Critical severity9.8NVD Advisory· Published Jul 25, 2026· Updated Oct 19, 2026
CVE-2026-64387
CVE-2026-64387
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix query directory replay double-free
A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_init() fails before the next send, cleanup retains the previous buffer type and frees that response again.
Reset response bookkeeping before each attempt to prevent the stale free.
Affected products
99cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.6.32,<6.6.145
- cpe:2.3:o:linux:linux_kernel:6.8:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.8:rc7:*:*:*:*:*:*
- (no CPE)
- osv-coords90 versionspkg:linux/kernelpkg: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/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
< 6.6.145+ 89 more
- (no CPE)range: < 6.6.145
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-211.51.1.el10_2
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1.160000.2.22
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 7.1.7-1.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/00b0fa425941438b664950a8ee65dfba2def4336nvdPatch
- git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994nvdPatch
- git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fdenvdPatch
- git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98nvdPatch
- git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7nvdPatch
News mentions
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