High severity7.8NVD Advisory· Published Jul 19, 2026· Updated Oct 16, 2026
CVE-2026-64002
CVE-2026-64002
Description
In the Linux kernel, the following vulnerability has been resolved:
ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()
ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon.
Only after unregister_net_sysctl_table() we can be sure no threads can possibly use the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
96- osv-coords89 versionspkg:rpm/almalinux/kernel-rt-64k-debug-develpkg:rpm/almalinux/kernel-zfcpdump-modules-corepkg:rpm/almalinux/kernel-zfcpdump-modulespkg:rpm/almalinux/kernel-debug-corepkg:rpm/almalinux/kernel-64kpkg:rpm/almalinux/kernel-64k-debug-corepkg:rpm/almalinux/kernel-docpkg:rpm/almalinux/kernel-modules-corepkg:rpm/almalinux/kernel-rt-64k-debug-modulespkg:rpm/almalinux/kernel-rt-64k-modulespkg:rpm/almalinux/kernel-zfcpdumppkg:rpm/almalinux/kernel-zfcpdump-develpkg:rpm/almalinux/kernel-rt-modules-extrapkg:rpm/almalinux/kernel-rt-64k-debugpkg:rpm/almalinux/kernel-rt-debug-develpkg:rpm/almalinux/kernel-rt-debug-modules-extrapkg:rpm/almalinux/rtlapkg:rpm/almalinux/kernel-64k-debug-modulespkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-corepkg:rpm/almalinux/kernel-rt-64k-debug-corepkg:linux/kernelpkg:rpm/almalinux/kernel-64k-debugpkg:rpm/almalinux/kernel-64k-develpkg:rpm/almalinux/kernel-64k-devel-matchedpkg:rpm/almalinux/kernel-64k-modules-corepkg:rpm/almalinux/kernel-cross-headerspkg:rpm/almalinux/kernel-rt-64k-debug-modules-corepkg:rpm/almalinux/kernel-rt-debug-corepkg:rpm/almalinux/kernel-rt-debug-modulespkg:rpm/almalinux/perfpkg:rpm/almalinux/bpftoolpkg: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-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-rt-64k-develpkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-64k-debug-modules-corepkg:rpm/almalinux/kernel-rt-64k-modules-corepkg:rpm/almalinux/kernel-zfcpdump-devel-matchedpkg:rpm/almalinux/kernel-modules-extrapkg:rpm/almalinux/kernel-64k-debug-develpkg:rpm/almalinux/kernel-rt-64k-corepkg:rpm/almalinux/kernel-rt-64k-debug-modules-extrapkg:rpm/almalinux/kernel-rt-develpkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/kernel-64k-corepkg:rpm/almalinux/kernel-debug-modules-corepkg:rpm/almalinux/kernel-develpkg:rpm/almalinux/kernel-rt-64kpkg:rpm/almalinux/kernelpkg:rpm/almalinux/kernel-64k-debug-devel-matchedpkg:rpm/almalinux/kernel-debug-modulespkg:rpm/almalinux/kernel-rt-64k-modules-extrapkg:rpm/almalinux/kernel-rt-debug-modules-corepkg:rpm/almalinux/kernel-toolspkg:rpm/almalinux/kernel-tools-libspkg:rpm/almalinux/kernel-uki-virt-addonspkg:rpm/almalinux/libperfpkg:rpm/almalinux/kernel-debug-modules-extrapkg:rpm/almalinux/kernel-tools-libs-develpkg:rpm/almalinux/kernel-64k-debug-modules-extrapkg:rpm/almalinux/kernel-debug-develpkg:rpm/almalinux/kernel-debug-uki-virtpkg:rpm/almalinux/kernel-rt-debugpkg:rpm/almalinux/kernel-rt-modulespkg:rpm/almalinux/kernel-rt-corepkg:rpm/almalinux/kernel-zfcpdump-modules-extrapkg:rpm/almalinux/kernel-abi-stablelistspkg:rpm/almalinux/kernel-debugpkg:rpm/almalinux/kernel-uki-virtpkg:rpm/almalinux/kernel-zfcpdump-corepkg:rpm/almalinux/kernel-64k-modulespkg:rpm/almalinux/kernel-debug-devel-matchedpkg:rpm/almalinux/kernel-rtpkg:rpm/almalinux/python3-perfpkg:rpm/almalinux/kernel-rt-modules-corepkg:rpm/almalinux/rvpkg:rpm/almalinux/kernel-64k-modules-extrapkg:rpm/almalinux/kernel-modulespkg:rpm/almalinux/kernel-devel-matchedpkg:rpm/almalinux/kernel-headers
< 5.14.0-687.44.1.el9_8+ 88 more
- (no CPE)range: < 5.14.0-687.44.1.el9_8
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- (no CPE)range: < 5.14.0-687.44.1.el9_8
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- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: >= 3.16.0, < 5.10.259
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
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- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 4.18.0-553.164.1.el8_10
- (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: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
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- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
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- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
- (no CPE)range: < 5.14.0-687.44.1.el9_8
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=3.16,<5.10.259
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208nvdPatch
- git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996nvdPatch
- git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048dnvdPatch
- git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10nvdPatch
- git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57nvdPatch
- git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06cnvdPatch
- git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76nvdPatch
- git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913bnvdPatch
News mentions
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