CVE-2024-46799

Summary

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

net: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX

If number of TX queues are set to 1 we get a NULL pointer dereference during XDP_TX.

~# ethtool -L eth0 tx 1 ~# ./xdp-trafficgen udp -A <ipv6-src> -a <ipv6-dst> eth0 -t 2 Transmitting on eth0 (ifindex 2) [ 241.135257] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030

Fix this by using actual TX queues instead of max TX queues when picking the TX channel in am65_cpsw_ndo_xdp_xmit().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 < 2e7189d2b1de51fc2567676cd4f96c0fe0960b9faffected
LinuxLinux8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 < 0a50c35277f96481a5a6ed5faf347f282040c57daffected
LinuxLinux6.10affected
LinuxLinux0 < 6.10unaffected
LinuxLinux6.10.10 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References