Critical severity9.8NVD Advisory· Published May 6, 2026· Updated May 8, 2026
CVE-2026-43125
CVE-2026-43125
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
76- osv-coords75 versionspkg:rpm/almalinux/bpftoolpkg:rpm/almalinux/kernelpkg:rpm/almalinux/kernel-64kpkg:rpm/almalinux/kernel-64k-corepkg:rpm/almalinux/kernel-64k-debugpkg:rpm/almalinux/kernel-64k-debug-corepkg:rpm/almalinux/kernel-64k-debug-develpkg:rpm/almalinux/kernel-64k-debug-devel-matchedpkg:rpm/almalinux/kernel-64k-debug-modulespkg:rpm/almalinux/kernel-64k-debug-modules-corepkg:rpm/almalinux/kernel-64k-debug-modules-extrapkg:rpm/almalinux/kernel-64k-develpkg:rpm/almalinux/kernel-64k-devel-matchedpkg:rpm/almalinux/kernel-64k-modulespkg:rpm/almalinux/kernel-64k-modules-corepkg:rpm/almalinux/kernel-64k-modules-extrapkg:rpm/almalinux/kernel-abi-stablelistspkg:rpm/almalinux/kernel-corepkg:rpm/almalinux/kernel-cross-headerspkg:rpm/almalinux/kernel-debugpkg:rpm/almalinux/kernel-debug-corepkg:rpm/almalinux/kernel-debug-develpkg:rpm/almalinux/kernel-debug-devel-matchedpkg:rpm/almalinux/kernel-debug-modulespkg:rpm/almalinux/kernel-debug-modules-corepkg:rpm/almalinux/kernel-debug-modules-extrapkg:rpm/almalinux/kernel-debug-uki-virtpkg:rpm/almalinux/kernel-develpkg:rpm/almalinux/kernel-devel-matchedpkg:rpm/almalinux/kernel-docpkg:rpm/almalinux/kernel-headerspkg:rpm/almalinux/kernel-modulespkg:rpm/almalinux/kernel-modules-corepkg:rpm/almalinux/kernel-modules-extrapkg:rpm/almalinux/kernel-rtpkg:rpm/almalinux/kernel-rt-64kpkg:rpm/almalinux/kernel-rt-64k-corepkg:rpm/almalinux/kernel-rt-64k-debugpkg:rpm/almalinux/kernel-rt-64k-debug-corepkg:rpm/almalinux/kernel-rt-64k-debug-develpkg:rpm/almalinux/kernel-rt-64k-debug-modulespkg:rpm/almalinux/kernel-rt-64k-debug-modules-corepkg:rpm/almalinux/kernel-rt-64k-debug-modules-extrapkg:rpm/almalinux/kernel-rt-64k-develpkg:rpm/almalinux/kernel-rt-64k-modulespkg:rpm/almalinux/kernel-rt-64k-modules-corepkg:rpm/almalinux/kernel-rt-64k-modules-extrapkg:rpm/almalinux/kernel-rt-corepkg:rpm/almalinux/kernel-rt-debugpkg:rpm/almalinux/kernel-rt-debug-corepkg:rpm/almalinux/kernel-rt-debug-develpkg:rpm/almalinux/kernel-rt-debug-modulespkg:rpm/almalinux/kernel-rt-debug-modules-corepkg:rpm/almalinux/kernel-rt-debug-modules-extrapkg:rpm/almalinux/kernel-rt-develpkg:rpm/almalinux/kernel-rt-modulespkg:rpm/almalinux/kernel-rt-modules-corepkg:rpm/almalinux/kernel-rt-modules-extrapkg:rpm/almalinux/kernel-toolspkg:rpm/almalinux/kernel-tools-libspkg:rpm/almalinux/kernel-tools-libs-develpkg:rpm/almalinux/kernel-uki-virtpkg:rpm/almalinux/kernel-uki-virt-addonspkg:rpm/almalinux/kernel-zfcpdumppkg:rpm/almalinux/kernel-zfcpdump-corepkg:rpm/almalinux/kernel-zfcpdump-develpkg:rpm/almalinux/kernel-zfcpdump-devel-matchedpkg:rpm/almalinux/kernel-zfcpdump-modulespkg:rpm/almalinux/kernel-zfcpdump-modules-corepkg:rpm/almalinux/kernel-zfcpdump-modules-extrapkg:rpm/almalinux/libperfpkg:rpm/almalinux/perfpkg:rpm/almalinux/python3-perfpkg:rpm/almalinux/rtlapkg:rpm/almalinux/rv
< 4.18.0-553.132.1.el8_10+ 74 more
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.rt7.473.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 4.18.0-553.132.1.el8_10
- (no CPE)range: < 5.14.0-687.15.1.el9_8
- (no CPE)range: < 5.14.0-687.15.1.el9_8
Patches
Vulnerability mechanics
References
4News mentions
1- Patch Tuesday - May 2026Rapid7 Blog · May 13, 2026