CVE
DEBIAN-CVE-2026-80681
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(s...
In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after routeshortcircuit() Before routeshortcircuit(), the eth header pointer is cached from ethhdr(skb). Inside routeshortcircuit(), pskbmaypull() can be called, which may reallocate skb->head. In this case, returning to vxlanxmit() leaves the cached eth pointer pointing to freed memory, leading to a use-after-free when dereferencing eth->hdest. Fix this by updating eth = ethhdr(skb) after calling routeshortcircuit().
Package Versions Affected
Package Version
patch Availability
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CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
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C
H
U
0
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3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
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Related Resources
No items found.
References
https://security-tracker.debian.org/tracker/CVE-2026-80681