UBUNTU-CVE-2026-98039

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...

UBUNTU-CVE-2026-98044

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject legacy packet loads from callbacks checkldabs models a failed BPFLDABS or BPFLDIND in a subprogram as an implicit return with R0 set to zero. It calls preparefuncexit to explore this synthesized path. When the load is...

UBUNTU-CVE-2026-98056

In the Linux kernel, the following vulnerability has been resolved: nvme: remove stale namespaces by NSID range during scan nvmescannslist drops the stale namespaces in each gap in the reported NSID list one NSID at a time. Every iteration calls nvmefindgetns to look the namespace up and removes ...

UBUNTU-CVE-2026-98059

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark schedprocesswait argument as nullable dowait passes wo-wopid to the schedprocesswait tracepoint. kernelwait4 leaves wopid NULL for wait4-1, and kernelwaitidprepare does likewise for waitidPALL. btfctxaccess currently...

UBUNTU-CVE-2026-98066

In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Fix potential double-free at error path The fix for caiaq driver's resource management to handle the errors tries to release the resources in a common destructor call, but as a sashiko review for another patch...

UBUNTU-CVE-2026-98088

In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Avoid out-of-bounds cpumaskofnode call in baseassignreplyqueues devtonode can return NUMANONODE -1 on systems without NUMA topology information for the PCI device, such as single-socket boards that don't expose...

UBUNTU-CVE-2026-98095

In the Linux kernel, the following vulnerability has been resolved: afpacket: Don't cast tpackethdr.tplen to int in tpacketparseheader. syzbot reported BUG in socksendmsgnosec. 0 The problem is that tpacketparseheader casts user-provided tpackethdr.tplen, which is u32, to int. If the length is...

UBUNTU-CVE-2026-98096

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: restore network header before routing and forwarding ipv6srhrcv runs with skb-data at the Segment Routing Header SRH while skbnetworkheader points at the IPv6 header. When segmentsleft 0, ipv6srhrcv previously restored...

UBUNTU-CVE-2026-98116

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF sndpcmhwparams and sndpcmhwfree guard buffer reallocation with an mmapcount check performed under the PCM stream lock, but the lock is released long before th...

UBUNTU-CVE-2026-98119

In the Linux kernel, the following vulnerability has been resolved: netfs: break unbuffered write when netfsallocsubrequest fails syzbot reported a null-ptr-deref below 1 following a fault injection in netfsallocsubrequest. 0 When netfsallocsubrequest fails, subreq is NULL. Later, netfspreparewri...

UBUNTU-CVE-2026-98142

In the Linux kernel, the following vulnerability has been resolved: drm/cirrus-qemu: Validate BAR0 size during probe The cirrus-qemu driver relies on CIRRUSVRAMSIZE 4 MB to validate framebuffer sizes. However, during PCI probe, the driver mapped BAR0 without verifying that its size matches...

UBUNTU-CVE-2026-98156

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: use the DMA API for resource backing on Xen On a Xen PV domain page addresses bear no relation to the real machine addresses the host would have to use to reach it. virtioring.c handles this correctly, vringusemapapi...

UBUNTU-CVE-2026-98158

In the Linux kernel, the following vulnerability has been resolved: pppasync: drop the errored frame instead of resetting its headroom pppreceivenonmpframe prepends a two-byte direction tag before running the pass/active BPF filters: be16 skbpushskb, 2 = htonsPPPFILTERINBOUNDTAG; Nothing on the...

UBUNTU-CVE-2026-98126

In the Linux kernel, the following vulnerability has been resolved: smb/client: validate new EOF for zero range When FALLOCFLZERORANGE is used without FALLOCFLKEEPSIZE, smb3zerorange may extend EOF without checking RLIMITFSIZE, allowing the file to grow beyond the caller's file-size limit. Fix th...

UBUNTU-CVE-2026-97598

In the Linux kernel, the following vulnerability has been resolved: ipv4: fib: bound automatic table ID allocation fibemptytable probes every table ID from 1 until it finds a free one. IPv4 tables are stored in a 256-bucket hash table, so a dense set of IDs makes each probe walk a growing hash...

UBUNTU-CVE-2026-97609

In the Linux kernel, the following vulnerability has been resolved: netfilter: cttimeout: prevent UAF during module unload nfctsettimeout protects the timeout hook dereference and policy lookup with rcureadlock. cttimeoutexit, however, unregisters the per-net operations before it clears the hook...

UBUNTU-CVE-2026-97612

In the Linux kernel, the following vulnerability has been resolved: net: mpls: clear innerprotocol when the last label is popped skbmplspush records the pre-encapsulation network header once, gated on !skb-innerprotocol. skbmplspop never clears that record, so it outlives the encapsulation it...

UBUNTU-CVE-2026-98011

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...

UBUNTU-CVE-2026-98012

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...

UBUNTU-CVE-2026-98021

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...

UBUNTU-CVE-2026-98022

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...

UBUNTU-CVE-2026-98023

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...

UBUNTU-CVE-2026-98026

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...

UBUNTU-CVE-2026-98089

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: fix uninitialized transport header access in albdeterminend albdeterminend uses icmp6hdrskb to inspect ICMPv6 headers. However, in xmit paths e.g. packets sent via AFPACKET / raw sockets or forwarded packets,...

UBUNTU-CVE-2026-98090

In the Linux kernel, the following vulnerability has been resolved: btrfs: restore active device pointers after failed sprout btrfsinitnewdevice switches latestdev and possibly sbdev from the seed device to the new sprout device before creating the first writable chunks. If chunk creation or the...

UBUNTU-CVE-2026-98097

In the Linux kernel, the following vulnerability has been resolved: tipc: Dont send random pad bytes in RESET/ACTIVATE messages The interface name is passed in a fixed length TIPCMAXIFNAME buffer. Replace the strcpydata, l-ifname with memcpy so that the pad bytes are actually written l-ifname is...

UBUNTU-CVE-2026-98101

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: use copy-on-write RCU updates in ip6mcsource pmc-sflist is read locklessly under rcureadlock by inet6mccheck during packet reception in the UDP and RAW multicast receive paths. ip6mcsource mutated psl-sladdr and...

UBUNTU-CVE-2026-98113

In the Linux kernel, the following vulnerability has been resolved: ksmbd: rate limit unmapped SID errors A client can include many structurally valid but unmapped SIDs in a DACL. Logging every mapping failure lets one request generate hundreds of kernel error messages. Rate limit the message to...

UBUNTU-CVE-2026-97556

In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid leaking refcount when cifssbtlink fails cifsoplockbreak takes over the reference that cifsqueueoplockbreak acquired when it queued the work, and drops it with cifsFileInfoput once the break has been processed...

UBUNTU-CVE-2026-97582

In the Linux kernel, the following vulnerability has been resolved: hwmon: gpio-fan Fix use-after-free in alarm work fanalarmirqhandler queues fandata-alarmwork, but nothing cancels it. fanalarmnotify dereferences fandata and its hwmon device. On unbind, devres frees the interrupt, which only wai...

UBUNTU-CVE-2026-98041

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't predict JMP32 pointer vs zero comparisons Consider the following program: r1 = mapvalue; / low 32 bits are zero at runtime / r6 = 0xdead000000000000; if w1 != 0 goto l1; l0: r1 += r6; r2 = u64 r1 + 0; exit; l1: r6 = 0;...

UBUNTU-CVE-2026-98048

In the Linux kernel, the following vulnerability has been resolved: bpf: don't rewrite bpffastcall patterns entered by a jump markfastcallpatternforcall must ensure that matched "spill; call; fill" instruction series is not interrupted by a jump. Otherwise the rewrite applied by...

UBUNTU-CVE-2026-98068

In the Linux kernel, the following vulnerability has been resolved: net/rds: don't let rdsconnshutdown consume a concurrent drop rdsconnshutdown finishes by moving the path from RDSCONNDISCONNECTING to RDSCONNDOWN, and also accepts RDSCONNERROR as the starting state of that final transition, so...

UBUNTU-CVE-2026-98074

In the Linux kernel, the following vulnerability has been resolved: bonding: do not clear curractiveslave prematurely when releasing all slaves When releasing all slaves during bond destruction all == true, bondreleaseone unconditionally clears bond-curractiveslave to NULL in every iteration. If ...

UBUNTU-CVE-2026-97531

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Skip vport under deletion in report ID acquisition qla24xxreportidacquisition format-1 handling walks ha-vplist under vportslock, takes a vrefcount on the matching vport and calls qlaupdatehostmap to register its...

UBUNTU-CVE-2026-97926

In the Linux kernel, the following vulnerability has been resolved: ufs: validate cylinder group metadata before caching it ufsreadcylinder copies the cylinder group index and the rotor positions straight from the on-disk group and caches them without any check: ucpi-ccgx = fs32tocpusb, ucg-cgcgx...

UBUNTU-CVE-2026-98046

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark bpfbtffindbynamekind as sleepable When bpfbtffindbynamekind finds a type in module BTF, it returns a new BTF object fd through btfnewfd. This reaches anoninodegetfd, which can sleep while allocating or expanding the...

UBUNTU-CVE-2026-97901

In the Linux kernel, the following vulnerability has been resolved: genetlink: pin family module during policy dump The generic netlink controller's policy dump keeps pointers to the target family's operation and policy tables in its callback state. A dump may be split across multiple skbs and...

UBUNTU-CVE-2026-97927

In the Linux kernel, the following vulnerability has been resolved: ufs: create the root dentry after loading cylinder metadata ufsfillsuper installed sb-sroot before it loaded the cylinder group structures for a writable mount: sb-sroot = dmakerootinode; ... if !sbrdonlysb if...

UBUNTU-CVE-2026-97616

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: release all action references on NEWACTION failure When a batched RTMNEWACTION request replaces an existing action, tcfidrcheckalloc takes a temporary reference on it. If a later action fails to initialize,...

UBUNTU-CVE-2026-98069

In the Linux kernel, the following vulnerability has been resolved: net/rds: acquire the fastpath locks in rdsconnshutdown rdsconnshutdown quiesces the transmit and receive-refill paths by waiting for RDSINXMIT and RDSRECVREFILL to be sampled clear, and then runs the transport shutdown and...

UBUNTU-CVE-2026-97956

In the Linux kernel, the following vulnerability has been resolved: net: netfailover: Fix the deadlock in netfailoverslavenamechange This is a sibling fix of commit b84c5632c7b3 "net: netfailover: Fix the deadlock in slave register". There is netdevlockops in the upper callers, so using netifopen...

UBUNTU-CVE-2026-97558

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix cifsFileInfo reference leak in deferred close When cifsclose defers a close, it hands the cifsFileInfo reference of the closing struct file to the queued work. Each execution of smb2deferredworkclose drops one su...

UBUNTU-CVE-2026-97561

In the Linux kernel, the following vulnerability has been resolved: smb: client: honor forceuid/forcegid when mapping SIDs to uid/gid When the administrator mounts with forceuid or forcegid uid=/gid= mount options, they expect all files to appear owned by the specified user/group. However, severa...

UBUNTU-CVE-2026-98134

In the Linux kernel, the following vulnerability has been resolved: bpf: checkcondjmpop: properly infer if register is null Nicholas Carlini reported a bug when verifier can incorrectly infer that a pointer is non-null. The bug occurs when two pointers are compared and one of them has a type w/o...

UBUNTU-CVE-2026-98130

In the Linux kernel, the following vulnerability has been resolved: sctp: fix a TOCTOU race in SCTPCMDTIMERSTART The SCTPCMDTIMERSTART handler checks timerpending before calling timerreduce. The timer can expire and detach between these operations, causing timerreduce to rearm the timer without...

UBUNTU-CVE-2026-98070

In the Linux kernel, the following vulnerability has been resolved: net/rds: acquire RDSINXMIT in rdstcpresetcallbacks rdstcpresetcallbacks quiesces the transmit path by setting the path state to RDSCONNRESETTING and then waiting for RDSINXMIT to be sampled clear before swapping the underlying...

UBUNTU-CVE-2026-98077

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntracksip: fix OOB read in sipskipwhitespace sipskipwhitespace returns dptr unchanged when its own loop exhausts the buffer dptr == limit, instead of NULL like its sibling sipfollowcontinuation returns on its own...

UBUNTU-CVE-2026-98081

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: finish active block group cleanup if callzonefinish fails dozonefinish clears BLOCKGROUPFLAGZONEISACTIVE before finishing the zones. If callzonefinish then fails it returned early, leaving the now inactive block gro...

UBUNTU-CVE-2026-97535

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound VP index against VPCTRL IOCB bitmap size The VP control IOCB selects its target virtual port by setting one bit in vpidxmap, a fixed 16-byte 128-bit array in both vpctrlentry24xx and vpctrlentry24xxext...