CVE-2026-43125 (GCVE-0-2026-43125)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-07-02 12:05
VLAI
Title
dlm: validate length in dlm_search_rsb_tree
Summary
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.
CWE
  • CWE-130 - Improper Handling of Length Parameter Inconsistency
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 67288113c5e6cf9e659b4065c0ed6f16100e0c71 (git)
Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 082083c9fbd99422a0370fe2102144a231c9f5d6 (git)
Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 5f053a2e7209d326cbbc07738fa6d6893d307438 (git)
Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 080e5563f878c64e697b89e7439d730d0daad882 (git)
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Linux Linux Affected: 3.4
Unaffected: 0 , < 3.4 (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux BaseOS (v. 8)     cpe:/o:redhat:enterprise_linux:8::baseos
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Red Hat Red Hat Enterprise Linux BaseOS AUS (v.8.6)     cpe:/o:redhat:rhel_aus:8.6::baseos
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Red Hat Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)     cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
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Red Hat Red Hat Enterprise Linux BaseOS E4S (v.9.2)     cpe:/o:redhat:rhel_e4s:9.2::baseos
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Red Hat Red Hat Enterprise Linux BaseOS EUS (v.9.6)     cpe:/o:redhat:rhel_eus:9.6::baseos
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Red Hat Red Hat Enterprise Linux BaseOS (v. 9)     cpe:/o:redhat:enterprise_linux:9::baseos
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Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Enterprise Linux NFV (v. 8)     cpe:/a:redhat:enterprise_linux:8::nfv
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Red Hat Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::nfv
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Red Hat Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::nfv
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Red Hat Red Hat Enterprise Linux Real Time for NFV (v. 9)     cpe:/a:redhat:enterprise_linux:9::nfv
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Red Hat Red Hat Enterprise Linux RT (v. 8)     cpe:/a:redhat:enterprise_linux:8::realtime
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Red Hat Red Hat Enterprise Linux Real Time E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::realtime
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Red Hat Red Hat Enterprise Linux Real Time EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::realtime
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Red Hat Red Hat Enterprise Linux Real Time (v. 9)     cpe:/a:redhat:enterprise_linux:9::realtime
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Show details on NVD website

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When it exceeds DLM_RESNAME_MAXLEN, it can\\ncause out-of-bounds write in dlm_search_rsb_tree().\\n\\nAdd length validation to prevent potential buffer overflow.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/dlm/lock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"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\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/dlm/lock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.4\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.4\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.75\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.16\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.6\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"affectedData\":[{\"vendor\":\"Red 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(v.8.6)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:rhel_eus_long_life:8.6::baseos\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux BaseOS E4S (v.9.2)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:rhel_e4s:9.2::baseos\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux BaseOS EUS (v.9.6)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:rhel_eus:9.6::baseos\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux BaseOS (v. 9)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:9::baseos\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux CRB (v. 8)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:8::crb\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat CodeReady Linux Builder EUS (v.9.6)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:rhel_eus:9.6::crb\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:9::crb\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux NFV (v. 8)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:8::nfv\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:rhel_e4s:9.2::nfv\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:rhel_eus:9.6::nfv\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux Real Time for NFV (v. 9)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:9::nfv\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux RT (v. 8)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:8::realtime\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux Real Time E4S (v.9.2)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:rhel_e4s:9.2::realtime\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux Real Time EUS (v.9.6)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:rhel_eus:9.6::realtime\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux Real Time (v. 9)\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:enterprise_linux:9::realtime\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 7\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:7\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 9\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:9\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 10\",\"defaultStatus\":\"unaffected\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:10\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Enterprise Linux 6\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:/o:redhat:enterprise_linux:6\"]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-130\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.4\",\"versionEndExcluding\":\"6.12.75\",\"matchCriteriaId\":\"29152BBE-96F9-4D35-A99C-E61CF2C0DDEB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.16\",\"matchCriteriaId\":\"B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.6\",\"matchCriteriaId\":\"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:25120\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:25121\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:25217\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:33899\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:33900\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:34094\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2026:34095\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://access.redhat.com/security/cve/CVE-2026-43125\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2467234\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43125.json\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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