In the Linux kernel, the following vulnerability has been resolved:
nfsd: validate symlink target length in NFSv4 CREATE
nfsd4_decode_create() accepts an unbounded cr_datalen from the wire for NF4LNK symlink targets, allowing a client to force a kmalloc of up to the maximum RPC payload size (several MiB) per COMPOUND op that persists until compound teardown. The VFS rejects oversized targets with ENAMETOOLONG, but the allocation has already occurred.
Reject cr_datalen == 0 early with nfserr_inval and cr_datalen greater than NFS4_MAXPATHLEN (PATH_MAX) with nfserr_nametoolong to bound the allocation.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade kernel-modules-extra-commonUpgrade kernelUpgrade bpftoolUpgrade kernel-livepatch-6.1.188-233.385Upgrade kernel-develUpgrade python3-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade python3-perfUpgrade perfUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade perf-debuginfo | Oct 13, 2026 | Sep 11, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Sep 30, 2026 | Sep 11, 2026 |
| Redhat_linux | — | No solution exists | Sep 23, 2026 | Sep 11, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 21, 2026 | Sep 11, 2026 |
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