Critical severity9.8NVD Advisory· Published May 8, 2026· Updated Jun 19, 2026
CVE-2026-43341
CVE-2026-43341
Description
In the Linux kernel, the following vulnerability has been resolved:
net/ipv6: ioam6: prevent schema length wraparound in trace fill
ioam6_fill_trace_data() stores the schema contribution to the trace length in a u8. With bit 22 enabled and the largest schema payload, sclen becomes 1 + 1020 / 4, wraps from 256 to 0, and bypasses the remaining-space check. __ioam6_fill_trace_data() then positions the write cursor without reserving the schema area but still copies the 4-byte schema header and the full schema payload, overrunning the trace buffer.
Keep sclen in an unsigned int so the remaining-space check and the write cursor calculation both see the full schema length.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
138cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<6.1.168
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
- (no CPE)
- osv-coords129 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/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP7pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_16&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-livepatch-SLE15-SP7_Update_16&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-obs-qa&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-obs-qa&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
>= 5.15.0, < 5.15.210+ 128 more
- (no CPE)range: >= 5.15.0, < 5.15.210
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.12.0-211.31.1.el10_2
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.4.0-47.1
- (no CPE)range: < 6.4.0-47.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.53.60.1.150700.17.35.4
- (no CPE)range: < 6.12.0-160000.34.1.160000.2.15
- (no CPE)range: < 6.12.0-160000.34.1.160000.2.15
- (no CPE)range: < 6.4.0-47.1.21.24
- (no CPE)range: < 6.4.0-47.1.21.24
- (no CPE)range: < 6.12.0-160000.34.1.160000.2.15
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-47.1
- (no CPE)range: < 6.4.0-47.1
- (no CPE)range: < 1-150700.1.5.2
- (no CPE)range: < 1-150700.15.3.2
- (no CPE)range: < 6.4.0-150700.53.60.2
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.7.59.2
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-47.1
- (no CPE)range: < 6.4.0-47.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.7.59.2
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.4.0-150700.7.59.1
- (no CPE)range: < 6.4.0-150700.53.60.1
- (no CPE)range: < 6.12.0-160000.34.1
- (no CPE)range: < 6.12.0-160000.34.1
Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/184d2e9db27c0f76226b5cad16fe29510a5d2280nvdPatch
- git.kernel.org/stable/c/5e67ba9bb531e1ec6599a82a065dea9040b9ce50nvdPatch
- git.kernel.org/stable/c/77695a69baca9b99d95fad09fc78c2318736604fnvdPatch
- git.kernel.org/stable/c/d1b041080086e91d3733a5438a8c51ad5d3d8e09nvdPatch
- git.kernel.org/stable/c/d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7dnvdPatch
- git.kernel.org/stable/c/e96d48b37708d53cbdc47f6f60b0714fc4a5f596nvdPatch
- git.kernel.org/stable/c/d3a1fb2ca323d7a4e10ab3afbfa25e6d8921e4f2nvd
News mentions
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