CVE-2022-50812

Summary

In the Linux kernel, the following vulnerability has been resolved:

security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6

A bad bug in clang's implementation of -fzero-call-used-regs can result in NULL pointer dereferences (see the links above the check for more information). Restrict CONFIG_CC_HAS_ZERO_CALL_USED_REGS to either a supported GCC version or a clang newer than 15.0.6, which will catch both a theoretical 15.0.7 and the upcoming 16.0.0, which will both have the bug fixed.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa82adfd5c7cb4b8bb37ef439aed954f9972bb618 < 8a4236456a3a402f6bb92aa7b75e7a3b4ef7a72caffected
LinuxLinuxa82adfd5c7cb4b8bb37ef439aed954f9972bb618 < 0b202dfedb5aa2e7d07d849be33fa3a48c026926affected
LinuxLinuxa82adfd5c7cb4b8bb37ef439aed954f9972bb618 < 21ca0bfa11bbb9a9207f5d2104f47d3d71b4616eaffected
LinuxLinuxa82adfd5c7cb4b8bb37ef439aed954f9972bb618 < d6a9fb87e9d18f3394a9845546bbe868efdccfd2affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References