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CVE-2023-53113

wifi: nl80211: fix NULL-ptr deref in offchan check

Medium5.5EPSS 0.20%
Published
Updated
Reserved
Assigned by
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: fix NULL-ptr deref in offchan check If, e.g. in AP mode, the link was already created by userspace but not activated yet, it has a chandef but the chandef isn't valid and has no channel. Check for this and ignore this link.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 18 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2023-53113, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.20% · top 90% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Weakness

Affected products

  • Linux · Linux

    • affected 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 – < 87e80ea4fbc9ce2f2005905fdbcd38baaa47463a
    • affected 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 – < 201a836c2385fdd2b9d0a8e7737bba5b26f1863a
    • affected 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 – < f624bb6fad23df3270580b4fcef415c6e7bf7705
    • affected 7a53ad13c09150076b7ddde96c2dfc5622c90b45
    • affected 5.19.2 – < 5.20

  • Linux · Linux

    • affected 6.0
    • unaffected < 6.0
    • unaffected 6.1.21 – ≤ 6.1.*
    • unaffected 6.2.8 – ≤ 6.2.*
    • unaffected 6.3 – ≤ *

References (3)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .