{"id":"AZL-100310","summary":"CVE-2026-89699 affecting package kernel 6.6.150.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: validate symlink target length in NFSv4 CREATE\n\nnfsd4_decode_create() accepts an unbounded cr_datalen from the wire for\nNF4LNK symlink targets, allowing a client to force a kmalloc of up to\nthe maximum RPC payload size (several MiB) per COMPOUND op that persists\nuntil compound teardown.  The VFS rejects oversized targets with\nENAMETOOLONG, but the allocation has already occurred.\n\nReject cr_datalen == 0 early with nfserr_inval and cr_datalen greater\nthan NFS4_MAXPATHLEN (PATH_MAX) with nfserr_nametoolong to bound the\nallocation.","modified":"2026-09-13T06:06:36Z","published":"2026-09-11T20:19:57Z","upstream":["CVE-2026-89699"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89699"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.150.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-100310.json"}}],"schema_version":"1.9.0"}