CVE-2023-52996
published 2025-03-27CVE-2023-52996: In the Linux kernel, the following vulnerability has been resolved: ipv4: prevent potential spectre v1 gadget in fib_metrics_match() if (!type) continue; if…
PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.25%
16.6th percentile
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
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.11-1 (bookworm) | linux 6.1.11-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < 8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d | 8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d |
| linux | linux | >= 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < 7f9828fb1f688210e681268490576f0ca65c322a | 7f9828fb1f688210e681268490576f0ca65c322a |
| linux | linux | >= 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < ca3cf947760de050d558293002ad3e7f4b8745d2 | ca3cf947760de050d558293002ad3e7f4b8745d2 |
| linux | linux | >= 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < f9753ebd61be2d957b5504cbd3fd719674f05b7a | f9753ebd61be2d957b5504cbd3fd719674f05b7a |
| linux | linux | >= 5f9ae3d9e7e4ad6db0491abc7c4ae5452dbeadd8 < 5e9398a26a92fc402d82ce1f97cc67d832527da0 | 5e9398a26a92fc402d82ce1f97cc67d832527da0 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 4.14 < 5.4.231 | 5.4.231 |
| linux | linux_kernel | >= 5.11 < 5.15.91 | 5.15.91 |
| linux | linux_kernel | >= 5.16 < 6.1.9 | 6.1.9 |
| linux | linux_kernel | >= 5.5 < 5.10.166 | 5.10.166 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-f656-g9wf-2686: In the Linux kernel, the following vulnerability has been resolved:
ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
if (!type)
cont
ghsa_unreviewed·2025-03-27
CVE-2023-52996 [MEDIUM] GHSA-f656-g9wf-2686: In the Linux kernel, the following vulnerability has been resolved:
ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
if (!type)
cont
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.
OSV
CVE-2023-52996: In the Linux kernel, the following vulnerability has been resolved: ipv4: prevent potential spectre v1 gadget in fib_metrics_match() if (!type) contin
osv·2025-03-27·CVSS 5.5
CVE-2023-52996 [MEDIUM] CVE-2023-52996: In the Linux kernel, the following vulnerability has been resolved: ipv4: prevent potential spectre v1 gadget in fib_metrics_match() if (!type) contin
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.
Red Hat
kernel: ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
vendor_redhat·2025-03-27·CVSS 5.5
CVE-2023-52996 [MEDIUM] CWE-200 kernel: ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
kernel: ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
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.
A flaw was found in the fib_metrics_match function in the net/ipv4/fib_semantics.c file in the Linux kernel, which contains source code that can lead to CPU speculation or risk leaking kernel memory content. Specifically, this vulnerability can allows an attacker to exploit a Spectre v1 gadget attack.
Statement: Red Hat Product Security has rated this update with a security
Debian
CVE-2023-52996: linux - In the Linux kernel, the following vulnerability has been resolved: ipv4: preve...
vendor_debian·2023·CVSS 5.5
CVE-2023-52996 [MEDIUM] CVE-2023-52996: linux - In the Linux kernel, the following vulnerability has been resolved: ipv4: preve...
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.
Scope: local
bookworm: resolved (fixed in 6.1.11-1)
bullseye: resolved (fixed in 5.10.178-1)
forky: resolved (fixed in 6.1.11-1)
sid: resolved (fixed in 6.1.11-1)
trixie: resolved (fixed in 6.1.11-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
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
2025-03-27
Published