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.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Vendor	Product	Versions
Linux	Linux	>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 6792624d933146e2757b07092e93ad915cb58930; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 51532c7c1d357145f4ac561648499f7a6847f739; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 9e911eead187240193516edf55a0e1ab3425aa5b; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < c65ee4d3be5df395e48afbcd0946dd5fce4338a9; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < d5b8f5f8d6fc09a8af5ed139c688660f578ed732; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < b487a7754d874230299d5a9c2710ec4df8b2ed8a; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < c2026c6b603ebec52f55015496703fe79077accf; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < ef74ce5f0bc0e53ce702d8a794f3957884a26efc; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 8c964b82a4e97ec7f25e17b803ee196009b38a57
Linux	Linux	4.12