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Acknowledged

LIN1024-372 : Security Advisory - linux - CVE-2022-48648

Created: Apr 29, 2024 Updated: Jan 7, 2026

Resolved Date: Apr 30, 2024

Found In Version: 10.24.33.1

Severity: Standard

Applicable for: Wind River Linux LTS 24

Component/s: Kernel

Description

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

sfc: fix null pointer dereference in efx_hard_start_xmit

Trying to get the channel from the tx_queue variable here is wrong
because we can only be here if tx_queue is NULL, so we shouldn't
dereference it. As the above comment in the code says, this is very
unlikely to happen, but it's wrong anyway so let's fix it.

I hit this issue because of a different bug that caused tx_queue to be
NULL. If that happens, this is the error message that we get here:
  BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
  ...]
  RIP: 0010:efx_hard_start_xmit+0x153/0x170 [sfc]

CREATE(Triage):(User=admin) [CVE-2022-48648 (https://nvd.nist.gov/vuln/detail/CVE-2022-48648)