63b63dc0841d41df729297cd7c1c35808
- https://git.kernel.org/stable/c/912eb10b65646ffd222256c78a1c566a3dac177d
- https://git.kernel.org/stable/c/92a07ba4f0af2cccdc2aa5ee32679c9c9714db90
- https://git.kernel.org/stable/c/d5870848879291700fe6c5257dcb48aadd10425c