CVE-2026-89707

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

CVE-2026-89706

In the Linux kernel, the following vulnerability has been resolved: nfsd: Reset write verifier when async COPY writeback fails Async COPY captures nn-writeverf at request time and reports it to the client via CBOFFLOAD after the worker kthread completes. When the post-copy vfsfsyncrange or...

CVE-2026-89706

A vulnerability in the Linux kernel's nfsd (NFS server) component causes silent data loss during asynchronous COPY operations. When post-copy writeback fails (via vfs_fsync_range() or filemap_check_wb_err()), the server correctly reports NFS_UNSTABLE but fails to rotate the write verifier. The cl...

EUVD-2026-76617

In the Linux kernel, the following vulnerability has been resolved: nfsd: restore rqstatuscounter to even on all nfsddispatch exit paths nfsddispatch sets rqstatuscounter to an odd value once a request has been decoded, and back to an even value once it has been fully processed, forming a seq-loc...

CVE-2026-89704

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

CVE-2026-89704 nfsd: sample writeback error cursor before async COPY loop

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

CVE-2026-89705 nfsd: restore rq_status_counter to even on all nfsd_dispatch() exit paths

In the Linux kernel, the following vulnerability has been resolved: nfsd: restore rqstatuscounter to even on all nfsddispatch exit paths nfsddispatch sets rqstatuscounter to an odd value once a request has been decoded, and back to an even value once it has been fully processed, forming a seq-loc...

CVE-2026-89703 nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations

In the Linux kernel, the following vulnerability has been resolved: nfsd: set SCSTATUSFREED in nfsd4droprevokedstid for delegations nfsd4droprevokedstid handles FREESTATEID for admin-revoked delegations but does not set SCSTATUSFREED before releasing cllock. revokedelegation uses this flag to...

EUVD-2026-76614

In the Linux kernel, the following vulnerability has been resolved: nfsd: size fhverify server sockaddr slot by xptlocallen The nfsdfhverify and nfsdfhverifyerr tracepoints declare the server sockaddr slot sized by xptremotelen but fill it from xptlocal using xptlocallen: TPSTRUCTentry...

CVE-2026-89702

CVE-2026-89702 is a buffer overflow in the Linux kernel's NFSd (Network File System Daemon). The nfsd_fh_verify and nfsd_fh_verify_err tracepoints declare the server sockaddr ring-buffer slot using xpt_remotelen but fill it from xpt_local using xpt_locallen. For NFSv2/v3-over-UDP connections, xpt...

CVE-2026-89702 nfsd: size fh_verify server sockaddr slot by xpt_locallen

In the Linux kernel, the following vulnerability has been resolved: nfsd: size fhverify server sockaddr slot by xptlocallen The nfsdfhverify and nfsdfhverifyerr tracepoints declare the server sockaddr slot sized by xptremotelen but fill it from xptlocal using xptlocallen: TPSTRUCTentry...

CVE-2026-89702 nfsd: size fh_verify server sockaddr slot by xpt_locallen

In the Linux kernel, the following vulnerability has been resolved: nfsd: size fhverify server sockaddr slot by xptlocallen The nfsdfhverify and nfsdfhverifyerr tracepoints declare the server sockaddr slot sized by xptremotelen but fill it from xptlocal using xptlocallen: TPSTRUCTentry...

CVE-2026-89702

In the Linux kernel, the following vulnerability has been resolved: nfsd: size fhverify server sockaddr slot by xptlocallen The nfsdfhverify and nfsdfhverifyerr tracepoints declare the server sockaddr slot sized by xptremotelen but fill it from xptlocal using xptlocallen: TPSTRUCTentry...

CVE-2026-89697 nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr()

In the Linux kernel, the following vulnerability has been resolved: nfsd: add fhwantwrite for early-verified SETATTR in nfsdprocsetattr The BOTHTIMESET branch calls fhverify early so setattrprepare can inspect the dentry. This causes nfsdsetattr to skip fhwantwrite, so notifychange runs without a...

CVE-2026-89693 nfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()

In the Linux kernel, the following vulnerability has been resolved: nfsd: check nfsd4acltoattr return value in nfsd4create nfsd4create stores the return value of nfsd4acltoattr in status, but the switchcreate-crtype block unconditionally overwrites it in every branch. ACL translation errors are...

CVE-2026-89692

CVE-2026-89692 is a denial-of-service vulnerability in the Linux kernel's nfsd (NFS daemon). When a delegation recall queue attempt fails, the NFSD4_CALLBACK_RUNNING flag is left permanently set because the only code path that clears it (nfsd41_destroy_cb) is unreachable in that scenario. This ca...

EUVD-2026-76604

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear CALLBACKRUNNING on failed delegation recall queue nfsdbreakonedeleg sets NFSD4CALLBACKRUNNING via testandsetbit at entry to serialize recall work, then calls nfsd4runcb to queue the recall. When the queue attempt fail...

CVE-2026-89693

CVE-2026-89693 affects the Linux kernel's NFS daemon (nfsd) . The vulnerability is in the nfsd4_create() function, where the return value of nfsd4_acl_to_attr() is stored in status but unconditionally overwritten by every branch of the switch(create->cr_type) block. As a result, ACL translatio...

EUVD-2026-76600

In the Linux kernel, the following vulnerability has been resolved: nfsd: drop the stateid, not the stateowner, on seqidop replay retry In nfs4preprocessseqidop the stateid is obtained from nfsd4lookupstateid, which holds a reference on the nfs4stid sccount but takes no reference on the stateowne...

CVE-2026-89689

CVE-2026-89689 is a use-after-free vulnerability in the Linux kernel's NFS daemon (nfsd) , specifically in nfsd4_sequence(). When the session shrinker reduces the number of active slots, free_session_slots() may free a slot still in use by the current request or a concurrent thread, because seq-&...