dlm: validate length in dlm_search_rsb_tree
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.
CVE-2026-43125
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-43125
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7210cb7a72a22303cdb225bd1aea28697a17bbae",
"lessThan": "2deafd015ea9a0e75ee5764e20eb1e16bd73efd8",
"versionType": "git"
},
{
"status": "affected",
"version": "7210cb7a72a22303cdb225bd1aea28697a17bbae",
"lessThan": "67288113c5e6cf9e659b4065c0ed6f16100e0c71",
"versionType": "git"
},
{
"status": "affected",
"version": "7210cb7a72a22303cdb225bd1aea28697a17bbae",
"lessThan": "082083c9fbd99422a0370fe2102144a231c9f5d6",
"versionType": "git"
},
{
"status": "affected",
"version": "7210cb7a72a22303cdb225bd1aea28697a17bbae",
"lessThan": "5f053a2e7209d326cbbc07738fa6d6893d307438",
"versionType": "git"
},
{
"status": "affected",
"version": "7210cb7a72a22303cdb225bd1aea28697a17bbae",
"lessThan": "080e5563f878c64e697b89e7439d730d0daad882",
"versionType": "git"
}
],
"programFiles": [
"fs/dlm/lock.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.16",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.6",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/dlm/lock.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43125
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #46262 · Revision 1
- Added to Heist Feed
- Publisher date