{"id":"CVE-2026-52922","summary":"batman-adv: dat: handle forward allocation error","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: dat: handle forward allocation error\n\nbatadv_dat_forward_data() calls pskb_copy_for_clone() to duplicate an skb\nfor each DHT candidate, but does not check the return value before passing\nit to batadv_send_skb_prepare_unicast_4addr(). That function dereferences\nthe skb unconditionally, so a failed allocation triggers a NULL pointer\ndereference.\n\nSkip forwarding to the current DHT candidate on allocation failure.","modified":"2026-07-10T03:54:03.563049219Z","published":"2026-06-24T07:14:17.185Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52922.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2d8826a2d3657cea66fb0370f9e521575a673871"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4d420d9ee70a220a2cd95aa0dd2e15acad66a505"},{"type":"WEB","url":"https://git.kernel.org/stable/c/866ac1d57040ed0b44ca732e3c66b3aa6b93011c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9bcebaedfb8479cb4affb23c7a0d000ca9a20e73"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9cceea8eeba710def2a5707ee00f00c74a9a1cac"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce0c381199402a2c58f4599f4f6ed100d872d0da"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf48e75fc4fe0d5cc7721c82d454221d01367b93"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52922.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52922"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"785ea1144182c341b8b85b0f8180291839d176a8"},{"fixed":"9bcebaedfb8479cb4affb23c7a0d000ca9a20e73"},{"fixed":"2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef"},{"fixed":"ce0c381199402a2c58f4599f4f6ed100d872d0da"},{"fixed":"866ac1d57040ed0b44ca732e3c66b3aa6b93011c"},{"fixed":"4d420d9ee70a220a2cd95aa0dd2e15acad66a505"},{"fixed":"9cceea8eeba710def2a5707ee00f00c74a9a1cac"},{"fixed":"cf48e75fc4fe0d5cc7721c82d454221d01367b93"},{"fixed":"2d8826a2d3657cea66fb0370f9e521575a673871"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52922.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.142"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.92"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.34"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52922.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}