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Vulnerability record · CVE-2023-53494 · published 1 October 2025

CVE-2023-53494: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.16% · top 95.5% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
4 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/51c082514c2dedf2711c99d93c196cc4eedceb40 Patch
https://git.kernel.org/stable/c/57c3e1d63b63dc0841d41df729297cd7c1c35808 Patch
https://git.kernel.org/stable/c/912eb10b65646ffd222256c78a1c566a3dac177d Patch
https://git.kernel.org/stable/c/92a07ba4f0af2cccdc2aa5ee32679c9c9714db90 Patch
https://git.kernel.org/stable/c/d5870848879291700fe6c5257dcb48aadd10425c Patch

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Source: NIST National Vulnerability Database (record CVE-2023-53494), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.