01 Record

CVE-2023-52581

netfilter: nf_tables: fix memleak when more than 255 elements expired

MediumPUBLISHEDCNA: Linux

CNA base score6.3 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

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02 Description

netfilter: nf_tables: fix memleak when more than 255 elements expired

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.1% of scored records. A rank, not a probability.

NVD base score

6.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

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

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

2024-03-02 21:59Z2 YR AGO

Last updated

2026-05-23 15:26Z3 MO AGO

Reserved

2024-03-02

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

6a89808f85ec4fc5f11a786661b9b0e578bf133deb948eb4b45238f6993c56a3

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27 to < 7cf055b43756b10aa2b851c927c940f5ed652125, bbdb3b65aa91aa0a32b212f27780b28987f2d94f to < a995a68e8a3b48533e47c856865d109a1f1a9d01, 448be0774882f95a74fa5eb7519761152add601b to < 09c85f2d21ab6b5acba31a037985b13e8e6565b8, d19e8bf3ea4114dd21fc35da21f398203d7f7df1 to < ef99506eaf1dc31feff1adfcfd68bc5535a22171, ea3eb9f2192e4fc33b795673e56c97a21987f868 to < 7e5d732e6902eb6a37b35480796838a145ae5f07, 5f68718b34a531a556f2f50300ead2862278da26 to < 4aea243b6853d06c1d160a9955b759189aa02b14, 5f68718b34a531a556f2f50300ead2862278da26 to < cf5000a7787cbc10341091d37245a42c119d26c5, 0624f190b5742a1527cd938295caa8dc5281d4cd, 6.4.11 to < 6.5, 6.5—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125
git.kernel.orghttps://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01
git.kernel.orghttps://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8
git.kernel.orghttps://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171
git.kernel.orghttps://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07
git.kernel.orghttps://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14
git.kernel.orghttps://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5

01 Record index

CVE-2023-52581

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2023-52581

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References