UBUNTU-CVE-2026-97936

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix memory corruption from the histogram stacktrace modifier parsefield sets HISTFIELDFLSTACKTRACE from the ".stacktrace" modifier before it looks the field name up, and nothing afterwards checks that the name resolved t...

UBUNTU-CVE-2026-97939

In the Linux kernel, the following vulnerability has been resolved: ipmr: account multicast table and route memory A netadmin in a user+net namespace can create many IPv4 and IPv6 multicast routing tables with MRTTABLE and MRT6TABLE. Each unseen id allocates an mrtable via the shared mrtablealloc...

UBUNTU-CVE-2026-97944

In the Linux kernel, the following vulnerability has been resolved: x86/cfi: Fix FineIBT hash offset in cfigetfunchash The switch of the FineIBT preamble from "subl $hash, %r10d" to the shorter "subl $hash, %eax" moved the hash immediate from offset 7 to offset 5 of the preamble...

UBUNTU-CVE-2026-97945

In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix user-space data loss with MADVFREE and THP Some of users of Polars a data analytics library have lost production data from this bug. They seem to have just the right combination of huge pages, MADVFREE and heavy recla...

UBUNTU-CVE-2026-97949

In the Linux kernel, the following vulnerability has been resolved: configfs: unhash the dentry before dropping the item in rmdir configfsgetconfigitem treats a hashed dentry as proof that sd-selement is a live configitem. configfsrmdir breaks that: simplermdir leaves the dentry hashed, the last...

UBUNTU-CVE-2026-97954

In the Linux kernel, the following vulnerability has been resolved: net/rds: fix tcp stream corruption with large pages rdsmessagemappages assigns PAGESIZE bytes to every scatterlist entry, even when totallen ends in a partial page. The RDS congestion map is defined as 8192 bytes, so on systems...

UBUNTU-CVE-2026-97970

In the Linux kernel, the following vulnerability has been resolved: watchdog: msc313e: Avoid division by zero clkgetrate could return 0. Avoid a division by zero panic...

UBUNTU-CVE-2026-97978

In the Linux kernel, the following vulnerability has been resolved: eth: ice: don't dereference pointers from TPprintk After forwarding net-next during the v7.3 merge window we started seeing: TRACE EVENT ERROR: Event icetxdimwork has double dereference in TPprintk: REC-qvector-tx.txring-qindex...

UBUNTU-CVE-2026-97985

In the Linux kernel, the following vulnerability has been resolved: afunix: Update last skb marker in manageoob. Fahad Alharbi reported that blocking recvMSGPEEK could hog CPU due to OOB skb. In the following cases, manageoob skips OOB skbs and returns NULL for the last recvMSGPEEK:...

UBUNTU-CVE-2026-98006

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...

UBUNTU-CVE-2026-98009

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...

UBUNTU-CVE-2026-98016

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...

UBUNTU-CVE-2026-98036

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...

UBUNTU-CVE-2026-98037

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...

UBUNTU-CVE-2026-98040

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark the zero register precise for a register-form NULL check checkcondjmpop accepts "if rA rB" as a NULL check for a nullable pointer rA when rB is a scalar known to be zero, lifts PTRMAYBENULL from rA in the corresponding...

UBUNTU-CVE-2026-98045

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark faultable stack helpers as sleepable The faultable variants of bpfgetstack and bpfgettaskstack pass mayfault=true into the common stack collection code. Resolving user-space build IDs may then call buildidparsefile and...

UBUNTU-CVE-2026-98049

In the Linux kernel, the following vulnerability has been resolved: bpf: zero extend the result of an arena 32-bit cmpxchg bpfconvertctxaccesses rewrites an atomic on an arena pointer from BPFSTX | BPFATOMIC to BPFSTX | BPFPROBEATOMIC, and it runs before bpfoptsubregzextlo32rndhi32. That pass emi...

UBUNTU-CVE-2026-98058

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark syscall helpers as sleepable bpfsysbpf executes the bpf2 syscall body, which can take mutexes, allocate with GFPKERNEL, and wait for an RCU grace period. bpfsysclose reaches closefd and filpclose, which can sleep as wel...

UBUNTU-CVE-2026-98062

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark signal tracepoint siginfo arguments as scalar The signalgenerate and signaldeliver tracepoints declare their info argument as a struct kernelsiginfo pointer. btfctxaccess therefore treats it as a trusted pointer for tpb...

UBUNTU-CVE-2026-98065

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject key-less BTF for hash maps mapcheckbtf allows a key-less BTF btfkeytypeid == 0 only for maps that have a -mapcheckbtf callback, and leaves the actual decision to that callback. Hash maps used to have no -mapcheckbtf, ...

UBUNTU-CVE-2026-98071

In the Linux kernel, the following vulnerability has been resolved: net/rds: clear cpflags bits individually in rdsconnpathreset rdsconnpathreset wipes the whole flag word with a plain cp-cpflags = 0 store. Every other accessor of that word uses atomic bitops, and some of them can run concurrentl...

UBUNTU-CVE-2026-98072

In the Linux kernel, the following vulnerability has been resolved: net/rds: use wqhassleeper in releaseinxmit releaseinxmit clears RDSINXMIT with clearbitunlock and then checks waitqueueactive to decide whether anyone needs waking. clearbitunlock is only a release operation: it orders the critic...

UBUNTU-CVE-2026-98079

In the Linux kernel, the following vulnerability has been resolved: btrfs: zstd: fix lost wakeup when waiting for a workspace A writer can sleep forever in zstdgetworkspace even though a workspace is free. When zstdallocworkspace fails, the task is queued on zwsm-wait and schedules unconditionall...

UBUNTU-CVE-2026-98082

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix the possible bioclist memory leak during error There are two possible ways to leak bioc memory on btrfsorderedextent::bioclist: - An error occurred for btrfsinsertoneraidextent Then the function btrfsinsertraidextent...

UBUNTU-CVE-2026-98086

In the Linux kernel, the following vulnerability has been resolved: ALSA: ump: do not touch legacyrmidi before it exists sndumpparseendpoint sets ump-parsed on every exit, including error, before the caller attaches the legacy rawmidi device. umphandleepnamemsg then treats parsed as "legacyrmidi ...

UBUNTU-CVE-2026-98094

In the Linux kernel, the following vulnerability has been resolved: staging: fbtft: make dirtylock IRQ-safe fbtftmkdirty can be reached from the fbcon rendering path while processing printk in hardirq context. Meanwhile, dirtylock is also taken by fbtftdeferredio in workqueue context with local...

UBUNTU-CVE-2026-98105

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: oatc6: Improve the error recovery When oversubscribed traffic causes lot of buffer overflow errors, probably due to loss of data chunks, driver fails to find a data chunk with endvalid bit set, before it runs out o...

UBUNTU-CVE-2026-98111

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: validate version TLV value lengths btintelparseversiontlv verifies that a complete TLV is present in the response, but it does not ensure that the value is long enough for the specific TLV type. A short value...

UBUNTU-CVE-2026-98114

In the Linux kernel, the following vulnerability has been resolved: ksmbd: propagate DACL parsing errors parsedacl silently accepts truncated ACEs and allocation failures, allowing setinfosec to continue with an incomplete ACL conversion. Return parsing and allocation errors to parsesecdesc so...

UBUNTU-CVE-2026-98115

In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely drain sessions during logoff SMB3 multichannel allows requests for one session to run on multiple connections. Wait for all channels bound to a session before freeing shared session objects. A deferred byte-range lo...

UBUNTU-CVE-2026-98118

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix readahead synchronisation issues by loading all folios upfront There are some synchronisation issues that derive from the app thread adding more folios to the rolling buffer whilst the collector thread is looking at th...

UBUNTU-CVE-2026-98122

In the Linux kernel, the following vulnerability has been resolved: vxlan: mdb: Fix use-after-free in vxlanmdbremotesrcdel vxlanmdbisvalidsource, which validates MDBEATTRSOURCE and every MDBEATTRSRCLIST member, accepts the all-zeros address. A source list is only accepted on a , G entry, whose...

UBUNTU-CVE-2026-98135

In the Linux kernel, the following vulnerability has been resolved: ntfs: reject invalid sectorspercluster in the boot sector isbootsectorntfs checks the boot sector's sectorspercluster field with a range test that rejects 0x81..0xf3 but accepts 0 and other non-power-of-two counts. A zero value...

UBUNTU-CVE-2026-98138

In the Linux kernel, the following vulnerability has been resolved: ntfs: do not mark the volume clean in syncfs when errors were recorded ntfsputsuper and the remount-read-only path both clear the dirty bit only when NVolErrorsvol is false. ntfssyncfs clears it unconditionally, so any sync on a...

UBUNTU-CVE-2026-98146

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Remove countedby from struct amdxdnacmdchain struct amdxdnacmdchain contains a flexible array annotated with countedbycommandcount. Since the structure is stored in shared AMDXDNABOSHARE memory, userspace can modif...

UBUNTU-CVE-2026-98150

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix BPFFCPU validation for sparse CPU IDs BPFFCPU stores the target CPU ID in the upper 32 bits of the map operation flags. bpfmapcheckopflags currently compares that ID with numpossiblecpus, which is the number of possible...

UBUNTU-CVE-2026-98155

In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Address potential out-of-bounds read in respworker Although 'commit 2feec5ae5df7 "accel/qaic: Handle DBC deactivation if the owner went away"' fixes the scenario it was intended for by walking the message and only...

UBUNTU-CVE-2026-98157

In the Linux kernel, the following vulnerability has been resolved: EDAC/devicesysfs: Use kstrtouint for pollmsec to prevent truncation The pollmsec sysfs store file uses simplestrtoul which accepts an unsigned long, but the target field pollmsec is unsigned int. On 64-bit systems, a value UINTMA...

UBUNTU-CVE-2026-98015

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...

UBUNTU-CVE-2026-97966

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: reset HTB scheduler topology before freeing queues HTB offload programs NIXAFTLxXTOPOLOGY on QoS-allocated scheduler queues via otx2qostxschqsetparenttopology, but teardown freed those queues without clearing...

UBUNTU-CVE-2026-97522

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix bad accounting in mptcpsubflowpushpending If subflowpushpending errors out we should avoid updating the copied byte counters, to avoid mismatch push call later on...

UBUNTU-CVE-2026-97524

In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid unneeded actions on subflow reset Once in a blue moon, the mptcp receive path can recursively call mptcpdataready via state change under unlucky error conditions, and then try to hold the data lock again. Break the...

UBUNTU-CVE-2026-97529

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Validate BSG requestlen before reading vendorcmd The FC BSG transport allocates job-request via memdupuser using the exact user-supplied requestlen. For FCBSGHSTVENDOR, fcbsghostdispatch only guarantees requestlen...

UBUNTU-CVE-2026-97534

In the Linux kernel, the following vulnerability has been resolved: f2fs: accurately adjust freesections during freesegmentrange In freesegmentrange, MAINSECSsbi is temporarily reduced by secs to restrict block allocation to the safe remaining main area while valid blocks in the truncated range a...

UBUNTU-CVE-2026-97549

In the Linux kernel, the following vulnerability has been resolved: xfs: fix under-reservation of blocks when repairing sf directories Whilst running QA on XFS for-next as of 7.3-rc2 with MKFSOPTIONS="-n size=8192", I observed the following trimmed dmesg splat: XFS: Assertion failed: args-total =...

UBUNTU-CVE-2026-97551

In the Linux kernel, the following vulnerability has been resolved: xfs: initialise args-total for parent pointer updates xfsparentdaargsinit builds an xfsdaargs from a zeroed xfsparentargs kmemcachezalloc, leaving args-total == 0. xfsdagrowinodeint treats that field as a running block reservatio...

UBUNTU-CVE-2026-97554

In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid using uninitialized SIDs in cifsposixtofattr cifsposixtofattr ignores the return value of posixinfoparse. When a malformed POSIX directory entry is encountered e.g. invalid SID lengths from an untrusted server,...

UBUNTU-CVE-2026-97555

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix heap overflow in DACL owner/group rewrite When idmodetocifsacl rewrites an existing DACL, it allocates a buffer sized according to the on-disk DACL length reported by daclptr-size. However, replacesidsandcopyaces...

UBUNTU-CVE-2026-97560

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix one-byte OOB read in smb2parsenativesymlink When parsing a share-root relative native symlink, memcpy copies smbtarget+1 skipping the leading separator but uses strlensmbtarget+1 as the length, reading one byte...

UBUNTU-CVE-2026-97610

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix uninitialized return value in netfsunbufferedwrite If preparation of the first subrequest fails, netfsunbufferedwrite exits its loop before ret is initialized. The empty-iterator check can do the same. For synchronous...