CVE-2024-26665 : faille élevée linux linux kernel (CVSS 7.1)

In the Linux kernel, the following vulnerability has been resolved: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240 Read of size 4 at addr ffff88811d402c80 by task netperf/820 CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543 ... kasan_report+0xd8/0x110 do_csum+0x220/0x240 csum_partial+0xc/0x20 skb_tunnel_check_pmtu+0xeb9/0x3280 vxlan_xmit_one+0x14c2/0x4080 vxlan_xmit+0xf61/0x5c00 dev_hard_start_xmit+0xfb/0x510 __dev_queue_xmit+0x7cd/0x32a0 br_dev_queue_push_xmit+0x39d/0x6a0 Use skb_checksum instead of csum_partial who cannot deal with non-linear SKBs.

Sévérité

Élevée (CVSS 7.1)

Vecteur CVSS

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Exploitation active

Non signalée par la CISA

Publication

2 avr. 2024

Dernière mise à jour

4 août 2026

• linux linux kernel
• debian debian linux

• Fiche CVE-2024-26665 sur le NVD (NIST)
• git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aa…
• git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99…
• git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5d…
• git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5…
• git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a…
• git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfb…
• lists.debian.org/debian-lts-announce/2024/06/msg00017.html