CVE-2026-89727

CVE-2026-89727 affects the Linux kernel KVM arm64 GICv2 implementation. In vgic_v2_deactivate(), a guest-written INTID is passed directly to vgic_get_vcpu_irq(), where a failed lookup triggers WARN_ON_ONCE()—treated as a "can't happen" condition. Since GICv2 has no LPIs, any INTID outside the SGI...

CVE-2026-89727 KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: GICv2: Don't WARN on out-of-range GICVDIR INTID vgicv2deactivate passes the INTID a guest wrote to GICVDIR straight to vgicgetvcpuirq, and treats a failed lookup as a "can't happen" condition with WARNONONCE. The gues...

CVE-2026-89716 zram: validate deflate params

In the Linux kernel, the following vulnerability has been resolved: zram: validate deflate params We must validate user-supplied deflate winbits before we pass it to zlibdeflateworkspacesize, which triggers BUGON if winbits value is outside of valid ranges...

CVE-2026-89714

This Linux kernel vulnerability affects the NFSv4 client subsystem. The root cause is a memory leak of server->delegation_hash_table (4 KiB per attempt with the default delegation watermark) when nfs4_server_common_setup() fails at an intermediate step (is_ds_only_client(), nfs4_init_session()...

EUVD-2026-76626

In the Linux kernel, the following vulnerability has been resolved: NFS: fix delegationhashtable leak when nfs4servercommonsetup fails nfs4servercommonsetup allocates server-delegationhashtable first, but server-destroy - the only path that frees the table via nfs4destroyserver - is not assigned...

EUVD-2026-76611

In the Linux kernel, the following vulnerability has been resolved: nfsd: validate symlink target length in NFSv4 CREATE nfsd4decodecreate accepts an unbounded crdatalen from the wire for NF4LNK symlink targets, allowing a client to force a kmalloc of up to the maximum RPC payload size several Mi...

EUVD-2026-76607

In the Linux kernel, the following vulnerability has been resolved: nfsd: cap decoded POSIX ACL count to bound sort cost nfsd4decodeposixacl reads a u32 entry count off the wire and passes it straight to posixaclalloc and sortpaclrange. The latter is an On^2 bubble sort, so a client-chosen count...

CVE-2026-89695

In the Linux kernel, the following vulnerability has been resolved: nfsd: cap decoded POSIX ACL count to bound sort cost nfsd4decodeposixacl reads a u32 entry count off the wire and passes it straight to posixaclalloc and sortpaclrange. The latter is an On^2 bubble sort, so a client-chosen count...

CVE-2026-89695 nfsd: cap decoded POSIX ACL count to bound sort cost

In the Linux kernel, the following vulnerability has been resolved: nfsd: cap decoded POSIX ACL count to bound sort cost nfsd4decodeposixacl reads a u32 entry count off the wire and passes it straight to posixaclalloc and sortpaclrange. The latter is an On^2 bubble sort, so a client-chosen count...

CVE-2026-89695 nfsd: cap decoded POSIX ACL count to bound sort cost

In the Linux kernel, the following vulnerability has been resolved: nfsd: cap decoded POSIX ACL count to bound sort cost nfsd4decodeposixacl reads a u32 entry count off the wire and passes it straight to posixaclalloc and sortpaclrange. The latter is an On^2 bubble sort, so a client-chosen count...

CVE-2026-89692 nfsd: clear CALLBACK_RUNNING on failed delegation recall queue

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-2026-89692 nfsd: clear CALLBACK_RUNNING on failed delegation recall queue

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-2026-89692

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-2026-89692

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-2026-89685

CVE-2026-89685 is a clock domain mismatch in the Linux kernel's NFS daemon (nfsd) . The function clients_still_reclaiming() derives its grace-period deadline from nn->boot_time (CLOCK_REALTIME , ~1.7 billion seconds) but compares it against ktime_get_boottime_seconds() (CLOCK_BOOTTIME , second...

CVE-2026-89685

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix clock domain mismatch in clientsstillreclaiming clientsstillreclaiming computes a deadline from nn-boottime CLOCKREALTIME, 1.7 billion but compares it against ktimegetboottimeseconds CLOCKBOOTTIME, seconds since boot. T...

EUVD-2026-76597

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix clock domain mismatch in clientsstillreclaiming clientsstillreclaiming computes a deadline from nn-boottime CLOCKREALTIME, 1.7 billion but compares it against ktimegetboottimeseconds CLOCKBOOTTIME, seconds since boot. T...

EUVD-2026-76596

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix cpntf publish race in nfs4initcpstate nfs4allocinitcpntfstate published the new cpntf entry into the s2scpstateids IDR with cstype set in one s2scplock section, then took the lock again to listadd it onto pstid-sccplist...

CVE-2026-89684

CVE-2026-89684 is a race condition in the Linux kernel's nfsd component, specifically in nfs4_alloc_init_cpntf_state() during copy-state notification initialization. The cpntf entry was published into the s2s_cp_stateids IDR before its list_head was linked, creating a window where a concurrent NF...