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CVE-2024-42271

22
FAUCET Score

CVE-2024-42271 is a use-after-free vulnerability in the Linux kernel's net/iucv component, specifically within the iucv_sock_close() function. This flaw arises from a race condition where the iucv->path indicator is not atomically updated, allowing iucv_sock_close() to access a path that has already been freed. It affects Linux kernel versions and has a CVSS score of 7.8 (HIGH), indicating a local attack vector with low complexity that could lead to high impact on confidentiality, integrity, and availability, potentially causing a kernel panic. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.4, < 4.19.320CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.282CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.224CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.165CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.104CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
14.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 46th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (25)

autodeskpatch availablevia llm_extracted
View patch
codesyspatch availablevia llm_extracted
View patch
esphomepatch availablevia llm_extracted
View patch
freepbxpatch availablevia llm_extracted
View patch
honeywellpatch availablevia llm_extracted
View patch
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.167.1-1 on CBL Mariner 2.0Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.164.1-1 on CBL Mariner 2.0Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.47.1-1 on Azure Linux 3.0Fixed in: 6.6.47.1-1
microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.43.1-7 on Azure Linux 3.0Fixed in: 6.6.47.1-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 6.6.47.1-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 6.6.47.1-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: 17207-16823Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: 19670-17086Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: 17250-17086Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: 17651-17084Fixed in: 6.6.47.1-1
microsoftpatch availablevia msrc
Product: 17661-17084Fixed in: 6.6.47.1-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: kernel-rt-0:5.14.0-284.92.1.rt14.377.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: kernel-0:5.14.0-427.47.1.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: kernel-0:5.14.0-284.92.1.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-503.11.1.el9_5
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (8)

honeywellllm-honeywell-c82b5cfda9df97a3CRITICAL

HP ThinPro 8.1 SP8 Security Updates

Oct 27, 2025
freepbxllm-freepbx-e54908c7967265f6CRITICAL

HP ThinPro 8.1 SP8 Security Updates

Oct 27, 2025
autodeskllm-autodesk-c365b674a2ff5a3aCRITICAL

HP ThinPro 8.1 SP8 Security Updates

Oct 27, 2025
esphomellm-esphome-ed450ce9fd6a7380CRITICAL

HP ThinPro 8.1 SP7 Security Updates

Jun 3, 2025
codesysllm-codesys-fe85e88fbae25bb9CRITICAL

HP ThinPro 8.1 SP7 Security Updates

Jun 3, 2025
microsoft2024-Oct/CVE-2024-42271

CVE-2024-42271

Oct 8, 2024
redhatCVE-2024-42271Moderate

kernel: net/iucv: fix use after free in iucv_sock_close()

Aug 17, 2024
microsoft2024-Aug/CVE-2024-42271Important

net/iucv: fix use after free in iucv_sock_close()

Aug 13, 2024

References

git.kernel.org / stable/c/01437282fd3904810603f3dc98d2cac6b8b6fc84
Patch
git.kernel.org / stable/c/37652fbef9809411cea55ea5fa1a170e299efcd0
Patch
git.kernel.org / stable/c/69620522c48ce8215e5eb55ffbab8cafee8f407d
Patch
git.kernel.org / stable/c/84f40b46787ecb67c7ad08a5bb1376141fa10c01
Patch
git.kernel.org / stable/c/8b424c9e44111c5a76f41c6b741f8d4c4179d876
Patch
git.kernel.org / stable/c/ac758e1f663fe9bc64f6b47212a2aa18697524f5
Patch
git.kernel.org / stable/c/c65f72eec60a34ace031426e04e9aff8e5f04895
Patch
git.kernel.org / stable/c/f558120cd709682b739207b48cf7479fd9568431
Patch
lists.debian.org / debian-lts-announce/2025/01/msg00001.html