CVE-2023-52996

Summary

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

ipv4: prevent potential spectre v1 gadget in fib_metrics_match()

if (!type) continue; if (type > RTAX_MAX) return false; … fi_val = fi->fib_metrics->metrics[type - 1];

@type being used as an array index, we need to prevent cpu speculation or risk leaking kernel memory content.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < 8f0eb24f1a7a60ce635f0d757a46f1a37a4d467daffected
LinuxLinux5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < 7f9828fb1f688210e681268490576f0ca65c322aaffected
LinuxLinux5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < ca3cf947760de050d558293002ad3e7f4b8745d2affected
LinuxLinux5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < f9753ebd61be2d957b5504cbd3fd719674f05b7aaffected
LinuxLinux5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < 5e9398a26a92fc402d82ce1f97cc67d832527da0affected
LinuxLinux4.14affected
LinuxLinux0 < 4.14unaffected
LinuxLinux5.4.231 <= 5.4.*unaffected
LinuxLinux5.10.166 <= 5.10.*unaffected
LinuxLinux5.15.91 <= 5.15.*unaffected
LinuxLinux6.1.9 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References