01 Record

CVE-2024-27018

netfilter: br_netfilter: skip conntrack input hook for promisc packets

HighPUBLISHEDCNA: Linux

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

View raw JSON

02 Description

netfilter: br_netfilter: skip conntrack input hook for promisc packets

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

0.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 50.4% 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 2026-08-04.

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

2024-05-01 05:30Z2 YR AGO

Last updated

2026-08-05 11:29Z2 MO AGO

Reserved

2024-02-19

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:N/I:L/A:H

Weaknesses

CWE-358Improperly Implemented Security Check for StandardBase

Data version

5.2

Document digest

080e33bd0c2fb63ad04301cd977fdc7017c2cf77665188162c61fc6af6e31f29

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux7c3f28599652acf431a2211168de4a583f30b6d5 to < dceb683ab87ca3666a9bb5c0158528b646faedc4, 2b1414d5e94e477edff1d2c79030f1d742625ea0 to < b13db0d16bc7b2a52abcf5cb71334f63faa5dbd6, 80cd0487f630b5382734997c3e5e3003a77db315 to < 3f59ac29dea0921637053908fe99268d157bbb9d, 62e7151ae3eb465e0ab52a20c941ff33bb6332e9 to < 43193174510ea4f3ce09b796e559a2fd9f148615, 62e7151ae3eb465e0ab52a20c941ff33bb6332e9 to < 751de2012eafa4d46d8081056761fa0e9cc8a178, cb734975b0ffa688ff6cc0eed463865bf07b6c01, 5.15.151 to < 5.15.157, 6.1.81 to < 6.1.88, 6.6.21 to < 6.6.29, 6.7.9 to < 6.8, 6.8—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/dceb683ab87ca3666a9bb5c0158528b646faedc4
git.kernel.orghttps://git.kernel.org/stable/c/b13db0d16bc7b2a52abcf5cb71334f63faa5dbd6
git.kernel.orghttps://git.kernel.org/stable/c/3f59ac29dea0921637053908fe99268d157bbb9d
git.kernel.orghttps://git.kernel.org/stable/c/43193174510ea4f3ce09b796e559a2fd9f148615
git.kernel.orghttps://git.kernel.org/stable/c/751de2012eafa4d46d8081056761fa0e9cc8a178
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/

07 Fixed in

Debian 12

linux
Fixed in 6.1.90-1

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

Debian 13

linux
Fixed in 6.8.9-1

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

Debian 14

linux
Fixed in 6.8.9-1

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