CVE-2026-98241 Linux Kernel - Out of Bounds Read

Linux kernel contains a memory misinterpretation vulnerability in IPv6 xfrm local error paths caused by dereferencing skb->sk as a full socket when it may be a mini-socket, letting attackers cause out-of-bounds read, exploit requires triggering specific IPv6 XFRM tunnel routes with lower MTU.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.14% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
6 October 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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