CVE-2023-52996

ipv4: prevent potential spectre v1 gadget in fib_metrics_match()

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

27 Mar 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 · Linux

References

https://git.kernel.org/stable/c/5e9398a26a92fc402d82ce1f97cc67d832527da0 https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322a https://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d https://git.kernel.org/stable/c/ca3cf947760de050d558293002ad3e7f4b8745d2 https://git.kernel.org/stable/c/f9753ebd61be2d957b5504cbd3fd719674f05b7a