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LIN1021-7651 : Security Advisory - linux - CVE-2023-52579

Created: Mar 2, 2024 Updated: Apr 16, 2024

Resolved Date: Apr 16, 2024

Found In Version: 10.21.20.1

Severity: Standard

Applicable for: Wind River Linux LTS 21

Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:

ipv4: fix null-deref in ipv4_link_failure

Currently, we assume the skb is associated with a device before calling
__ip_options_compile, which is not always the case if it is re-routed by
ipvs.
When skb->dev is NULL, dev_net(skb->dev) will become null-dereference.
This patch adds a check for the edge case and switch to use the net_device
from the rtable when skb->dev is NULL.

CREATE(Triage):(User=admin) CVE-2023-52579 (https://nvd.nist.gov/vuln/detail/CVE-2023-52579)