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CVE-2024-35865

17
FAUCET Score

CVE-2024-35865 addresses a potential Use-After-Free (UAF) vulnerability in the Linux kernel's SMB client, specifically within the smb2_is_valid_oplock_break() function. This flaw, categorized as CWE-416, affects Linux kernel versions and could lead to a denial of service. With a CVSS score of 5.5 (Medium), it requires local access and low privileges, but does not involve user interaction, impacting system availability. Currently, there is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.1.85CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.6.26CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.7, < 6.8.5CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
6.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 60th percentile among its peer group of 15,940 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-503.11.1.el9_5
View patch
ubuntupatch availablevia ubuntu_usn
Product: linux-hwe-5.15 (focal)Fixed in: 5.15.0-186.196~20.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-lowlatency-hwe-5.15 (focal)Fixed in: 5.15.0-184.194~20.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux (jammy)Fixed in: 5.15.0-186.196
ubuntupatch availablevia ubuntu_usn
Product: linux-gcp (jammy)Fixed in: 5.15.0-1112.122
ubuntupatch availablevia ubuntu_usn
Product: linux-gcp-fips (jammy)Fixed in: 5.15.0-1112.122+fips1
ubuntupatch availablevia ubuntu_usn
Product: linux-gke (jammy)Fixed in: 5.15.0-1108.114
ubuntupatch availablevia ubuntu_usn
Product: linux-gkeop (jammy)Fixed in: 5.15.0-1095.103
ubuntupatch availablevia ubuntu_usn
Product: linux-nvidia-tegra-5.15 (focal)Fixed in: 5.15.0-1064.66~20.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-lowlatency (jammy)Fixed in: 5.15.0-184.194
ubuntupatch availablevia ubuntu_usn
Product: linux-realtime (jammy)Fixed in: 5.15.0-1111.120
ubuntupatch availablevia ubuntu_usn
Product: linux-xilinx-zynqmp (jammy)Fixed in: 5.15.0-1075.79
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-fde (jammy)Fixed in: 5.15.0-1117.126
ubuntupatch availablevia ubuntu_usn
Product: linux-azure (jammy)Fixed in: 5.15.0-1117.126
ubuntupatch availablevia ubuntu_usn
Product: linux-oracle (jammy)Fixed in: 5.15.0-1109.115
ubuntupatch availablevia ubuntu_usn
Product: linux-kvm (jammy)Fixed in: 5.15.0-1104.109
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (6)

ubuntuUSN-8610-1

Linux kernel (Azure CVM) vulnerabilities

Jul 24, 2026
ubuntuUSN-8575-3

Linux kernel vulnerabilities

Jul 24, 2026
ubuntuUSN-8576-1

Linux kernel (NVIDIA Tegra) vulnerabilities

Jul 21, 2026
ubuntuUSN-8575-1

Linux kernel vulnerabilities

Jul 21, 2026
redhatCVE-2024-35865Low

kernel: smb: client: fix potential UAF in smb2_is_valid_oplock_break()

May 19, 2024
microsoft2024-May/CVE-2024-35865Moderate

smb: client: fix potential UAF in smb2_is_valid_oplock_break()

May 14, 2024

References

git.kernel.org / stable/c/21fed37d2bdcde33453faf61d3d4d96c355f04bd
Patch
git.kernel.org / stable/c/22863485a4626ec6ecf297f4cc0aef709bc862e4
Patch
git.kernel.org / stable/c/3dba0e5276f131e36d6d8043191d856f49238628
Patch
git.kernel.org / stable/c/84488466b7a69570bdbf76dd9576847ab97d54e7
Patch
git.kernel.org / stable/c/a710ef9e974f18232d2b9b19c90eda1a1167b2d4