Medium severity5.5NVD Advisory· Published Apr 25, 2026· Updated Jun 17, 2026
CVE-2026-31677
CVE-2026-31677
Description
In the Linux kernel, the following vulnerability has been resolved:
crypto: af_alg - limit RX SG extraction by receive buffer budget
Make af_alg_get_rsgl() limit each RX scatterlist extraction to the remaining receive buffer budget.
af_alg_get_rsgl() currently uses af_alg_readable() only as a gate before extracting data into the RX scatterlist. Limit each extraction to the remaining af_alg_rcvbuf(sk) budget so that receive-side accounting matches the amount of data attached to the request.
If skcipher cannot obtain enough RX space for at least one chunk while more data remains to be processed, reject the recvmsg call instead of rounding the request length down to zero.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
103cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.14,<6.12.83
- 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-coords94 versionspkg:apk/chainguard/linux-aws-6.18pkg:apk/chainguard/linux-azure-6.18pkg:apk/chainguard/linux-gcp-6.18pkg:apk/chainguard/linux-qemu-6.18pkg:apk/chainguard/linux-vmware-6.18pkg: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-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
< 6.18.31-r0+ 93 more
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.24-r3
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: >= 4.14.0, < 6.12.83
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1.160000.2.19
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
Patches
Vulnerability mechanics
References
4News mentions
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