CVE-2026-31780
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: wilc1000: fix u8 overflow in SSID scan buffer size calculation
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix u8 overflow in SSID scan buffer size calculation The variable valuesize is declared as u8 but accumulates the total length of all SSIDs to scan. Each SSID contributes up to 33 bytes (IEEE80211_MAX_SSID_LEN + 1), and with WILC_MAX_NUM_PROBED_SSID (10) SSIDs the total can reach 330, which wraps around to 74 when stored in a u8. This causes kmalloc to allocate only 75 bytes while the subsequent memcpy writes up to 331 bytes into the buffer, resulting in a 256-byte heap buffer overflow. Widen valuesize from u8 to u32 to accommodate the full range.
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) |
|---|---|---|---|---|---|
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | 34a23fd9ddd683a03c7e8cc0ceded3e59e354b99 | Unavailable | None listed |
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | 549f02d8ec94d39092ab6d9b103d0d6783a4b024 | Unavailable | None listed |
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | bfbddeadd4779651403035ee177ae2f22f9f5521 | Unavailable | None listed |
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | 9907ac9b9a18b92fc34b9e4cb9e10f208dc1d3f7 | Unavailable | None listed |
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | c97b2a00059608592ad0d86fbb813a4f8cf9464b | Unavailable | None listed |
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | d8388614de613c28eeb659c10115060a83739924 | Unavailable | None listed |
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | 0c7f21d8bd2f93998b72b7a7f93152336aeca4dd | Unavailable | None listed |
| c5c77ba18ea66aa05441c71e38473efb787705a4 | affected | git | d049e56b1739101d1c4d81deedb269c52a8dbba0 | 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) |
|---|---|---|---|---|---|
| 4.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.2 | Unavailable | None listed |
| 5.10.253 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.203 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.168 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.134 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.81 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.22 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.12 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |