CVE-2026-52922

Summary

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

batman-adv: dat: handle forward allocation error

batadv_dat_forward_data() calls pskb_copy_for_clone() to duplicate an skb for each DHT candidate, but does not check the return value before passing it to batadv_send_skb_prepare_unicast_4addr(). That function dereferences the skb unconditionally, so a failed allocation triggers a NULL pointer dereference.

Skip forwarding to the current DHT candidate on allocation failure.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < 9bcebaedfb8479cb4affb23c7a0d000ca9a20e73affected
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < 2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8efaffected
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < ce0c381199402a2c58f4599f4f6ed100d872d0daaffected
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < 866ac1d57040ed0b44ca732e3c66b3aa6b93011caffected
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < 4d420d9ee70a220a2cd95aa0dd2e15acad66a505affected
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < 9cceea8eeba710def2a5707ee00f00c74a9a1cacaffected
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < cf48e75fc4fe0d5cc7721c82d454221d01367b93affected
LinuxLinux785ea1144182c341b8b85b0f8180291839d176a8 < 2d8826a2d3657cea66fb0370f9e521575a673871affected
LinuxLinux3.8affected
LinuxLinux0 < 3.8unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.142 <= 6.6.*unaffected
LinuxLinux6.12.92 <= 6.12.*unaffected
LinuxLinux6.18.34 <= 6.18.*unaffected
LinuxLinux7.0.11 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References