PT-2026-61121 · Linux · Linux Kernel

CVE-2026-63805 · Published 2026-07-19 · Updated 2026-07-20

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the crypto nx component where nx crypto ctx shash exit calls nx crypto ctx exit using an incorrect argument type. Specifically, crypto shash ctx() provides a nx crypto ctx * instead of the expected crypto tfm *. This type mismatch can lead to a kernel data access fault, resulting in a system oops. A similar issue is present in nx crypto ctx skcipher exit regarding the context it receives.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-63805

Affected Products

Linux Kernel

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-63805 · Security Note
• https://twitter.com/VulmonFeeds/status/2078907395288293482 · Twitter Post
• https://git.kernel.org/stable/c/4e67f504ee9ded15e256b64f4fde150e917381d7 · Note
• https://git.kernel.org/stable/c/8d8507a457667f23477a15496b91908a5b5b7cf3 · Note
• https://twitter.com/windowsforum/status/2079122697167024384 · Twitter Post
• https://git.kernel.org/stable/c/833033e6e55acf11304ff7bbbdf18351d139c281 · Note