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CVE-2021-46948

sfc: farch: fix TX queue lookup in TX event handling

MEDIUM
5.5
CVSS Score
Published: February 27, 2024 at 06:40 PM UTC
Updated: August 5, 2026 at 09:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: sfc: farch: fix TX queue lookup in TX event handling We're starting from a TXQ label, not a TXQ type, so efx_channel_get_tx_queue() is inappropriate (and could return NULL, leading to panics).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.10 ≤ v < 5.10.365.10 ≤ v < 5.11.205.10 ≤ v < 5.12.35.10 ≤ v < 5.135.10.0 ≤ v < 5.10.365.11.0 ≤ v < 5.11.205.12.0 ≤ v < 5.12.312804793b17c0e19115a90d98f2f3df0cb79e2335.10
Vendor states this is fixed in 35c7a83ad1bb1d48ae249346e61b1132bcbf9052 (fixed)
Vendor states this is fixed in 83b09a1807415608b387c7bc748d329fefc5617e (fixed)
Vendor states this is fixed in bf2b941d0a6f2d3b9f5fa3c4c21bdd54f71ce253 (fixed)
Vendor states this is fixed in e531db1ea6f98c9612cb2de093a107c7eadfb96c (fixed)
Vendor states this is fixed in 5.10 (unaffected)
Vendor states this is fixed in 5.10.36 (unaffected)
Vendor states this is fixed in 5.11.20 (unaffected)
Vendor states this is fixed in 5.12.3 (unaffected)
Vendor states this is fixed in 5.13 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/35c7a83ad1bb1d48ae249346e61b1132bcbf9052
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/83b09a1807415608b387c7bc748d329fefc5617e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bf2b941d0a6f2d3b9f5fa3c4c21bdd54f71ce253
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e531db1ea6f98c9612cb2de093a107c7eadfb96c

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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