CVE-2026-98952 Linux Kernel - Out-of-Bounds Read

Linux kernel contains a buffer over-read vulnerability in pfcp_session_recv due to improper linearization of SEID in PFCP packets, letting attackers cause out-of-bounds reads, exploit requires crafted PFCP packets with S flag set.

CVSS base score 7.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.21% 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:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Published
23 October 2026
Updated
25 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for SEID linearization in PFCP.

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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