CVE-2026-90191 mailbox: riscv-sbi-mpxy: validate RPMI notification lengths

In the Linux kernel, the following vulnerability has been resolved: mailbox: riscv-sbi-mpxy: validate RPMI notification lengths The SBI return value controls how many bytes are copied from shared memory into the RPMI notification buffer. It is not validated against the negotiated shared-memory si...

CVE-2026-90192 mailbox: qcom-cpucp: handle NULL data in send_data callback

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in senddata callback mailboxclearchannel calls mboxsendmessage with NULL data to notify the remote side that the RX channel has been cleared. qcomcpucpmboxsenddata blindly dereferenced the da...

CVE-2026-90190 null_blk: use DEFINE_MUTEX for the file-scope mutex

In the Linux kernel, the following vulnerability has been resolved: nullblk: use DEFINEMUTEX for the file-scope mutex In nullinit, mutexinit&lock currently happens after configfsregistersubsystem, which exposes the nullb subsystem to userspace. A racing mkdir into /sys/kernel/config/nullb/ can...

CVE-2026-90188 null_blk: free global tag_set on init error path

In the Linux kernel, the following vulnerability has been resolved: nullblk: free global tagset on init error path If sharedtags is enabled, nullsetuptagset allocates the global tagset via nullinitglobaltagset. If device creation later fails, errdev destroys the default devices and calls...

CVE-2026-90189 null_blk: register configfs subsystem after creating default devices

In the Linux kernel, the following vulnerability has been resolved: nullblk: register configfs subsystem after creating default devices In nullinit, configfsregistersubsystem currently runs before registerblkdev, so when nullblk is built as a module, a racing mkdir + poweron from userspace can...

CVE-2026-90186 null_blk: reject per-device queue resize for shared tag set

In the Linux kernel, the following vulnerability has been resolved: nullblk: reject per-device queue resize for shared tag set When sharedtags is enabled, nullsetuptagset makes the device use the global tagset, whose driverdata stays NULL. nullmapqueues therefore falls back to the module-wide...

CVE-2026-90187 null_blk: free zones array on device power-off

In the Linux kernel, the following vulnerability has been resolved: nullblk: free zones array on device power-off nullinitzoneddev allocates dev-zones when a zoned device is powered on, but nulldeldev never frees it on power-off; dev-zones is only freed later in nullfreedev, when the configfs...

CVE-2026-90185 null_blk: serialize configfs attribute stores with the lock

In the Linux kernel, the following vulnerability has been resolved: nullblk: serialize configfs attribute stores with the lock The NULLBDEVICEATTR store takes no lock: applyfn attributes submitqueues, pollqueues get dev-NAME written again after applyfn returns, outside its lock; APPLY=NULL...

CVE-2026-90184 null_blk: serialize configfs attribute updates with device setup

In the Linux kernel, the following vulnerability has been resolved: nullblk: serialize configfs attribute updates with device setup The attribute store methods generated with NULLBDEVICEATTR refuse to change the configuration of a live device by testing NULLBDEVFLCONFIGURED, but that flag is only...

CVE-2026-90183 blk-iolatency: clear delay state when freeing policy data

In the Linux kernel, the following vulnerability has been resolved: blk-iolatency: clear delay state when freeing policy data io.latency can throttle a group which has no latency target of its own. When a sibling misses its target, checkscalechange scales down its peers, and a peer that reaches...

CVE-2026-90182 blk-iocost: clear delay state when freeing policy data

In the Linux kernel, the following vulnerability has been resolved: blk-iocost: clear delay state when freeing policy data iocgkickdelay turns sufficiently large debt into an explicit block-cgroup delay with blkcgsetdelay, setting blkg-usedelay to -1 and incrementing blkcg-congestioncount. Cleari...

CVE-2026-90181 ublk: avoid teardown retry loop on xarray allocation failure

In the Linux kernel, the following vulnerability has been resolved: ublk: avoid teardown retry loop on xarray allocation failure ublkshmemremoveranges removes matching maple tree ranges in batches, but first stores each range into a temporary xarray so that the pages can be unpinned after droppin...

CVE-2026-90180 block: mtip32xx: synchronize ioctls with device removal

In the Linux kernel, the following vulnerability has been resolved: block: mtip32xx: synchronize ioctls with device removal The ioctl handlers only test REMOVEPENDING before entering mtiphwioctl. Removal can set that bit immediately afterwards and free dd-port in mtiphwexit while an ioctl still...

CVE-2026-90179 apparmor: fix deadlock in complain-mode change_hat

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix deadlock in complain-mode changehat The use of changehat when in complain mode can cause a deadlock when the hat doesn't exist and a new learning profile is created for the missing profile. This is because changehat...

CVE-2026-90178 hwmon: (coretemp) Fix core_data leak on CPUs without PTS

In the Linux kernel, the following vulnerability has been resolved: hwmon: coretemp Fix coredata leak on CPUs without PTS pdata-coredata is allocated in inittempdata when the first core tempdata of a package is created, but it is only released from destroytempdata, and only in the branch that...

CVE-2026-90177 bpf: Check pointer type for all atomic RMW paths

In the Linux kernel, the following vulnerability has been resolved: bpf: Check pointer type for all atomic RMW paths Atomic RMW verification records an instruction pointer type only when the current destination is PTRTOARENA. A second path can therefore reach the same instruction with an ordinary...

CVE-2026-90176 ksmbd: Do not skip lock checks for single-byte ranges

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Do not skip lock checks for single-byte ranges checklockrange uses inclusive ranges. Its callers pass the end offset as start + length - 1, so start == end represents a valid single-byte range rather than an empty range. T...

CVE-2026-90174 ksmbd: fix slab-out-of-bounds read in ksmbd_alloc_user()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab-out-of-bounds read in ksmbdallocuser ksmbdallocuser copies resp-hashsz bytes out of the mountd IPC login response with user-passkeysz = resp-hashsz; user-passkey = kmallocresp-hashsz, KSMBDDEFAULTGFP; if...

CVE-2026-90175 smb: server: fix leak of ksmbd_ipc_login_request_ext() returned buffer

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix leak of ksmbdipcloginrequestext returned buffer Free it unconditionally after ksmbdallocuser calls. kmemleak splat: unreferenced object 0xffff888103b83540 size 192: comm "pool-0", pid 16970, jiffies 4377290937 he...

CVE-2026-90173 smb: smbdirect: free completion queues with ib_free_cq()

In the Linux kernel, the following vulnerability has been resolved: smb: smbdirect: free completion queues with ibfreecq smbdirectconnectiondestroyqp creates the send and receive completion queues with iballoccqany, which for IBPOLLWORKQUEUE arms an internal completion handler that runs...

CVE-2026-90171 smb: smbdirect: release pending child sockets outside the handler lock

In the Linux kernel, the following vulnerability has been resolved: smb: smbdirect: release pending child sockets outside the handler lock smbdirectsocketdestroy releases the listener's pending/ready child sockets while still holding the listener's handler lock, the &idpriv-handlermutex taken via...

CVE-2026-90172 smb: smbdirect: destroy QP before mem pools on accept failure

In the Linux kernel, the following vulnerability has been resolved: smb: smbdirect: destroy QP before mem pools on accept failure On the rdmaacceptfailed error path of smbdirectacceptconnectrequest, the receive io posted just above is owned by the QP recvio is set to NULL after a successful post...

CVE-2026-90170 ksmbd: validate ipc response length before dereferencing its fields

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate ipc response length before dereferencing its fields ipcvalidatemsg computes the expected message size by reading length fields out of the response buffer supplied by the userspace ksmbd daemon payloadsz,...

CVE-2026-90169 ksmbd: free preauth sessions on connection teardown

In the Linux kernel, the following vulnerability has been resolved: ksmbd: free preauth sessions on connection teardown SMB3.1.1 multichannel binding preserves the preauthentication hash in a preauthsession between the NTLM negotiate and authenticate requests. The binding NTLM negotiate allocates...

CVE-2026-90168 ksmbd: retain connection for pending notify work

In the Linux kernel, the following vulnerability has been resolved: ksmbd: retain connection for pending notify work Deferred CHANGENOTIFY work keeps an async message ID after the original request work is released. A durable handle can outlive its connection, so the connection teardown can destro...

CVE-2026-90167 ksmbd: serialize oplock close with pending break ownership

In the Linux kernel, the following vulnerability has been resolved: ksmbd: serialize oplock close with pending break ownership close may abort an in-flight oplock break while another breaker already holds an opinfo reference. Releasing pendingbreak wakes that waiter, but without serializing the...

CVE-2026-90165 smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger()

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix invalid pointer dereference in ksmbdstopdurablescavenger See the procedure below: ksmbdlaunchksmbddurablescavenger durablescavengerrunning = true serverconf.dhtask = kthreadrun // fail, dhtask is an ERRPTR...

CVE-2026-90166 smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix null-ptr-deref in ksmbdipctreeconnectrequest See the procedure below: ksmbdtreeconnconnect ksmbdshareconfigget share-name = kstrdup // fail if !testshareconfigflagshare, KSMBDSHAREFLAGPIPE // false // do not check...

CVE-2026-90164 smb/server: abort initialization when proc setup fails

In the Linux kernel, the following vulnerability has been resolved: smb/server: abort initialization when proc setup fails ksmbdserverinit calls ksmbdprocinit before creating the remaining proc entries and server subsystems. ksmbdprocinit tears down partial state on a procfs or percpucounter...

CVE-2026-90163 smb/server: call ksmbd_proc_cleanup() on module init failure

In the Linux kernel, the following vulnerability has been resolved: smb/server: call ksmbdproccleanup on module init failure When a later initializer fails, the unwind chain releases resources created after procfs and then jumps directly to classunregister. Returning an error from moduleinit leav...

CVE-2026-90162 ksmbd: defer publishing granted locks to prevent UAF/double-free race

In the Linux kernel, the following vulnerability has been resolved: ksmbd: defer publishing granted locks to prevent UAF/double-free race In smb2lock, mid-batch granted locks are published to connection-wide conn-locklist and file-wide fp-locklist lists immediately upon vfslockfile success, while...

CVE-2026-90161 erofs: fix interlaced ztailpacking pclusters

In the Linux kernel, the following vulnerability has been resolved: erofs: fix interlaced ztailpacking pclusters On-disk sizes of interlaced pclusters should be block-aligned, and ztailpacking interlaced pclusters should be invalid at all. Currently, mkfs.erofs won't generate any interlaced...

CVE-2026-90159 bpf: Disallow bpf_{g,s}etsockopt() in cgroup UNIX getname hooks

In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow bpfg,setsockopt in cgroup UNIX getname hooks bpfsetsockopt and bpfgetsockopt call sockownedbyme for full sockets, so these helpers expect the socket lock to be held. BPFCGROUPUNIXGETPEERNAME and...

CVE-2026-90160 lwt_bpf: Restore reserved headroom after xmit program

In the Linux kernel, the following vulnerability has been resolved: lwtbpf: Restore reserved headroom after xmit program ipfinishoutput2 expands an skb to LLRESERVEDSPACEdev before LWT xmit. An LWTXMIT BPF program can then modify the skb head and still return BPFOK, so bpfxmit rechecks the...

CVE-2026-90157 bpf: Reject negative optlen in cgroup getsockopt hook

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative optlen in cgroup getsockopt hook A cgroup getsockopt BPF program can shrink ctx-optlen after the kernel getsockopt handler has run. The kernel-buffer variant, used by TCPZEROCOPYRECEIVE, only rejects values...

CVE-2026-90158 m68k: nfcon: Do not call console_is_registered() in nfcon_device()

In the Linux kernel, the following vulnerability has been resolved: m68k: nfcon: Do not call consoleisregistered in nfcondevice Since 7c2af0f634f1 "tty: ttyio: use consolelistlock for list synchronization" showconsactive calls the .device method under the consolelistlock, but consoleisregistered...

CVE-2026-90156 ksmbd: safely discard unregistered deferred locks

In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely discard unregistered deferred locks When vfslockfile defers a lock, smb2lock puts its ksmbdlock on rollbacklist before allocating and registering the asynchronous work. If either operation fails, rollback assumes th...

CVE-2026-90155 ksmbd: detach blocked lock requests before freeing

In the Linux kernel, the following vulnerability has been resolved: ksmbd: detach blocked lock requests before freeing A filelock retained by ksmbd for byte-range lock bookkeeping can still be part of the VFS blocked-request graph. In particular, the VFS can chain a new waiter below an already...

CVE-2026-90154 ksmbd: scope session state changes to bound connections

In the Linux kernel, the following vulnerability has been resolved: ksmbd: scope session state changes to bound connections ksmbdallconnsetstatus treats every connection whose transient binding flag is set as belonging to the target SessionId. A logoff or session replacement can consequently move...

CVE-2026-90153 ksmbd: bound smb_check_perm_dacl() ACE walks by DACL size

In the Linux kernel, the following vulnerability has been resolved: ksmbd: bound smbcheckpermdacl ACE walks by DACL size smbcheckpermdacl validates that the DACL fits inside the NT security descriptor, but then bounds its two ACE walks by the remaining NTSD length aclsize rather than the DACL's...

CVE-2026-90152 smb/server: fix session leak in ksmbd_session_register()

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix session leak in ksmbdsessionregister See the procedure below: smb2sesssetup ksmbdsmb2sessioncreate sessioncreate atomicset&sess-refcnt, 2 hashaddsessionstable, &sess-hlist, sess-id ksmbdsessionregister...

CVE-2026-90151 NFSv4: remove callback IDR entry on client allocation failure

In the Linux kernel, the following vulnerability has been resolved: NFSv4: remove callback IDR entry on client allocation failure nfs4allocclient allocates an NFSv4.0 callback identifier before it finishes setting up the client. If any later initialization step fails, the error path frees the...

CVE-2026-90150 pnfs/blocklayout: Fix device leaks on parse failure

In the Linux kernel, the following vulnerability has been resolved: pnfs/blocklayout: Fix device leaks on parse failure blparseconcat and blparsestripe allocate a child device array and then parse each child in turn. If parsing a child fails, the failed child is not counted in nrchildren and the...

CVE-2026-90149 NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers flexfiles accepts NFSv4.0 data servers, but two NFSv4 code paths assume the data server client has a session. Unlike NFSv4.1+, an NFSv4.0 client has no session...

CVE-2026-90147 clk: devres: fix cleanup in devm_clk_get_optional_enabled_with_rate()

In the Linux kernel, the following vulnerability has been resolved: clk: devres: fix cleanup in devmclkgetoptionalenabledwithrate devmclkgetoptionalenabledwithrate registers its cleanup action before setting the clock rate. If setting the rate fails, it attempts to disable and unprepare a clock...

CVE-2026-90148 NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease()

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix incorrect argument passed to nfs4deletelease in nfs4addlease When nfs4addlease races with a delegation return, it calls nfs4deletelease to clean up. Previously, it passed priv, which can legitimately be NULL. Passing a...

CVE-2026-90145 hinic3: Fix skb linearization mismatch and drop skb when skb_checksum_help() failed

In the Linux kernel, the following vulnerability has been resolved: hinic3: Fix skb linearization mismatch and drop skb when skbchecksumhelp failed Previously, hinic3sendoneskb cached the skb fragment count before calling hinic3txoffload. If hinic3txcsum falls back to skbchecksumhelp for...

CVE-2026-90146 bpf, xdp: move offload check into dev_xdp_install()

In the Linux kernel, the following vulnerability has been resolved: bpf, xdp: move offload check into devxdpinstall bpfxdplinkupdate calls devxdpinstall directly and skips devxdpattach, so the checks in devxdpattach do not run. A user can make an XDP link with a normal program and then swap in an...

CVE-2026-90144 dpll: fix NULL deref in dpll_device_ops() during teardown race

In the Linux kernel, the following vulnerability has been resolved: dpll: fix NULL deref in dplldeviceops during teardown race When the last owner of a dpll device unregisters while a foreign driver still holds a pin on it via dpllpinonpinregister, the dpll object stays alive with an empty...

CVE-2026-90142 virtio_net: Fix resize of the RX ring

In the Linux kernel, the following vulnerability has been resolved: virtionet: Fix resize of the RX ring When a AFXDP socket is attached, the virtnetrxresize should resize the rq-xskbuffs XSK buffer array. Otherwise, when the size grows, the virtnetrxresume causes a write past the end of the arra...