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High severity7.8NVD Advisory· Published May 21, 2024· Updated Jun 17, 2026

CVE-2021-47251

CVE-2021-47251

Description

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

mac80211: fix skb length check in ieee80211_scan_rx()

Replace hard-coded compile-time constants for header length check with dynamic determination based on the frame type. Otherwise, we hit a validation WARN_ON in cfg80211 later.

[style fixes, reword commit message]

Affected products

9
  • Linux/Kernel9 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.10,<5.10.46
    • cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 5.10

Patches

Vulnerability mechanics

References

3

News mentions

0

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