CVE-2026-64257

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject overlapping data areas in SMB2 responses Commit 53b7c271f06b "smb: client: restrict implied bcc0 exemption to responses without data area" restricted the implied bcc0 length exception to responses without a da...

CVE-2026-64256

In the Linux kernel, the following vulnerability has been resolved: xfs: don't wrap around quota ids in dqiterate LOLLM noticed that qid is an unsigned 32-bit variable. If it happens to be set to XFSDQIDMAX due to a filesystem that actually has a dquot for IDMAX, then this addition will truncate ...

UBUNTU-CVE-2026-64315

In the Linux kernel, the following vulnerability has been resolved: crypto: caam - use printhexdumpdevel to guard key hex dumps Use printhexdumpdevel for dumping sensitive key material in setkey to avoid leaking secrets at runtime when CONFIGDYNAMICDEBUG is enabled...

UBUNTU-CVE-2026-64446

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix heap buffer overflow in rtwcfg80211setwpaie supplicantie is a 256-byte array in struct securitypriv. The WPA and WPA2 IE copy paths use: memcpypadapter-securitypriv.supplicantie, &pwpa0, wpaielen + 2; wher...

UBUNTU-CVE-2026-64497

In the Linux kernel, the following vulnerability has been resolved: iio: chemical: scd30: Cleanup initializations and fix sign-extension bug Include linux/bitfield.h for FIELDGET. Create new macros for bit manipulation in combination with manual bit manipulation being replaced with FIELDGET. The...

UBUNTU-CVE-2026-64366

In the Linux kernel, the following vulnerability has been resolved: HID: wacom: fix slab-out-of-bounds write in wacomwacqueueinsert wacomwacqueueinsert calls kfifoskip in a loop when the kfifo doesn't have enough space for the incoming report. If the kfifo is empty, kfifoskip reads stale data lef...

UBUNTU-CVE-2026-64477

In the Linux kernel, the following vulnerability has been resolved: x86,fs/resctrl: Prevent out-of-bounds access while offlining CPU when SNC enabled The architecture updates the cpumask in a domain's header to track which online CPUs are associated with the domain. When this mask becomes empty t...

UBUNTU-CVE-2026-64452

In the Linux kernel, the following vulnerability has been resolved: 6lowpan: fix NHC entry use-after-free on error path lowpannhcdouncompression looks up an NHC descriptor while holding lowpannhclock. If the descriptor has no uncompress callback, the error path drops the lock before printing...

UBUNTU-CVE-2026-64292

In the Linux kernel, the following vulnerability has been resolved: iommufd: Move vevent memory allocation outside spinlock The veventq memory allocation happens inside the spinlock. Given its depth is decided by the user space, this leaves a vulnerability, where userspace can allocate large queu...

UBUNTU-CVE-2026-64360

In the Linux kernel, the following vulnerability has been resolved: hfs/hfsplus: zero-initialize buffer in hfsbnoderead hfsbnoderead can return early without writing to the output buffer when isbnodeoffsetvalid fails or when checkandcorrectrequested length corrects the length to zero. Callers suc...

UBUNTU-CVE-2026-64422

In the Linux kernel, the following vulnerability has been resolved: net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes Reject invalid net.ipv4.tcpreordering values before they reach TCP socket state. The sysctl is stored as an int but copied into the u32 tp-reordering field for new...

UBUNTU-CVE-2026-64391

In the Linux kernel, the following vulnerability has been resolved: ksmbd: use opener credentials for ADS I/O Alternate data streams are stored as xattrs. Unlike regular file I/O, their read and write paths therefore call VFS xattr helpers which recheck inode permissions and LSM policy using the...

UBUNTU-CVE-2026-64280

In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DMA mapping length in afudmamapregion afuioctldmamap accepts a 64-bit length from userspace via DFLFPGAPORTDMAMAP ioctl without an upper bound check. The value is passed to afudmapinpages where npages is...

UBUNTU-CVE-2026-64376

In the Linux kernel, the following vulnerability has been resolved: firmwareloader: fix device reference leak in firmwareuploadregister firmwareuploadregister - fwcreateinstance - deviceinitialize After fwcreateinstance succeeds, the lifetime of the embedded struct device is expected to be manage...

UBUNTU-CVE-2026-64414

In the Linux kernel, the following vulnerability has been resolved: netfilter: handle unreadable frags sashiko reports: When an skb with unreadable fragments such as from devmem TCP, where skbfragsreadableskb returns false is processed by the u32 module, skbcopybits will safely return a negative...

UBUNTU-CVE-2026-64344

In the Linux kernel, the following vulnerability has been resolved: USB: idmouse: fix use-after-free on disconnect race mutexunlock may access the mutex structure after releasing the lock and therefore cannot be used to manage lifetime of objects directly unlike spinlocks and refcounts. 12 Use a...

UBUNTU-CVE-2026-64340

In the Linux kernel, the following vulnerability has been resolved: USB: legousbtower: fix use-after-free on disconnect race mutexunlock may access the mutex structure after releasing the lock and therefore cannot be used to manage lifetime of objects directly unlike spinlocks and refcounts. 12 U...

UBUNTU-CVE-2026-64348

In the Linux kernel, the following vulnerability has been resolved: usb: free iso schedules on failed submit EHCI and FOTG210 isochronous submits build an ehciisosched before linking the URB to the endpoint queue, and keep the staged schedule in urb-hcpriv until isostreamschedule and the link...

UBUNTU-CVE-2026-64426

In the Linux kernel, the following vulnerability has been resolved: iouring/nop: fix file reference leak with IOSQEFIXEDFILE NOP file-acquisition support choses between a fixed registered file and a normal fget'd file based on its own IORINGNOPFIXEDFILE flag in sqe-nopflags. However, a request's...

UBUNTU-CVE-2026-64405

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix null ptr deref in hciabortconn hciabortconn read hciskbeventhdev-sentcmd when a connection was pending, but hdev-sentcmd can be NULL while reqstatus is still HCIREQPEND, leading to a NULL pointer dereferen...