CVE-2026-52922
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < 9bcebaedfb8479cb4affb23c7a0d000ca9a20e73 | affected |
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < 2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef | affected |
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < ce0c381199402a2c58f4599f4f6ed100d872d0da | affected |
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < 866ac1d57040ed0b44ca732e3c66b3aa6b93011c | affected |
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < 4d420d9ee70a220a2cd95aa0dd2e15acad66a505 | affected |
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < 9cceea8eeba710def2a5707ee00f00c74a9a1cac | affected |
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < cf48e75fc4fe0d5cc7721c82d454221d01367b93 | affected |
| Linux | Linux | 785ea1144182c341b8b85b0f8180291839d176a8 < 2d8826a2d3657cea66fb0370f9e521575a673871 | affected |
| Linux | Linux | 3.8 | affected |
| Linux | Linux | 0 < 3.8 | unaffected |
| Linux | Linux | 5.10.258 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.209 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.175 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.142 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.92 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.34 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.11 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/9bcebaedfb8479cb4affb23c7a0d000ca9a20e73
- https://git.kernel.org/stable/c/2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef
- https://git.kernel.org/stable/c/ce0c381199402a2c58f4599f4f6ed100d872d0da
- https://git.kernel.org/stable/c/866ac1d57040ed0b44ca732e3c66b3aa6b93011c
- https://git.kernel.org/stable/c/4d420d9ee70a220a2cd95aa0dd2e15acad66a505
- https://git.kernel.org/stable/c/9cceea8eeba710def2a5707ee00f00c74a9a1cac
- https://git.kernel.org/stable/c/cf48e75fc4fe0d5cc7721c82d454221d01367b93
- https://git.kernel.org/stable/c/2d8826a2d3657cea66fb0370f9e521575a673871
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