01 Record

CVE-2026-31665

netfilter: nft_ct: fix use-after-free in timeout object destroy

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

netfilter: nft_ct: fix use-after-free in timeout object destroy

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: 0.12% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.4% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-14.
Red Hat severity: Moderate. 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

2026-04-24 14:45Z4 MO AGO

Last updated

2026-08-05 12:24Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant
CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

8ad823db379c0f39bfe33b7a477d8f9b74726624fa0b5839eac7e29bb13d2370

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux7e0b2b57f01d183e1c84114f1f2287737358d748 to < c458fc1c278a65ad5381083121d39a479973ebed, 7e0b2b57f01d183e1c84114f1f2287737358d748 to < c581e5c8f2b59158f62efe61c1a3dc36189081ff, 7e0b2b57f01d183e1c84114f1f2287737358d748 to < f16fe84879a5280f05ebbcea593a189ba0f3e79a, 7e0b2b57f01d183e1c84114f1f2287737358d748 to < 070abdf1b04325b21a20a2a0c39a2208af107275, 7e0b2b57f01d183e1c84114f1f2287737358d748 to < aa7cfa16f98f8ec3e6d47c34e1a8c1ae4b9b8b77, 7e0b2b57f01d183e1c84114f1f2287737358d748 to < b42aca3660dc2627a29a38131597ca610dc451f9, 7e0b2b57f01d183e1c84114f1f2287737358d748 to < d0983b48c10d1509fd795c155f8b1e832e1369ff, 7e0b2b57f01d183e1c84114f1f2287737358d748 to < f8dca15a1b190787bbd03285304b569631160eda, 4.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/c458fc1c278a65ad5381083121d39a479973ebed
git.kernel.orghttps://git.kernel.org/stable/c/c581e5c8f2b59158f62efe61c1a3dc36189081ff
git.kernel.orghttps://git.kernel.org/stable/c/f16fe84879a5280f05ebbcea593a189ba0f3e79a
git.kernel.orghttps://git.kernel.org/stable/c/070abdf1b04325b21a20a2a0c39a2208af107275
git.kernel.orghttps://git.kernel.org/stable/c/aa7cfa16f98f8ec3e6d47c34e1a8c1ae4b9b8b77
git.kernel.orghttps://git.kernel.org/stable/c/b42aca3660dc2627a29a38131597ca610dc451f9
git.kernel.orghttps://git.kernel.org/stable/c/d0983b48c10d1509fd795c155f8b1e832e1369ff
git.kernel.orghttps://git.kernel.org/stable/c/f8dca15a1b190787bbd03285304b569631160eda
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-31665

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31665

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References