CVE-2026-31626
Published: May 3, 2026Last modified: May 3, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: initialize le_tmp64 in rtw_BIP_verify() Initialize le_tmp64 to zero in rtw_BIP_verify() to prevent using uninitialized data. Smatch warns that only 6 bytes are copied to this 8-byte (u64) variable, leaving the last two bytes uninitialized: drivers/staging/rtl8723bs/core/rtw_security.c:1308 rtw_BIP_verify() warn: not copying enough bytes for '&le_tmp64' (8 vs 6 bytes) Initializing the variable at the start of the function fixes this warning and ensures predictable behavior.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.1 |
| Attack Vector | ADJACENT_NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | LOW |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.170-r0) |
| 25 LTS | linux-lts | Fixed (6.12.85-r0) | |
| Stream | linux-lts | Fixed (6.12.85-r0) |
References
- https://git.kernel.org/stable/c/8c964b82a4e97ec7f25e17b803ee196009b38a57
- https://git.kernel.org/stable/c/b487a7754d874230299d5a9c2710ec4df8b2ed8a
- https://git.kernel.org/stable/c/c2026c6b603ebec52f55015496703fe79077accf
- https://git.kernel.org/stable/c/c65ee4d3be5df395e48afbcd0946dd5fce4338a9
- https://git.kernel.org/stable/c/d5b8f5f8d6fc09a8af5ed139c688660f578ed732
- https://git.kernel.org/stable/c/ef74ce5f0bc0e53ce702d8a794f3957884a26efc