UBUNTU-CVE-2026-63899

In the Linux kernel, the following vulnerability has been resolved: USB: serial: mxuport: fix memory corruption with small endpoint Make sure that the bulk-out endpoint max packet size is at least eight bytes to avoid user-controlled slab corruption should a malicious device report a smaller size...

UBUNTU-CVE-2026-64045

In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - use cached peer pointer in ovpntcpclose ovpntcpclose loads the ovpnsocket via rcudereferenceskuserdata under rcureadlock, takes a reference on sock-peer, caches the peer pointer in a local, and drops the read lock. It...

UBUNTU-CVE-2026-64118

In the Linux kernel, the following vulnerability has been resolved: qed: fix double free in qedcxttablesalloc If one of the later PF or VF CID bitmap allocations fails, qedcidmapalloc jumps to cidmapfail and frees the previously allocated CID bitmaps before returning an error. qedcxttablesalloc...

UBUNTU-CVE-2026-63929

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Fix DMA fence leak in iiobufferenqueuedmabuf iiobufferenqueuedmabuf allocates a struct iiodmafence 104 bytes, kmalloc-128 via kmallocobj+dmafenceinit, which sets the initial kref to 1. It then calls dmaresvaddfence...

UBUNTU-CVE-2026-64124

In the Linux kernel, the following vulnerability has been resolved: net: devmem: reject dma-buf bind with non-page-aligned size or SG length netdevmembinddmabuf trusts dmabuf-size and sgdmalen to be PAGESIZE multiples without checking: - txvec is sized dmabuf-size / PAGESIZE, and netdevmemgetniov...

UBUNTU-CVE-2026-64150

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftinner: release locallock before re-enabling softirqs Quoting sashiko: In the error path, localbhenable is called before localunlocknestedbh...

UBUNTU-CVE-2026-63990

In the Linux kernel, the following vulnerability has been resolved: bonding: refuse to enslave CAN devices syzbot reported a kernel paging request crash in canrxunregister inside net/can/afcan.c. The crash occurs because a virtual CAN device vxcan is being enslaved to a bonding master. During the...

UBUNTU-CVE-2026-53373

In the Linux kernel, the following vulnerability has been resolved: mm/vma: do not try to unmap a VMA if mmapprepare invoked from mmap The mmapprepare hook functionality includes the ability to invoke mmapprepare from the mmap hook of existing 'stacked' drivers, that is ones which are capable of...

UBUNTU-CVE-2026-63923

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: validate body pcifunc in rvumboxhandlerrepeventnotify rvumboxhandlerrepeventnotify in drivers/net/ethernet/marvell/ octeontx2/af/rvurep.c queues a sender-controlled REPEVENTNOTIFY request body verbatim, and...

UBUNTU-CVE-2026-63883

In the Linux kernel, the following vulnerability has been resolved: serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following race can occur all steps serialized by uartportlock: 1. DMA starts:...

UBUNTU-CVE-2026-63987

In the Linux kernel, the following vulnerability has been resolved: ethtool: coalesce: cap profile updates at NETDIMPARAMSNUMPROFILES ethnlupdateprofile walks the ETHTOOLAPROFILEIRQMODERATION nest list with an index 'i' and writes newprofilei++ without bounding i. The destination is kmemdup'd at...

UBUNTU-CVE-2026-64108

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix busy dentry used after unmounting Since commit 340cea84f691c "cifs: open files should not hold ref on superblock", cifs file only holds the dentry refcnt, the cifs file close workcfile-deferred could be executed after...

UBUNTU-CVE-2026-64004

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucvsocksetsockopt and wrap the whole switch in locksock/releasesock. The pre-existing SOMSGLIMIT-only lock becomes redundant and is removed. Any AFIUCV HIPER user can potentially crash...

UBUNTU-CVE-2026-63851

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set nouserfence for VCN v4.0.5 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. cherry picked from commit...

UBUNTU-CVE-2026-63982

In the Linux kernel, the following vulnerability has been resolved: net/sched: Fix ethx:ingress - ethy:egress - ethx:ingress mirred loop When mirred redirects to ingress from either ingress or egress the loop state from schedmirreddev array dev is lost because of 1 the packet deferral into the...

UBUNTU-CVE-2026-63911

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: reset runtime state when cloning SAs iptfsclonestate clones the IPTFS mode data with kmemdup. This copies runtime objects which must not be shared with the original SA, including the embedded skbuffhead, hrtimers,...

UBUNTU-CVE-2026-64147

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix debugfslookup dentry leak and error handling debugfslookup returns a dentry with an elevated reference count that must be released with dput. The current code discards the returned dentry without calling dput, causin...

UBUNTU-CVE-2026-64177

In the Linux kernel, the following vulnerability has been resolved: phonet/pep: disable BH around forwarded skreceiveskb The networking receive path is usually run from softirq context, but protocols that take the socket lock may have packets stored in the backlog and processed later from process...

UBUNTU-CVE-2026-64106

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Reject restored DTE with out-of-range numeventidbits Userspace can restore an ITS Device Table Entry whose Size field encodes more EventID bits than the virtual ITS supports. The live MAPD path rejects that...

UBUNTU-CVE-2026-64030

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bounds-check linkid in ieee80211mlepcs IEEE80211MLESTAEPCSCONTROLLINKID is 0x000f, so linkid extracted from a PRIOACCESS ML element PERSTAPROFILE subelement can be 0..15. sdata-link has IEEE80211MLDMAXNUMLINKS 15...