01 Record

CVE-2026-98490

net: openvswitch: conntrack: fix helper UAF due to extensions realloc

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

net: openvswitch: conntrack: fix helper UAF due to extensions realloc

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.61% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 49.3% of scored records. A rank, not a probability.
NVD base score: 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Received. NVD last modified this record on 2026-10-24.
Red Hat severity: Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-10-18 15:16Z11 DAYS AGO

Last updated

2026-10-24 14:09Z5 DAYS AGO

Reserved

2026-09-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

2c5e8f0fa45f97c49ffce068c5a8b7e66d20c044ab141d7cec3a909cd17ff5cc

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxcae3a2627520c3795b54533c5328b77af3405dbe to < 18866dc1f525f9ee4de7709529d1ae1af8d8e8be, cae3a2627520c3795b54533c5328b77af3405dbe to < afcf362625190c5260530b1d6c7daa98831f6b83, cae3a2627520c3795b54533c5328b77af3405dbe to < 5f23080a625dd7855ab91485c8d691a54a1979f0, cae3a2627520c3795b54533c5328b77af3405dbe to < e02a83bb0b7a203f6a22f55ad5f426765560f811, cae3a2627520c3795b54533c5328b77af3405dbe to < 1a4151e6be57b098b7a5ebfbde58585e83200cdc, 4.3—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/18866dc1f525f9ee4de7709529d1ae1af8d8e8be
git.kernel.orghttps://git.kernel.org/stable/c/afcf362625190c5260530b1d6c7daa98831f6b83
git.kernel.orghttps://git.kernel.org/stable/c/5f23080a625dd7855ab91485c8d691a54a1979f0
git.kernel.orghttps://git.kernel.org/stable/c/e02a83bb0b7a203f6a22f55ad5f426765560f811
git.kernel.orghttps://git.kernel.org/stable/c/1a4151e6be57b098b7a5ebfbde58585e83200cdc

07 Fixed in

Debian 12

linux
No fix yet
linux-6.12
Fixed in 6.12.113-1~deb12u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.113-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.2.9-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.