CVE-2023-6176: Kernel: local dos vulnerability in scatterwalk_copychunks

Severity: medium (CVSS 4.7 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: 2023-11-16 · updated 2026-06-17
Weakness: CWE-476

Description

A null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm scatterwalk functionality. This issue occurs when a user constructs a malicious packet with specific socket configuration, which could allow a local user to crash the system or escalate their privileges on the system.

Affected products

Linux kernel: all versions
Red Hat Enterprise Linux: 8.0, 9.0

References

https://access.redhat.com/errata/RHSA-2024:2394
https://access.redhat.com/errata/RHSA-2024:2950
https://access.redhat.com/errata/RHSA-2024:3138
https://access.redhat.com/security/cve/CVE-2023-6176
https://bugzilla.redhat.com/show_bug.cgi?id=2219359
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cfaa80c91f6f99b9342b6557f0f0e1143e434066
http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html
https://access.redhat.com/errata/RHSA-2024:2394
https://access.redhat.com/errata/RHSA-2024:2950
https://access.redhat.com/errata/RHSA-2024:3138
https://access.redhat.com/security/cve/CVE-2023-6176
https://bugzilla.redhat.com/show_bug.cgi?id=2219359

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