CVE-2024-41090

Summary

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

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < 8be915fc5ff9a5e296f6538be12ea75a1a93bdeaaffected
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < 7431144b406ae82807eb87d8c98e518475b0450faffected
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < e5e5e63c506b93b89b01f522b6a7343585f784e6affected
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < ee93e6da30377cf2a75e16cd32bb9fcd86a61c46affected
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < aa6a5704cab861c9b2ae9f475076e1881e87f5aaaffected
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < 73d462a38d5f782b7c872fe9ae8393d9ef5483daaffected
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < e1a786b9bbb767fd1c922d424aaa8078cc542309affected
LinuxLinux0efac27791ee068075d80f07c55a229b1335ce12 < ed7f2afdd0e043a397677e597ced0830b83ba0b3affected
LinuxLinux4.20affected
LinuxLinux0 < 4.20unaffected
LinuxLinux5.4.281 <= 5.4.*unaffected
LinuxLinux5.10.223 <= 5.10.*unaffected
LinuxLinux5.15.164 <= 5.15.*unaffected
LinuxLinux6.1.102 <= 6.1.*unaffected
LinuxLinux6.6.43 <= 6.6.*unaffected
LinuxLinux6.9.12 <= 6.9.*unaffected
LinuxLinux6.10.2 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References