SB2026082171 - Race condition in Linux kernel include linux

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Main Vulnerability Database SB2026082171

SB2026082171 - Race condition in Linux kernel include linux

Published: August 21, 2026

Security Bulletin ID SB2026082171
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-74578)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to disclose plaintext and compromise cryptographic operation integrity.

The vulnerability exists due to improper synchronization of shared cryptographic state in the AIO/async path in skcipher_recvmsg() when handling async skcipher receive operations. A local user can race an asynchronous skcipher receive operation with sendmsg(ALG_SET_IV) to disclose plaintext and compromise cryptographic operation integrity.

The described plaintext recovery applies to CTR/stream modes through IV/keystream reuse.


Remediation

Install update from vendor's website.

References