{"cve":"CVE-2024-26665","nvd":{"published":"2024-04-02T07:15:43.430","modified":"2026-08-04T11:16:55.497","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aaac1","https://git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99dab","https://git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5dd06","https://git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5d8a","https://git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a732"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:47:51.568503435+00:00"},"epss":{"cve":"CVE-2024-26665","score":0.00684,"percentile":0.52594,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}