{"id":"CVE-2024-26665","summary":"tunnels: fix out of bounds access when building IPv6 PMTU error","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntunnels: fix out of bounds access when building IPv6 PMTU error\n\nIf the ICMPv6 error is built from a non-linear skb we get the following\nsplat,\n\n  BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240\n  Read of size 4 at addr ffff88811d402c80 by task netperf/820\n  CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543\n  ...\n   kasan_report+0xd8/0x110\n   do_csum+0x220/0x240\n   csum_partial+0xc/0x20\n   skb_tunnel_check_pmtu+0xeb9/0x3280\n   vxlan_xmit_one+0x14c2/0x4080\n   vxlan_xmit+0xf61/0x5c00\n   dev_hard_start_xmit+0xfb/0x510\n   __dev_queue_xmit+0x7cd/0x32a0\n   br_dev_queue_push_xmit+0x39d/0x6a0\n\nUse skb_checksum instead of csum_partial who cannot deal with non-linear\nSKBs.","modified":"2026-03-20T12:35:06.638784Z","published":"2024-04-02T06:22:14.264Z","related":["ALSA-2024:7000","ALSA-2024:7001","SUSE-SU-2024:2802-1","SUSE-SU-2024:2894-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2939-1","SUSE-SU-2024:2947-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26665.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aaac1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99dab"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5dd06"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5d8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a732"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26665.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26665"},{"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":"4cb47a8644cc9eb8ec81190a50e79e6530d0297f"},{"fixed":"e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d"},{"fixed":"d964dd1bc1452594b4207d9229c157d9386e5d8a"},{"fixed":"e37cde7a5716466ff2a76f7f27f0a29b05b9a732"},{"fixed":"510c869ffa4068c5f19ff4df51d1e2f3a30aaac1"},{"fixed":"7dc9feb8b1705cf00de20563b6bc4831f4c99dab"},{"fixed":"d75abeec401f8c86b470e7028a13fcdc87e5dd06"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-26665.json"}}],"schema_version":"1.7.5"}