CVE-2026-89524
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
wifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets
In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: clamp assoc request/response lengths before subtracting IE offsets ath6kl_cfg80211_connect_event() subtracts fixed IE offsets from assoc_req_len (-= 4) and assoc_resp_len (-= 6), both u8, with no lower bound. The aggregate check recently added to ath6kl_wmi_connect_event_rx() bounds the declared lengths from above (their sum must fit the received event), but an assoc request/response shorter than its fixed offset still underflows here: the u8 wraps to ~250, and cfg80211_connect_result() / cfg80211_roamed() then treat that wrapped value as the IE length and copy that many bytes out of the small assoc_info buffer to user space via nl80211, disclosing adjacent slab memory. Clamp both lengths to their offsets before subtracting. Found by 0sec (https://0sec.ai) using automated source analysis; the missing lower bound is evident from source. Compile-tested.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | 225587bdbf4b0eb5265a71ee4dc183561a1857fc | Unavailable | None listed |
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | d337213a889705a69735079606d0b4c672b17605 | Unavailable | None listed |
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | e11d5ae96d5e52cb48fa27c6ad352d766d0322fb | Unavailable | None listed |
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | 6deb4d7a0c3d91821b2a8d5239e3d9933d9217d9 | Unavailable | None listed |
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | e3619bed5da125713b29ac881dc66f5e06606f88 | Unavailable | None listed |
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | e1330d719c047c4d8190a16be034b29fc601a815 | Unavailable | None listed |
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | 8eb73016fb3968cf2db3987a92764563a3af773a | Unavailable | None listed |
| bdcd81707973cf8aa9305337166f8ee842a050d4 | affected | git | 3bbd05723d15dd06f0560bcd94fbf9a91b5f5613 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.2 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |