What’s Vulnerable › Vulnerabilities

CVE-2026-23302: net: annotate data-races around sk->sk_{data_ready,write_space}

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-25 · updated 2026-10-15
• Weakness: CWE-362

Description

In the Linux kernel, the following vulnerability has been resolved: net: annotate data-races around sk->sk_{data_ready,write_space} skmsg (and probably other layers) are changing these pointers while other cpus might read them concurrently. Add corresponding READ_ONCE()/WRITE_ONCE() annotations for UDP, TCP and AF_UNIX.

Affected products

• Linux kernel: from 4.20 before 6.6.136; from 6.7 before 6.12.82; from 6.13 before 6.18.17; from 6.19 before 6.19.7; 7.0-rc1, 7.0-rc2 — fixed in 6.12.82, 6.18.17, 6.19.7, 6.6.136

How to fix

Upgrade to a fixed version: Linux kernel 6.12.82, 6.18.17, 6.19.7, 6.6.136. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/279f2b67d1c44ee139bd3fdb221850daa9358449
• https://git.kernel.org/stable/c/27fccdbcbbfc4651b6f66756e6fa3f52e051ec23
• https://git.kernel.org/stable/c/2ef2b20cf4e04ac8a6ba68493f8780776ff84300
• https://git.kernel.org/stable/c/7ad01905831c815520f1b0486336a03bb7420465
• https://git.kernel.org/stable/c/c494448bb522bbbb63096540eb2319101a0480ab
• https://git.kernel.org/stable/c/f17c1c4acbe2bd702abce73a847a04a196fab2c5
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html

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