01 Record

CVE-2023-53333

netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one

HighPUBLISHEDCNA: Linux

CNA base score8.2 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

View raw JSON

02 Description

netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one

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

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 20.7% of scored records. A rank, not a probability.

NVD base score

7.1 (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:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

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

2025-09-16 16:12Z1 YR AGO

Last updated

2026-08-05 09:13Z2 MO AGO

Reserved

2025-09-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

f373f4aa4cc601d336619f477e9e0167a6144cad3f3d54131c95f57fe82f769e

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux2bc780499aa33311ec0f3e42624dfaa7be0ade5e to < 337fdce450637ea663bc816edc2ba81e5cdad02e, 2bc780499aa33311ec0f3e42624dfaa7be0ade5e to < 9bdcda7abaf22f6453e5b5efb7eb4e524095d5d8, 2bc780499aa33311ec0f3e42624dfaa7be0ade5e to < c052797ac36813419ad3bfa54cb8615db4b41f15, 2bc780499aa33311ec0f3e42624dfaa7be0ade5e to < 5c618daa5038712c4a4ef8923905a2ea1b8836a1, 2bc780499aa33311ec0f3e42624dfaa7be0ade5e to < 26bd1f210d3783a691052c51d76bb8a8bbd24c67, 2bc780499aa33311ec0f3e42624dfaa7be0ade5e to < 8c0980493beed3a80d6329c44ab293dc8c032927, 2bc780499aa33311ec0f3e42624dfaa7be0ade5e to < ff0a3a7d52ff7282dbd183e7fc29a1fe386b0c30, 2.6.26—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/337fdce450637ea663bc816edc2ba81e5cdad02e
git.kernel.orghttps://git.kernel.org/stable/c/9bdcda7abaf22f6453e5b5efb7eb4e524095d5d8
git.kernel.orghttps://git.kernel.org/stable/c/c052797ac36813419ad3bfa54cb8615db4b41f15
git.kernel.orghttps://git.kernel.org/stable/c/5c618daa5038712c4a4ef8923905a2ea1b8836a1
git.kernel.orghttps://git.kernel.org/stable/c/26bd1f210d3783a691052c51d76bb8a8bbd24c67
git.kernel.orghttps://git.kernel.org/stable/c/8c0980493beed3a80d6329c44ab293dc8c032927
git.kernel.orghttps://git.kernel.org/stable/c/ff0a3a7d52ff7282dbd183e7fc29a1fe386b0c30

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 6.4.4-1

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

Debian 14

linux
Fixed in 6.4.4-1

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