CVE-2026-98698wifi: mac80211: handle empty FILS association request payload
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% 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: handle empty FILS association request payload fils_encrypt_assoc_req() accepts a (Re)Association Request frame whose last element is the FILS Session element. crypt_len is then zero and aes_siv_encrypt() is called with an empty plaintext. kmemdup() returns ZERO_SIZE_PTR for a zero-length allocation, so the unconditional sg_init_one() puts an invalid page into the scatterlist. With CONFIG_DEBUG_SG this triggers a kernel BUG in sg_set_buf(); without the debug check the bogus page is handed to the crypto backend. AES-SIV is defined for empty plaintext and the S2V result is then the complete output, so handle this case before the CTR step, which has nothing to encrypt.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 12 days later
· 12 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)
- 0.18% · top 93% 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 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < de3297c8e521c0b0ddc89ece6fee84e25da9ecf0
- affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < ce70c87252a14020cb40032efe208efc6e61b1ee
- affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < d8c5dbbf584a1baaa008988ac64dd4495f7086bd
- affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < 0b1e4a7eeb6a301ee33bd318982927cbdbae9f36
- affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < 2f5b62f6534d336a62fdb9e88b186dd70b4323ef
- affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < 452f1c9b76f7a122bbc4630b9691bda4809677c4
- affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < 20f939b0c151d1d28e6b62a76b2454fa6fe877f2
- affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 – < 5bfd4b0b40b79781d900cb2f7da0685070f53c67
- affected 4.10
- unaffected < 4.10
- unaffected 5.10.273 – ≤ 5.10.*
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.56 – ≤ 6.18.*
- unaffected 7.2.10 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/de3297c8e521c0b0ddc89ece6fee84e25da9ecf0 (opens in a new tab)
- https://git.kernel.org/stable/c/ce70c87252a14020cb40032efe208efc6e61b1ee (opens in a new tab)
- https://git.kernel.org/stable/c/d8c5dbbf584a1baaa008988ac64dd4495f7086bd (opens in a new tab)
- https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36 (opens in a new tab)
- https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef (opens in a new tab)
- https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4 (opens in a new tab)
- https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2 (opens in a new tab)
- https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67 (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-2026-103952 (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-2026-98698)Record last updated .