Medium severity5.5NVD Advisory· Published Apr 25, 2026· Updated May 6, 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
89cpe: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-coords80 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: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/rv
< 6.18.31-r0+ 79 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: < 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
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- (no CPE)range: < 6.12.0-211.7.3.el10_2
- (no CPE)range: < 6.12.0-211.7.3.el10_2
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- (no CPE)range: < 6.12.0-211.7.3.el10_2
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- (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
Patches
Vulnerability mechanics
References
4News mentions
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