CVE-2026-89711

A flaw was found in the Linux kernel's Network File System Daemon NFSD. An invalid assumption in the nfsdmodecheck function regarding directory lookup capabilities during NFS reexport could lead to a null pointer dereference. A remote attacker could exploit this by performing a LOOKUP operation o...

CVE-2026-89711

In the Linux kernel, the following vulnerability has been resolved: NFSD: remove flawed WARNONONCE from nfsdmodecheck The header for commit e75b23f9e323 "nfsd: check dcanlookup in fhverify of directories" details the assumption that justified adding the WARNONONCE to nfsdmodecheck, that assumptio...

EUVD-2026-76623

In the Linux kernel, the following vulnerability has been resolved: NFSD: remove flawed WARNONONCE from nfsdmodecheck The header for commit e75b23f9e323 "nfsd: check dcanlookup in fhverify of directories" details the assumption that justified adding the WARNONONCE to nfsdmodecheck, that assumptio...

CVE-2026-89711

CVE-2026-89711 affects the Linux kernel's NFSD (NFS Daemon) subsystem. A flawed WARN_ON_ONCE in nfsd_mode_check() was added based on an invalid assumption that i_op->lookup is always present. When NFSD exports an NFS filesystem (NFS reexport), it is possible to encounter a dentry lacking i_op-...

CVE-2026-89711 NFSD: remove flawed WARN_ON_ONCE from nfsd_mode_check

In the Linux kernel, the following vulnerability has been resolved: NFSD: remove flawed WARNONONCE from nfsdmodecheck The header for commit e75b23f9e323 "nfsd: check dcanlookup in fhverify of directories" details the assumption that justified adding the WARNONONCE to nfsdmodecheck, that assumptio...

PT-2026-90427

In the Linux kernel, the following vulnerability has been resolved: NFSD: remove flawed WARN ON ONCE from nfsd mode check The header for commit e75b23f9e323 "nfsd: check d can lookup in fh verify of directories" details the assumption that justified adding the WARN ON ONCE to nfsd mode check, tha...