CVE-2026-74340
Published: August 18, 2026Last modified: August 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication The firmware-controlled rsp->count field is used as the loop bound for indexing into the flexible rsp->regs[] array without validation against the message length. A count exceeding the actual data causes out-of- bounds reads from the heap-allocated message buffer. Add a check that count fits within the received message.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack Vector | ADJACENT_NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.182-r0) |
| 25 LTS | linux-lts | Fixed (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.43-r0) |
References
- https://git.kernel.org/stable/c/0907c06dccae9e3c8d5a68eb9014beec73a36e79
- https://git.kernel.org/stable/c/22b0b8572a64362531dd0ed499b75e16282aeb2b
- https://git.kernel.org/stable/c/23d210877968657bd07e1a517e0b516db20a1d80
- https://git.kernel.org/stable/c/3cf92b44c4fb88a5e8de8733a4494c0956606bca
- https://git.kernel.org/stable/c/64228dfc4247aca178c01e5a37af7d8dcc7a6089
- https://git.kernel.org/stable/c/df2187acfca6c6cca372c5d35f42394d9c270b09
- https://git.kernel.org/stable/c/f03782f7f41f2afee5076a1ef08ced5649218771
- https://git.kernel.org/stable/c/f987efff29a5fe45320ea5991c9d5cb98b676953