01 Record

CVE-2023-53304

netfilter: nft_set_rbtree: fix overlap expiration walk

MediumPUBLISHEDCNA: Linux

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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02 Description

netfilter: nft_set_rbtree: fix overlap expiration walk

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 ImpactpartialSuccessful exploitation gives limited 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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 5.0% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. 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

2025-09-16 16:11Z1 YR AGO

Last updated

2026-05-23 15:28Z5 MO AGO

Reserved

2025-09-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

CWE-476NULL Pointer DereferenceBase
CWE-772Missing Release of Resource after Effective LifetimeBase

Data version

5.2

Document digest

5ac58c2806568e368ce25f496fa58cc8e217fc10bfe1630ee67f16ab35d4e005

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux7ab87a326f20c52ff4d9972052d085be951c704b to < 8284a79136c384059e85e278da2210b809730287, 181859bdfb9734aca449512fccaee4cacce64aed to < acaee227cf79c45a5d2d49c3e9a66333a462802c, 4aacf3d78424293e318c616016865380b37b9cc5 to < 893cb3c3513cf661a0ff45fe0cfa83fe27131f76, 2bf1435fa19d2c58054391b3bba40d5510a5758c to < 50cbb9d195c197af671869c8cadce3bd483735a0, 318cb24a4c3fce8140afaf84e4d45fcb76fb280b to < 89a4d1a89751a0fbd520e64091873e19cc0979e8, c9e6978e2725a7d4b6cd23b2facd3f11422c0643 to < cd66733932399475fe933cb3ec03e687ed401462, c9e6978e2725a7d4b6cd23b2facd3f11422c0643 to < f718863aca469a109895cb855e6b81fff4827d71, 5.10.166 to < 5.10.190, 5.15.91 to < 5.15.124, 6.1.9 to < 6.1.43, 6.2—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/8284a79136c384059e85e278da2210b809730287
git.kernel.orghttps://git.kernel.org/stable/c/acaee227cf79c45a5d2d49c3e9a66333a462802c
git.kernel.orghttps://git.kernel.org/stable/c/893cb3c3513cf661a0ff45fe0cfa83fe27131f76
git.kernel.orghttps://git.kernel.org/stable/c/50cbb9d195c197af671869c8cadce3bd483735a0
git.kernel.orghttps://git.kernel.org/stable/c/89a4d1a89751a0fbd520e64091873e19cc0979e8
git.kernel.orghttps://git.kernel.org/stable/c/cd66733932399475fe933cb3ec03e687ed401462
git.kernel.orghttps://git.kernel.org/stable/c/f718863aca469a109895cb855e6b81fff4827d71

07 Fixed in

Debian 12

linux
Fixed in 6.1.52-1

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

Debian 13

linux
Fixed in 6.4.11-1

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

Debian 14

linux
Fixed in 6.4.11-1

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