{"id":"CVE-2024-26665","title":"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-…","summary":"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-…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-125"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.9, < 5.10.210","linux_kernel >= 5.11, < 5.15.149","linux_kernel >= 5.16, < 6.1.78","linux_kernel >= 6.2, < 6.6.17","linux_kernel >= 6.7, < 6.7.5","linux_kernel = 6.8","debian_linux = 10.0"],"patched":["linux_kernel 6.7.5"],"published":"2024-04-02","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-26665","references":[{"url":"https://git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aaac1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99dab","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5dd06","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5d8a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a732","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aaac1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99dab","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5dd06","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5d8a","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a732","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00679,"epssPercentile":0.5092,"ingestedAt":"2026-08-05T10:46:47.861Z","slug":"CVE-2024-26665","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 5.9, < 5.10.210`\n- `linux_kernel >= 5.11, < 5.15.149`\n- `linux_kernel >= 5.16, < 6.1.78`\n- `linux_kernel >= 6.2, < 6.6.17`\n- `linux_kernel >= 6.7, < 6.7.5`\n- `linux_kernel = 6.8`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.7.5`","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}