CVE-2023-28466

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-16 · updated 2026-06-17
Weakness: CWE-476

Description

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).

Affected products

Debian Linux: 10.0
Linux kernel: from 4.13 through 5.4.240; from 5.5 before 5.10.177; from 5.11 before 5.15.105; from 5.16 before 6.1.20; from 6.2 before 6.2.7 — fixed in 5.10.177, 5.15.105, 6.1.20, 6.2.7
NetApp H300S: all versions
NetApp H410C: all versions
NetApp H410S: all versions
NetApp H500S: all versions
NetApp H700S: all versions

How to fix

Upgrade to a fixed version: Linux kernel 5.10.177, 5.15.105, 6.1.20, 6.2.7. Check the vendor advisory for mitigations.

References

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