CVE-2024-41090

tap: add missing verification for short frame

State: Published
Severity: 8.8 High
Published: Jul 29, 2024
Updated: Aug 5, 2026
Reserved: Jul 12, 2024

Description

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

tap: add missing verification for short frame

The cited commit missed to check against the validity of the frame length in the tap_get_user_xdp() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tap_get_user_xdp()-->skb_set_network_header() may assume the size is more than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata.

In the alternative path, tap_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted.

This is to drop any frame shorter than the Ethernet header size just like how tap_get_user() does.

CVE: CVE-2024-41090

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0efac27791ee068075d80f07c55a229b1335ce12 to before 8be915fc5ff9a5e296f6538be12ea75a1a93bdeaAffected 0efac27791ee068075d80f07c55a229b1335ce12 to before 7431144b406ae82807eb87d8c98e518475b0450fAffected 0efac27791ee068075d80f07c55a229b1335ce12 to before e5e5e63c506b93b89b01f522b6a7343585f784e6Affected 0efac27791ee068075d80f07c55a229b1335ce12 to before ee93e6da30377cf2a75e16cd32bb9fcd86a61c46Affected 0efac27791ee068075d80f07c55a229b1335ce12 to before aa6a5704cab861c9b2ae9f475076e1881e87f5aaAffected 0efac27791ee068075d80f07c55a229b1335ce12 to before 73d462a38d5f782b7c872fe9ae8393d9ef5483daAffected 0efac27791ee068075d80f07c55a229b1335ce12 to before e1a786b9bbb767fd1c922d424aaa8078cc542309Affected 0efac27791ee068075d80f07c55a229b1335ce12 to before ed7f2afdd0e043a397677e597ced0830b83ba0b3Affected
LinuxLinux	4.20Affected before 4.20Not affected 5.4.281 through 5.4.Not affected 5.10.223 through 5.10.Not affected 5.15.164 through 5.15.Not affected 6.1.102 through 6.1.Not affected 6.6.43 through 6.6.Not affected 6.9.12 through 6.9.Not affected 6.10.2 through 6.10.*Not affected 6.11 and laterNot affected

Product

Versions

LinuxLinux

0efac27791ee068075d80f07c55a229b1335ce12 to before 8be915fc5ff9a5e296f6538be12ea75a1a93bdeaAffected
0efac27791ee068075d80f07c55a229b1335ce12 to before 7431144b406ae82807eb87d8c98e518475b0450fAffected
0efac27791ee068075d80f07c55a229b1335ce12 to before e5e5e63c506b93b89b01f522b6a7343585f784e6Affected
0efac27791ee068075d80f07c55a229b1335ce12 to before ee93e6da30377cf2a75e16cd32bb9fcd86a61c46Affected
0efac27791ee068075d80f07c55a229b1335ce12 to before aa6a5704cab861c9b2ae9f475076e1881e87f5aaAffected
0efac27791ee068075d80f07c55a229b1335ce12 to before 73d462a38d5f782b7c872fe9ae8393d9ef5483daAffected
0efac27791ee068075d80f07c55a229b1335ce12 to before e1a786b9bbb767fd1c922d424aaa8078cc542309Affected
0efac27791ee068075d80f07c55a229b1335ce12 to before ed7f2afdd0e043a397677e597ced0830b83ba0b3Affected

LinuxLinux

4.20Affected
before 4.20Not affected
5.4.281 through 5.4.*Not affected
5.10.223 through 5.10.*Not affected
5.15.164 through 5.15.*Not affected
6.1.102 through 6.1.*Not affected
6.6.43 through 6.6.*Not affected
6.9.12 through 6.9.*Not affected
6.10.2 through 6.10.*Not affected
6.11 and laterNot affected

References

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