CVE-2026-31626

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6792624d933146e2757b07092e93ad915cb58930affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 51532c7c1d357145f4ac561648499f7a6847f739affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 9e911eead187240193516edf55a0e1ab3425aa5baffected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < c65ee4d3be5df395e48afbcd0946dd5fce4338a9affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < d5b8f5f8d6fc09a8af5ed139c688660f578ed732affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < b487a7754d874230299d5a9c2710ec4df8b2ed8aaffected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < c2026c6b603ebec52f55015496703fe79077accfaffected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < ef74ce5f0bc0e53ce702d8a794f3957884a26efcaffected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 8c964b82a4e97ec7f25e17b803ee196009b38a57affected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.136 <= 6.6.*unaffected
LinuxLinux6.12.83 <= 6.12.*unaffected
LinuxLinux6.18.24 <= 6.18.*unaffected
LinuxLinux6.19.14 <= 6.19.*unaffected
LinuxLinux7.0.1 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References