Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c5c77ba18ea66aa05441c71e38473efb787705a4 to < 34a23fd9ddd683a03c7e8cc0ceded3e59e354b99affectedc5c77ba18ea66aa05441c71e38473efb787705a4 to < 549f02d8ec94d39092ab6d9b103d0d6783a4b024affectedc5c77ba18ea66aa05441c71e38473efb787705a4 to < bfbddeadd4779651403035ee177ae2f22f9f5521affectedc5c77ba18ea66aa05441c71e38473efb787705a4 to < 9907ac9b9a18b92fc34b9e4cb9e10f208dc1d3f7affectedc5c77ba18ea66aa05441c71e38473efb787705a4 to < c97b2a00059608592ad0d86fbb813a4f8cf9464baffectedc5c77ba18ea66aa05441c71e38473efb787705a4 to < d8388614de613c28eeb659c10115060a83739924affectedc5c77ba18ea66aa05441c71e38473efb787705a4 to < 0c7f21d8bd2f93998b72b7a7f93152336aeca4ddaffectedc5c77ba18ea66aa05441c71e38473efb787705a4 to < d049e56b1739101d1c4d81deedb269c52a8dbba0affected
Linux Linux
Default version status: affected
4.2affected0 to < 4.2unaffected5.10.253 to ≤ 5.10.*unaffected5.15.203 to ≤ 5.15.*unaffected6.1.168 to ≤ 6.1.*unaffected6.6.134 to ≤ 6.6.*unaffected6.12.81 to ≤ 6.12.*unaffected6.18.22 to ≤ 6.18.*unaffected6.19.12 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/34a23fd9ddd683a03c7e8cc0ceded3e59e354b99 ↗
- https://git.kernel.org/stable/c/549f02d8ec94d39092ab6d9b103d0d6783a4b024 ↗
- https://git.kernel.org/stable/c/bfbddeadd4779651403035ee177ae2f22f9f5521 ↗
- https://git.kernel.org/stable/c/9907ac9b9a18b92fc34b9e4cb9e10f208dc1d3f7 ↗
- https://git.kernel.org/stable/c/c97b2a00059608592ad0d86fbb813a4f8cf9464b ↗
- https://git.kernel.org/stable/c/d8388614de613c28eeb659c10115060a83739924 ↗
- https://git.kernel.org/stable/c/0c7f21d8bd2f93998b72b7a7f93152336aeca4dd ↗
- https://git.kernel.org/stable/c/d049e56b1739101d1c4d81deedb269c52a8dbba0 ↗