Critical severity9.8NVD Advisory· Published Aug 28, 2026· Updated Aug 29, 2026
CVE-2026-80681
CVE-2026-80681
Description
In the Linux kernel, the following vulnerability has been resolved:
vxlan: re-fetch eth header after route_shortcircuit()
Before route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb).
Inside route_shortcircuit(), pskb_may_pull() can be called, which may reallocate skb->head.
In this case, returning to vxlan_xmit() leaves the cached eth pointer pointing to freed memory, leading to a use-after-free when dereferencing eth->h_dest.
Fix this by updating eth = eth_hdr(skb) after calling route_shortcircuit().
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
16- osv-coords14 versionspkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0pkg:linux/kernelpkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0
< 6.12.0-160000.38.1+ 13 more
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: >= 3.10.0, < 5.10.265
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1.160000.2.22
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/1235e017aa11cf01e91b613c4c5ed6aa28934fffnvd
- git.kernel.org/stable/c/1395a676ec15a0a02a2a6d86602324f2d5fd41d5nvd
- git.kernel.org/stable/c/1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585nvd
- git.kernel.org/stable/c/1b7f7b653e3557690047c62f03b80a24ea5a58a5nvd
- git.kernel.org/stable/c/2355c8c26d2aa1b4385b369e67202e47d460d555nvd
- git.kernel.org/stable/c/6375093eb45cd7d89f1945f939eeae3b29d79f56nvd
- git.kernel.org/stable/c/bf045341dfb3e767f0ff94cf240ce3c371973bd4nvd
- git.kernel.org/stable/c/c9dceac9e1c7c772c43c732fc0d325e72835801anvd
News mentions
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