CVE-2023-53817

Summary

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

crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()

During NVMeTCP Authentication a controller can trigger a kernel oops by specifying the 8192 bit Diffie Hellman group and passing a correctly sized, but zeroed Diffie Hellamn value. mpi_cmp_ui() was detecting this if the second parameter was 0, but 1 is passed from dh_is_pubkey_valid(). This causes the null pointer u->d to be dereferenced towards the end of mpi_cmp_ui()

Affected Software

VendorProductVersion RangeStatus
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < fde791e8a96a64ea7b0ad2440e43586447a209c6affected
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < ae63e84ffda74267bf7277c38415ba38389229a0affected
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 61f5453e9706e99713825594e0c8f9031485fb5faffected
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 0fc7147c694394f8a8cbc19570c6bc918cac0906affected
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 67589d247909043e94d2dd5fb590958e0f99d58daffected
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < d3ad023a39f1127dcfd331c562673355dc078650affected
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 12ac013ad7ff0df066451e825801d805095b3776affected
LinuxLinux12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 9e47a758b70167c9301d2b44d2569f86c7796f2daffected
LinuxLinux3.7affected
LinuxLinux0 < 3.7unaffected
LinuxLinux4.14.326 <= 4.14.*unaffected
LinuxLinux4.19.295 <= 4.19.*unaffected
LinuxLinux5.4.257 <= 5.4.*unaffected
LinuxLinux5.10.197 <= 5.10.*unaffected
LinuxLinux5.15.133 <= 5.15.*unaffected
LinuxLinux6.1.55 <= 6.1.*unaffected
LinuxLinux6.5.5 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

References