EUVD-2026-86692

In the Linux kernel, the following vulnerability has been resolved: bpf: Require MEMPERCPU for percpu kptr stores mapkptrmatchtype treats permflags as the set of register type flags that a kptr field permits. Adding MEMPERCPU to that set for BPFKPTRPERCPU does not require the source register to...

EUVD-2026-86690

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject untrusted allocated-object pointers When the final RCU read-side critical section ends, a local kptr is demoted to PTRUNTRUSTED but retains MEMALLOC. The pointer may be NULL or may refer to an object whose lifetime is...

EUVD-2026-86691

In the Linux kernel, the following vulnerability has been resolved: bpf: Keep refcountacquire nullable for borrowed RCU kptrs bpfrefcountacquire is fallible for a borrowed reference because the object may have reached a zero refcount. The verifier therefore keeps KFRETNULL on the return value...

EUVD-2026-86689

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve special fields in recycled rhtab elements rhtabmapupdateelem initializes special fields after obtaining an element from bpfmemcachealloc. The allocator can return a fresh, zeroed unit, or recycle one from its...

EUVD-2026-86688

In the Linux kernel, the following vulnerability has been resolved: bpf: Cancel special fields when recycling rhtab elements rhtabmapupdateexisting and rhtabdeleteelem call bpfobjfreefields when replacing or deleting a value. These map operations can run from BPF programs in NMI context, where...

EUVD-2026-86687

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark NULL kptr stores precise checkmapkptraccess permits a scalar store into an untrusted kptr field only when the register is known to contain zero. Unlike other verifier checks whose outcome depends on a scalar value, it...

EUVD-2026-86686

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve inner map identity in callback frames Callback frame constructors initialize map-typed argument registers with markregknownzero and then restore mapptr. This clears mapuid, which is the only field distinguishing inn...

EUVD-2026-86685

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix subbuf resize races with tracepiperaw readers Concurrent subbuffer resizes may crash tracepiperaw readers or leak uninitialized memory to userspace due to stale size values. Modify ringbufferallocreadpage to handle t...

EUVD-2026-86684

In the Linux kernel, the following vulnerability has been resolved: nexthop: Initialize extack in removenhgrpentry removenhgrpentry prints the extack message when a listener fails to replace the reduced nexthop group. However, extack is not initialized and listeners are not required to set a...

EUVD-2026-86682

In the Linux kernel, the following vulnerability has been resolved: eth: nfp: bound the ntuple rule dump by the caller's buffer size nfpnetgetfsloc dumps every entry of nn-fs.list into rulelocs without consulting cmd-rulecnt, which is how many entries the caller had room for. ETHTOOLGRXCLSRLALL...

EUVD-2026-86683

In the Linux kernel, the following vulnerability has been resolved: net: dsa: bcmsf2: bound the CFP rule dump by the caller's buffer size bcmsf2cfprulegetall walks the whole cfp.unique bitmap into rulelocs without consulting nfc-rulecnt, which is how many entries the caller had room for...

EUVD-2026-86681

In the Linux kernel, the following vulnerability has been resolved: eth: nfp: drop the replaced rule from the list when reprogramming fails nfpnetfsadd replaces an existing rule by deleting it from the hardware, decrementing nn-fs.count and programming the new one. If nfpnetfsaddhw fails the old...

EUVD-2026-86680

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: bound the policy rule dump by the caller's buffer size mv88e6xxxgetrxnfc uses rxnfc-rulecnt as the write index while dumping the policy IDR, clobbering the input value before it has been looked at. That input...

EUVD-2026-86679

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: properly convert mglist to rcu Sashiko reported a bug 1 that brmulticastdelportgroup unlists the port group not using proper rcu helper that preserves the next pointer and after that immediately frees the port...

EUVD-2026-86677

In the Linux kernel, the following vulnerability has been resolved: s390/ism: folioput after error dmb-cpuaddr was allocated via folioalloc. Use folioput instead of kfree in the error exit of ismallocdmb to avoid slab allocator corruption. While at it, reset dmb-cpuaddr after folioput to avoid...

EUVD-2026-86678

In the Linux kernel, the following vulnerability has been resolved: net: usb: cx82310eth: drop URB after 0xffff reboot sentinel to prevent partialdata heap overflow The 0xffff length sentinel detects a router reboot and schedules re-enabling of ethernet mode, but then falls through to the rest of...

EUVD-2026-86675

In the Linux kernel, the following vulnerability has been resolved: net: cap txqueuelen at S16MAX to prevent oversized ring allocations Several subsystems allocate ring buffers sized by dev-txqueuelen with no upper bound. An unprivileged user via unshare -Urn can set a huge txqueuelen and exhaust...

EUVD-2026-86676

In the Linux kernel, the following vulnerability has been resolved: vxlan: reject dynamic fdb entries that reference a nexthop id The commit cited in the Fixes tag allowed VXLAN FDB entries to point to FDB nexthops so that overlay traffic could be load balanced across multiple VTEPs. Such entries...

EUVD-2026-86674

In the Linux kernel, the following vulnerability has been resolved: net: reject oversized txqueuelen at netlink parse time rtnlcreatelink assigns IFLATXQLEN directly to dev-txqueuelen without going through netifchangetxqueuelen, so a device created with "ip link add ... txqueuelen 500000" bypasse...

EUVD-2026-86672

In the Linux kernel, the following vulnerability has been resolved: bpf: mark a NULL call argument precise checkfuncarg allows bpfregisterisnull for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scala...

EUVD-2026-86673

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

EUVD-2026-86670

In the Linux kernel, the following vulnerability has been resolved: net/sched: defer qdisc freeing after failed creation An RTMNEWQDISC request can make clsact bind a populated shared ingress block during -init, publishing an embedded miniQdisc to lockless readers. If the same request has an...

EUVD-2026-86671

In the Linux kernel, the following vulnerability has been resolved: net: mctp: i3c: serialize probe with bus removal mctpi3cprobe drops busdevslock after finding the matching bus. A concurrent I3CNOTIFYBUSREMOVE can then unregister and free the bus netdev before probe passes its private data to...

EUVD-2026-86669

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free race in samplerestoreput Concurrent teardown of TC sample rules sharing the same restore context may re-read restore-count after dropping restorelock. At that point another thread may already have...

EUVD-2026-86667

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: E-Switch, prevent mclist repopulation during vport disable In mlx5eswvportdisable, move eswapplyvportrxmode ahead of eswvportchangehandlelocked so vport-allmultirule is NULL before the change handler observes it. During...

EUVD-2026-86668

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: E-Switch: fix use-after-free in mlx5eswitchtermtblput In mlx5eswitchtermtblput, the zero-ref cleanup check reads tt-refcount after termtblmutex has been released. Two concurrent callers on the same mlx5termtblhandle rac...

EUVD-2026-86666

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqpie: clamp quantum in change path fqpiechange accepts any quantum value from userspace, including 1. With a crafted size table qdiscpktlen reaches 2 GiB, so quantum=1 makes the deficit-refill loop spin 2^31 times und...

EUVD-2026-86664

In the Linux kernel, the following vulnerability has been resolved: net/sched: hhf: clamp quantum in change and init paths hhfchange accepts any quantum from userspace, including 1. With a crafted size table qdiscpktlen reaches 2 GiB, so quantum=1 makes the deficit-refill loop spin 2^31 times und...

EUVD-2026-86665

In the Linux kernel, the following vulnerability has been resolved: net/sched: sfq: clamp quantum in change path sfqchange accepts any non-negative quantum only rejects intctl-quantum 120 with -EINVAL, matching fqcodelchange and the init clamp. Conditions to recreate the bug: CONFIGNETSCHSFQ=y...

EUVD-2026-86662

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: clamp quantum in parse and fallback paths etsqdiscchange falls back to pschedmtu with no floor for bands without an explicit quantum. With a crafted size table qdiscpktlen reaches 2 GiB, so a zero pschedmtu on a...

EUVD-2026-86663

In the Linux kernel, the following vulnerability has been resolved: net/sched: drr: clamp quantum in change class drrchangeclass rejects explicit quantum==0 but falls back to pschedmtu with no floor. With a crafted size table qdiscpktlen reaches 2 GiB, so quantum=1 or a zero pschedmtu on a...

EUVD-2026-86661

In the Linux kernel, the following vulnerability has been resolved: net: macb: fix NULL pointer dereference on unbind with fixed-link When the device tree describes a fixed-link and has no "mdio" child node, macbmiiinit returns early without allocating the MDIO bus, leaving bp-miibus as NULL. Two...

EUVD-2026-86659

In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Decoupling ep1inurb in caiaq dev The epqinurb object belonging to the caiaq device is coupled within the struct sndusbcaiaqdev. After usbsubmiturbepqinurb, GFPKERNEL executes successfully, epqinurb is successfully...

EUVD-2026-86660

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject non-scalar bpfloop iteration counts bpfloop declares its nrloops argument as ARGANYTHING. Privileged programs may pass pointer values to such arguments, so checkfuncarg lets a pointer-valued R1 reach the helper-specif...

EUVD-2026-86658

In the Linux kernel, the following vulnerability has been resolved: erofs: delimit inodeshare cache key components Previously, inodeshare keys were encoded as follows: fingerprint || domainid It would be better to have a separator between the fingerprint and domain ID so that the fingerprint won'...

EUVD-2026-86657

In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Serialize command queue publishing Serialize command queue publishing so software producer state advances only after a command is written and the hardware tail is updated. Wait for hardware consumption outside the...

EUVD-2026-86656

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Do not reallocate GA log buffers on resume Commit c5e1a1eb9279 "iommu/amd: Simplify and Consolidate Virtual APIC AVIC Enablement" moved the GA log allocation from iommuinitpci to enableiommusvapic, which is called on...

EUVD-2026-86654

In the Linux kernel, the following vulnerability has been resolved: hwmon: ltc4282 Make sure clkinitdata is fully initialized The clkinitdata structure contains several mutually-exclusive members for different methods to specify the possible parents of a clock, prompting drivers to initialize onl...

EUVD-2026-86655

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix ineffective error check in nested domain allocation amdiommupdomidalloc returns an int: a domain ID on success, or the negative errno from idaallocrange when the ID space is exhausted or memory is short...

EUVD-2026-86652

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinklog: cope with concurrent instance destruction Instances are refcounted. However, only memory release happens on the 1 - 0 transition; the unlink from hashes can occur with any refcount. Uncooperative userspac...

EUVD-2026-86653

In the Linux kernel, the following vulnerability has been resolved: hwmon: Fix potential UAF in pecstore Sashiko reports: In pecstore, a guardmutex&hwdev-lock is taken. If the chip write operation returns an error other than -EOPNOTSUPP, the code jumps to the put label, which calls putdevicehdev...

EUVD-2026-86651

In the Linux kernel, the following vulnerability has been resolved: virtioring: fix stale descriptor flags after a failed packed add In a packed ring the AVAIL and USED bits sit in the descriptor itself, so writing them makes that descriptor available. Those bit combinations flip meaning on every...

EUVD-2026-86649

In the Linux kernel, the following vulnerability has been resolved: virtioconsole: do not free control-out buffers on remove sendcontrolmsg publishes &portdev-cpkt as the control-out virtqueue cookie. removevqs walks every virtqueue and passes leftover cookies to freebuf, which treats them as...

EUVD-2026-86650

In the Linux kernel, the following vulnerability has been resolved: virtio: fix use-after-free in unregistervirtiodevice deviceunregister is devicedel plus putdevice. When the caller holds no extra reference, that drops the last one and runs the release callback, which for several transports free...

EUVD-2026-86648

In the Linux kernel, the following vulnerability has been resolved: vhost/vdpa: reject VRINGNUM larger than device max vhostvringsetnum accepts any non-zero power-of-two queue size that fits in 16 bits. vhost-vdpa then passes that value to setvqnum without comparing it with getvqnummax. A process...

EUVD-2026-86647

In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: don't install the eventfdctxfdget error in configctx vhostvdpasetconfigcall swaps the eventfdctxfdget return value into v-configctx before checking it, so on failure the field briefly holds an ERRPTR: ctx = fd ==...

EUVD-2026-86646

In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: protect configctx from being freed under the config callback vhostvdpaconfigcb loads v-configctx and signals it without taking a reference and without holding any lock: struct eventfdctx configctx = v-configctx; if...

EUVD-2026-86645

In the Linux kernel, the following vulnerability has been resolved: vdpasimblk: reject out-of-range sector starts vdpasimblkcheckrange logs an invalid start sector but continues validating the request. The subsequent unsigned capacity subtraction can underflow and let an out-of-range buffer offse...

EUVD-2026-86644

In the Linux kernel, the following vulnerability has been resolved: vdpasimnet: check TX pull result before RX copy vringhiovpulliotlb returns a signed byte count. A failed TX pull is currently added to the unsigned byte counter and then passed as a sizet length to receivefilter and...

EUVD-2026-86643

In the Linux kernel, the following vulnerability has been resolved: vduse: validate virtqueue alignment vdusevalidateconfig only checks the upper bound of vqalign. Invalid values can therefore reach vringcreatevirtqueuemap. The split-ring helpers use align - 1 as a bit mask, so the alignment must...