UBUNTU-CVE-2026-89485

In the Linux kernel, the following vulnerability has been resolved: lockd: pin next file across nlminspectfile lock-drop nlmtraversefiles pins the current file with fcount++ across a mutexunlock for nlminspectfile, but nothing pins the saved next pointer. A concurrent nlmreleasefile can kfree the...

UBUNTU-CVE-2026-89683

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix dentry ref leak on V4ROOT export filehandle lookup nfsdsetfhdentry leaks the dentry reference from exportfsdecodefhraw when the NFS3FHSIZE or NFSFHSIZE switch cases detect NFSEXPV4ROOT and goto out. The out: label calls...

UBUNTU-CVE-2026-89644

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

UBUNTU-CVE-2026-89556

In the Linux kernel, the following vulnerability has been resolved: module: validate string table section types In elfvaliditycachesechdrs, section sizes and offsets are validated, unless the section type is SHTNULL or SHTNOBITS. Later, elfvaliditycachesecstrings and elfvaliditycacheindexstr acce...

UBUNTU-CVE-2026-89467

In the Linux kernel, the following vulnerability has been resolved: power: supply: qcombattmgr: fix use-after-free qcombattmgrpdrnotify queues enablework when the PMIC GLINK service comes up, and the worker recovers battmgr through containerof to issue firmware requests. The PMIC GLINK client sta...

UBUNTU-CVE-2026-89550

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauthgss: enforce krb5 token minimum length svcauthgssunwrappriv validates only an upper bound on the wire-supplied opaque length before handing the buffer to gssunwrap: if len xdrstreamremainingxdr goto unwrapfailed;...

UBUNTU-CVE-2026-89581

In the Linux kernel, the following vulnerability has been resolved: bpf, x86: Fix per-CPU address resolution into an extended register The destination of the per-CPU address MOV is encoded in ModRM.reg, which is extended by REX.R, but the REX prefix is built with add1mod, which sets REX.B. REX.B...

UBUNTU-CVE-2026-89533

In the Linux kernel, the following vulnerability has been resolved: svcrdma: Fix offset arithmetic in readchunkrange svcrdmareadchunkrange walks a Read chunk's segment list to build a sub-range starting at byte offset and spanning length bytes for a Position-Zero or Call chunk. Two arithmetic...

UBUNTU-CVE-2026-89501

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...

UBUNTU-CVE-2026-89443

In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate level in perf mask ioctls isstifgetperflevelmask and isstifgetbasefreqmask use the user-provided level as an index into perflevels via readpplevelinfo and readbflevelinfo, but neither helper validates...

UBUNTU-CVE-2026-89573

In the Linux kernel, the following vulnerability has been resolved: dm array: reject an array block whose value size is not the caller's arrayblockcheck can only compare the header against itself, so a block with valuesize 4 and maxentries 1018 is internally consistent and passes. dm-cache keeps...

UBUNTU-CVE-2026-89629

In the Linux kernel, the following vulnerability has been resolved: HID: corsair-void: Check size of status and firmware events before reading them Malformed status and firmware events could cause an out-of-bounds read since the size wasn't being checked. Check the size and warn on unexpected...

UBUNTU-CVE-2026-80984

In the Linux kernel, the following vulnerability has been resolved: net/smc: do not dereference an unset send buffer on the SMC-D teardown path smcclosestreamwait calls smctxpreparedsends from inside its skwaitevent condition, and skwaitevent evaluates that condition once with the socket lock...

UBUNTU-CVE-2026-89544

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: fix gssxdecoptionarray error path bugs Four coupled defects in the gssx XDR option-array decoder make the error paths unsafe: a NULL deref in the caller, a refcount leak on the decoded groupinfo, and a latent use-after-fr...

UBUNTU-CVE-2026-89478

In the Linux kernel, the following vulnerability has been resolved: sctp: drop a chunk if its transport was removed sctprcv resolves the transport once per packet and leaves it in chunk-transport. The lookup reference, or the one sctpaddbacklog takes if the socket is owned by userspace, keeps it...

UBUNTU-CVE-2026-89597

In the Linux kernel, the following vulnerability has been resolved: fbdev: uvesafb: unregister connector callback on init failure uvesafbinit registers the v86d connector callback before registering the platform driver. If platformdriverregister fails, the function returns the error directly and...

UBUNTU-CVE-2026-89577

In the Linux kernel, the following vulnerability has been resolved: dm-io: report non-retryable errors separatedly The error codes BLKSTSNOTSUPP and BLKSTSINVAL should not cause leg failure on dm-raid1. This patch changes the interface to dm-io, so that it reports two error bitmaps - errorbits an...

UBUNTU-CVE-2026-81016

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd/pmc: Propagate SMU errors and validate S2D address amdstbs2dinit discards the return value of several S2D SMU commands. When the SMU refuses a command e.g. "SMU cmd failed. err: 0xff" the failure is only noticed...

UBUNTU-CVE-2026-81011

In the Linux kernel, the following vulnerability has been resolved: platform/x86: hp-bioscfg: pass validated element count to package parsers The per-type package parsers are handed the wrong element count. hpinitbiospackageattribute validates obj-package.count and then calls one of the five...

UBUNTU-CVE-2026-89574

In the Linux kernel, the following vulnerability has been resolved: dm array: validate array block headers on read arrayblockcheck validates blocknr and csum and nothing else, while nodecheck, next to it, has bounded the structural fields since both were written. dmarraycursornext takes its loop...