CVE-2026-53182
In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: reject oversized EMA RNR lists nl80211_parse_rnr_elems() stores the parsed element count in a u8-backed cfg80211_rnr_elems::cnt field and uses that count to size the…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). 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: wifi: nl80211: reject oversized EMA RNR lists nl80211_parse_rnr_elems() stores the parsed element count in a u8-backed cfg80211_rnr_elems::cnt field and uses that count to size the flexible array allocation. Reject nested NL80211_ATTR_EMA_RNR_ELEMS input once the count reaches 255, before incrementing it again. This keeps the parser aligned with the data structure it fills and matches the existing bound check used by nl80211_parse_mbssid_elems().
- 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
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05Patch
- https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2Patch
- https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1Patch
- https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7Patch
- https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6Patch
- https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.