CVE-2024-26665 Affecting kernel-syms package, versions <6.4.0-150600.23.17.1
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Test your applications- Snyk ID SNYK-SLES156-KERNELSYMS-7648025
- published 8 Aug 2024
- disclosed 7 Aug 2024
Introduced: 7 Aug 2024
CVE-2024-26665 Open this link in a new tabHow to fix?
Upgrade SLES:15.6 kernel-syms to version 6.4.0-150600.23.17.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-syms package and not the kernel-syms package as distributed by SLES.
See How to fix? for SLES:15.6 relevant fixed versions and status.
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.
References
- https://www.suse.com/security/cve/CVE-2024-26665.html
- https://bugzilla.suse.com/1222328
- 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
- https://git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html