CVE-2023-53494

crypto: xts - Handle EBUSY correctly

State: Published
Severity: 7.8 High
Published: Oct 1, 2025
Updated: Aug 5, 2026
Reserved: Oct 1, 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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 92a07ba4f0af2cccdc2aa5ee32679c9c9714db90Affected 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 912eb10b65646ffd222256c78a1c566a3dac177dAffected 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 57c3e1d63b63dc0841d41df729297cd7c1c35808Affected 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before d5870848879291700fe6c5257dcb48aadd10425cAffected 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 51c082514c2dedf2711c99d93c196cc4eedceb40Affected
LinuxLinux	5.4Affected before 5.4Not affected 5.10.173 through 5.10.Not affected 5.15.99 through 5.15.Not affected 6.1.16 through 6.1.Not affected 6.2.3 through 6.2.Not affected 6.3 and laterNot affected

Product

Versions

LinuxLinux

8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 92a07ba4f0af2cccdc2aa5ee32679c9c9714db90Affected
8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 912eb10b65646ffd222256c78a1c566a3dac177dAffected
8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 57c3e1d63b63dc0841d41df729297cd7c1c35808Affected
8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before d5870848879291700fe6c5257dcb48aadd10425cAffected
8083b1bf8163e7ae7d8c90f221106d96450b8aa8 to before 51c082514c2dedf2711c99d93c196cc4eedceb40Affected

LinuxLinux

5.4Affected
before 5.4Not affected
5.10.173 through 5.10.*Not affected
5.15.99 through 5.15.*Not affected
6.1.16 through 6.1.*Not affected
6.2.3 through 6.2.*Not affected
6.3 and laterNot affected

References

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