High severity7.1NVD Advisory· Published Jul 25, 2026· Updated Oct 19, 2026
CVE-2026-64379
CVE-2026-64379
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: mask server-provided mode to 07777 in modefromsid
When modefromsid is active, parse_dacl() applies the server-provided sub_auth[2] value from the NFS mode SID to cf_mode without masking to 07777. Apply the correct masking, same as in the read path.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
82- osv-coords78 versionspkg:linux/kernelpkg: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-modules-extra-matchedpkg: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/rvpkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweed
>= 5.4.0, < 5.10.261+ 77 more
- (no CPE)range: >= 5.4.0, < 5.10.261
- (no CPE)range: < 4.18.0-553.157.1.el8_10
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 6.12.0-211.49.1.el10_2
- (no CPE)range: < 7.1.7-1.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78nvdPatch
- git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14nvdPatch
- git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7dnvdPatch
- git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0dnvdPatch
- git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151nvdPatch
- git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00efnvdPatch
- git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94nvdPatch
- git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954nvdPatch
News mentions
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