{"id":"CVE-2026-52985","summary":"netdevsim: zero initialize struct iphdr in dummy sk_buff","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: zero initialize struct iphdr in dummy sk_buff\n\nSyzbot reports a KMSAN uninit-value originating from\nnsim_dev_trap_skb_build, with the allocation also\nbeing performed in the same function.\n\nFix this by calling skb_put_zero instead of skb_put to\nguarantee zero initialization of the whole IP header.","modified":"2026-07-08T08:13:46.584283311Z","published":"2026-06-24T16:28:59.871Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52985.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/175556c049eaec14efde8c6475e763b7579b9de7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/35eaa6d8d6c2ee65e96f507add856e0eacf24591"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e2cfd0904976e701d7a76b86b694e72af230ab0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/750d0091bebf44975421268d37484ef87060d263"},{"type":"WEB","url":"https://git.kernel.org/stable/c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/978ca6ff789f1f19c03288ac20cc1f4774e88490"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc6002865e8c4fcf9e94975f7cf023448d8764e2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52985.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52985"},{"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":"da58f90f11f597520f226caff1d3cfc115abedc9"},{"fixed":"175556c049eaec14efde8c6475e763b7579b9de7"},{"fixed":"6e2cfd0904976e701d7a76b86b694e72af230ab0"},{"fixed":"1b7b6ae0e93b8d512e208b1378d74af052e4f4e7"},{"fixed":"818f7673ed7f4a29d4b9cee8184c47d6e57162b4"},{"fixed":"978ca6ff789f1f19c03288ac20cc1f4774e88490"},{"fixed":"750d0091bebf44975421268d37484ef87060d263"},{"fixed":"bc6002865e8c4fcf9e94975f7cf023448d8764e2"},{"fixed":"35eaa6d8d6c2ee65e96f507add856e0eacf24591"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52985.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"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":"6.6.141"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.91"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52985.json"}}],"schema_version":"1.7.5"}