Answer in brief
CVE-2026-98698 records a Unknown severity vulnerability in wifi: mac80211: handle empty FILS association request payload. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <2f5b62f6534d336a62fdb9e88b186dd70b4323ef || >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <452f1c9b76f7a122bbc4630b9691bda4809677c4 || >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <20f939b0c151d1d28e6b62a76b2454fa6fe877f2 || >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <5bfd4b0b40b79781d900cb2f7da0685070f53c67 | 2f5b62f6534d336a62fdb9e88b186dd70b4323ef, 452f1c9b76f7a122bbc4630b9691bda4809677c4, 20f939b0c151d1d28e6b62a76b2454fa6fe877f2, 5bfd4b0b40b79781d900cb2f7da0685070f53c67 |
| Linux/Linuxgeneric | 4.10 | Not reported |
| Linux/Linuxgeneric | >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <0b1e4a7eeb6a301ee33bd318982927cbdbae9f36 || >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <2f5b62f6534d336a62fdb9e88b186dd70b4323ef || >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <452f1c9b76f7a122bbc4630b9691bda4809677c4 || >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <20f939b0c151d1d28e6b62a76b2454fa6fe877f2 || >=39404feee691a2dc524a629ed6eb5cfe5d8898d1 <5bfd4b0b40b79781d900cb2f7da0685070f53c67 | 0b1e4a7eeb6a301ee33bd318982927cbdbae9f36, 2f5b62f6534d336a62fdb9e88b186dd70b4323ef, 452f1c9b76f7a122bbc4630b9691bda4809677c4, 20f939b0c151d1d28e6b62a76b2454fa6fe877f2, 5bfd4b0b40b79781d900cb2f7da0685070f53c67 |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
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.
Quoted source text, attributed separately from HOL analysis.