CVE-2021-47251
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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]
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1284
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126Patch
- https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cbPatch
- https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11ePatch
- https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126Patch
- https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cbPatch
- https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11ePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.