HOMEVULNERABILITIESCVE-2026-43125
CRITICAL

CVE-2026-43125

Published: May 6, 2026· Updated: May 8, 2026

9.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.7th

Official Description

In the Linux kernel, the following vulnerability has been resolved:

dlm: validate length in dlm_search_rsb_tree

The len parameter in dlm_dump_rsb_name() is not validated and comes

from network messages. When it exceeds DLM_RESNAME_MAXLEN, it can

cause out-of-bounds write in dlm_search_rsb_tree().

Add length validation to prevent potential buffer overflow.

NVD Source

Technical Analysis

CVE-2026-43125 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882
PATCHhttps://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
PATCHhttps://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
PATCHhttps://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71

All References (4)

→
https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882Patch
→
https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6Patch
→
https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438Patch
→
https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71Patch

Quick Facts

CVE IDCVE-2026-43125
CVSS Score9.8 / 10
SeverityCRITICAL
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 6, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-43125 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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