Review reviewHigh

CVE-2024-35937

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: check A-MSDU format more carefully If it looks like there's another subframe in the A-MSDU but the header isn't fully there, we can end up reading data out of bounds, only to discard later. Make this a bit more careful and check if the subframe header can even be present.

CVSS
7.1
EPSS
0.34%
26.7% percentile
CISA KEV
Not listed
Published
2024.05.19
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.34%
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: check A-MSDU format more carefully If it looks like there's another subframe in the A-MSDU but the header isn't fully there, we can end up reading data out of bounds, only to discard later. Make this a bit more careful and check if the subframe header can even be present.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 966d5c2c22edcc0ab3d519af39f91a29329c979a < 9eb3bc0973d084423a6df21cf2c74692ff05647e, >= 6e4c0d0460bd32ca9244dff3ba2d2da27235de11 < 5d7a8585fbb31e88fb2a0f581b70667d3300d1e9, >= 6e4c0d0460bd32ca9244dff3ba2d2da27235de11 < 16da1e1dac23be45ef6e23c41b1508c400e6c544, >= 6e4c0d0460bd32ca9244dff3ba2d2da27235de11 < 9ad7974856926129f190ffbe3beea78460b3b7cc, >= 6.3, < 6.6.27, >= 6.7 < 6.8.6
Fixed versions
6.6.27, 6.8.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
CWE-125