01 Record

CVE-2026-53212

netfilter: nft_tunnel: fix use-after-free on 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

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02 Description

netfilter: nft_tunnel: fix use-after-free on object destroy

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 8.9% 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 2026-10-19.

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

2026-06-25 08:39Z4 MO AGO

Last updated

2026-10-19 19:57Z10 DAYS AGO

Reserved

2026-06-09

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

Data version

5.2

Document digest

12749a979d2cd1b100e576d13f925911251f10ba942d3cbc1b6af3eccbbe083f

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxaf308b94a2a4a5a27bec9028354c4df444a7c8ba to < 349df61526d2e39decc685d246202e3e284cfe05, af308b94a2a4a5a27bec9028354c4df444a7c8ba to < 55b79b1ae42372012413ce0413181d26679b17ef, af308b94a2a4a5a27bec9028354c4df444a7c8ba to < 5e9ee18b27fde88cb6148202b33916c66693fe82, af308b94a2a4a5a27bec9028354c4df444a7c8ba to < 8767fe4079affa74314d7eb3220e700150289842, af308b94a2a4a5a27bec9028354c4df444a7c8ba to < fda6573a46ad24f35348e024905ee5bdf729797e, af308b94a2a4a5a27bec9028354c4df444a7c8ba to < 941d7394efda5e054e2d6f3e0dd0f6a9ba19aaa3, af308b94a2a4a5a27bec9028354c4df444a7c8ba to < f9a0e4b61054cde89a2a77845293c726cc07cc43, af308b94a2a4a5a27bec9028354c4df444a7c8ba to < c32b26aaa2f9216520a38b3f4bfeec846eb3eb8a, 4.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/349df61526d2e39decc685d246202e3e284cfe05
git.kernel.orghttps://git.kernel.org/stable/c/55b79b1ae42372012413ce0413181d26679b17ef
git.kernel.orghttps://git.kernel.org/stable/c/5e9ee18b27fde88cb6148202b33916c66693fe82
git.kernel.orghttps://git.kernel.org/stable/c/8767fe4079affa74314d7eb3220e700150289842
git.kernel.orghttps://git.kernel.org/stable/c/fda6573a46ad24f35348e024905ee5bdf729797e
git.kernel.orghttps://git.kernel.org/stable/c/941d7394efda5e054e2d6f3e0dd0f6a9ba19aaa3
git.kernel.orghttps://git.kernel.org/stable/c/f9a0e4b61054cde89a2a77845293c726cc07cc43
git.kernel.orghttps://git.kernel.org/stable/c/c32b26aaa2f9216520a38b3f4bfeec846eb3eb8a
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-784472.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.176-1

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

Debian 13

linux
Fixed in 6.12.94-1

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

Debian 14

linux
Fixed in 7.0.13-1

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