ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.3%
exploitation probability
0.3%top 84% of all CVEs
observed exploitation
nono source reports it
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 products
Linux · LinuxReferences
https://git.kernel.org/stable/c/5e9398a26a92fc402d82ce1f97cc67d832527da0https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322ahttps://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467dhttps://git.kernel.org/stable/c/ca3cf947760de050d558293002ad3e7f4b8745d2https://git.kernel.org/stable/c/f9753ebd61be2d957b5504cbd3fd719674f05b7a