CVE-2021-47611

mac80211: validate extended element ID is present

MEDIUM

5.5

CVSS Score

Published: June 19, 2024 at 02:58 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 0.3%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: mac80211: validate extended element ID is present Before attempting to parse an extended element, verify that the extended element ID is present.

Affected

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

Linux Kernel · Linux

95%

4.19 ≤ v < 4.19.2224.19 ≤ v < 5.10.884.19 ≤ v < 5.15.114.19 ≤ v < 5.164.19 ≤ v < 5.4.1684.20 ≤ v < 5.4.1685.11 ≤ v < 5.15.115.5 ≤ v < 5.10.8841cbb0f5a29592874355e4159489eb08337cd50e5.16 rc1 5.16 rc2 5.16 rc3 5.16 rc4 5.16 rc5

Vendor states this is fixed in 03029bb044ccee60adbc93e70713f3ae58abc3a1 (fixed)

Vendor states this is fixed in 768c0b19b50665e337c96858aa2b7928d6dcf756 (fixed)

Vendor states this is fixed in 7fd214fc7f2ee3a89f91e717e3cfad55f5a27045 (fixed)

Vendor states this is fixed in a19cf6844b509d44ecbd536f33d314d91ecdd2b5 (fixed)

Vendor states this is fixed in c62b16f98688ae7bc0ab23a6490481f4ce9b3a49 (fixed)

Vendor states this is fixed in 4.19 (unaffected)

Vendor states this is fixed in 4.19.222 (unaffected)

Vendor states this is fixed in 5.10.88 (unaffected)

Vendor states this is fixed in 5.15.11 (unaffected)

Vendor states this is fixed in 5.16 (unaffected)

Vendor states this is fixed in 5.4.168 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references