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CVE

CVE-2026-53131

netfilter: require Ethernet MAC header before using eth_hdr()
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CVE

CVE-2026-53131

netfilter: require Ethernet MAC header before using eth_hdr()

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

netfilter: require Ethernet MAC header before using eth_hdr()

ip6t_eui64, xt_mac, the bitmap:ip,mac, hash:ip,mac, and

hash:mac ipset types, and nflogsyslog access eth_hdr(skb)

after either assuming that the skb is associated with an Ethernet

device or checking only that the ETH_HLEN bytes at

skbmacheader(skb) lie between skb->head and skb->data.

Make these paths first verify that the skb is associated with an

Ethernet device, that the MAC header was set, and that it spans at

least a full Ethernet header before accessing eth_hdr(skb).

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.4
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0c, https://git.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9, https://git.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743, https://git.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4d, https://git.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137, https://git.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570a, https://git.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53131.json, https://nvd.nist.gov/vuln/detail/CVE-2026-53131, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.4

CVSS Score
0
10

Basic Information

Base CVSS
9.4
EPSS Probability
0.00425%
EPSS Percentile
0.35763%
Introduced Version
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,2.6.12,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
62443dc21114c0bbc476fa62973db89743f2f137,5.15.210,6.1.176,6.6.143,6.12.94,6.18.36,7.0.13,6.1.176-1,6.1.176-1~deb11u1,6.12.94-1,7.0.0-1010.10~24.04.1,6.17.0-1022.22,6.17.0-1022.25,6.17.0-42.42,7.0.0-29.29~24.04.2,7.0.0-1016.16~24.04.1,6.17.0-1032.32,6.17.0-1020.20,0:5.15.210-148.245.amzn2,0:1.0-0.amzn2,1:6.1.176-220.358.amzn2023,1:1.0-0.amzn2023,1:6.18.36-69.134.amzn2023,1:6.12.94-123.174.amzn2023,6.12.95-r0,6.18.38-r0,6.18.36-r0

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