01 Record

CVE-2024-56716

netdevsim: prevent bad user input in nsim_dev_health_break_write()

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

netdevsim: prevent bad user input in nsim_dev_health_break_write()

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

0.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 10.7% 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

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

2024-12-29 08:48Z1 YR AGO

Last updated

2026-05-11 20:57Z5 MO AGO

Reserved

2024-12-27

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-1284Improper Validation of Specified Quantity in InputBase

Data version

5.2

Document digest

d5f5d2000185a53195e270955ca55b6d06cddae4e0ecd3986c2509a1b2627fb1

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux82c93a87bf8bc0cdb5ec2ab99da7d87715ff889f to < 81bdfcd6e6a998e219c9dd49ec7291c2e0594bbc, 82c93a87bf8bc0cdb5ec2ab99da7d87715ff889f to < b3a6daaf7cfb2de37b89fd7a5a2ad4ea9aa3e181, 82c93a87bf8bc0cdb5ec2ab99da7d87715ff889f to < d10321be26ff9e9e912697e9e8448099654ff561, 82c93a87bf8bc0cdb5ec2ab99da7d87715ff889f to < 470c5ecbac2f19b1cdee2a6ce8d5650c3295c94b, 82c93a87bf8bc0cdb5ec2ab99da7d87715ff889f to < 8e9ef6bdf71bf25f4735e0230ce1919de8985835, 82c93a87bf8bc0cdb5ec2ab99da7d87715ff889f to < ee76746387f6233bdfa93d7406990f923641568f, 5.5—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/81bdfcd6e6a998e219c9dd49ec7291c2e0594bbc
git.kernel.orghttps://git.kernel.org/stable/c/b3a6daaf7cfb2de37b89fd7a5a2ad4ea9aa3e181
git.kernel.orghttps://git.kernel.org/stable/c/d10321be26ff9e9e912697e9e8448099654ff561
git.kernel.orghttps://git.kernel.org/stable/c/470c5ecbac2f19b1cdee2a6ce8d5650c3295c94b
git.kernel.orghttps://git.kernel.org/stable/c/8e9ef6bdf71bf25f4735e0230ce1919de8985835
git.kernel.orghttps://git.kernel.org/stable/c/ee76746387f6233bdfa93d7406990f923641568f
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.123-1

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

Debian 13

linux
Fixed in 6.12.8-1

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

Debian 14

linux
Fixed in 6.12.8-1

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