dlm_search_rsb_tree · dlm: validate length
Affects MicrosoftSource GCVE Database
Not known to be exploited · CVSS 9.8 Critical · fixed in 67288113c5e6cf9e659b4065c0ed6f16100e0c71 : patch Microsoft as a priority.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 67288113c5e6cf9e659b4065c0ed6f16100e0c71, 082083c9fbd99422a0370fe2102144a231c9f5d6, 080e5563f878c64e697b89e7439d730d0daad882 +2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been released by vendors such as Red Hat in updated Linux kernel packages. Users should apply the relevant kernel updates as provided by their distribution vendors and reboot affected systems to ensure the patch takes effect. Patch status is confirmed by vendor advisories. No additional mitigation steps are indicated beyond applying the official fix.
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.
References
- nvd.nist.gov/vuln/detail/CVE-2026-43125 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43125.json (opens in a new tab)
- git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71 (opens in a new tab)
- git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438 (opens in a new tab)
- git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6 (opens in a new tab)
- git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2467234 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-43125 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:36767 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:35863 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:35844 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:34095 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:34094 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:33900 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:33899 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25217 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25121 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25120 (opens in a new tab)