CVE-2026-98887wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO hwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload to a struct hwsim_tx_rate * and unconditionally reads IEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds the attribute from above (NLA_BINARY .len is a maximum) and the op sets GENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is accepted and the loop reads past the payload. Require the exact length in the policy, so a malformed attribute is rejected before the handler runs.
Timeline
ID reserved
By Linux
- 28 days later
· 28 days later
Published
- 3 days later
· 3 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 5d44fe7c9808c56e136e59147bd932f5491520f1 – < 3a96bb65b4b820d8b41fa155781ec1c29e3479d4
- affected 5d44fe7c9808c56e136e59147bd932f5491520f1 – < 59e1f2a0242232b4a3af144ae317d3913fc09046
- affected 5d44fe7c9808c56e136e59147bd932f5491520f1 – < 1ae85bb34fe3510659b86d6a5f8036dd498233f8
- affected 5d44fe7c9808c56e136e59147bd932f5491520f1 – < 6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695
- affected 5d44fe7c9808c56e136e59147bd932f5491520f1 – < b5b1234bbfa25537fb9a5c0d62c328ed4547f721
- affected 5d44fe7c9808c56e136e59147bd932f5491520f1 – < 13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7
- affected 5d44fe7c9808c56e136e59147bd932f5491520f1 – < 3dc723ac78a6e4fa0fd49e27e487ed319da40a9f
- affected 5.7
- unaffected < 5.7
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4 (opens in a new tab)
- https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046 (opens in a new tab)
- https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8 (opens in a new tab)
- https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695 (opens in a new tab)
- https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721 (opens in a new tab)
- https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7 (opens in a new tab)
- https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-108681 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98887)Record last updated .