CVE-2026-31642

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix call removal to use RCU safe deletion Fix rxrpc call removal from the rxnet-calls list to use listdelrcu rather than listdelinit to prevent stuffing up reading /proc/net/rxrpc/calls from potentially getting into an...

UBUNTU-CVE-2026-31616

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fphonet: fix skb frags overflow in pnrxcomplete A broken/bored/mean USB host can overflow the skbsharedinfo-frags array on a Linux gadget exposing a Phonet function by sending an unbounded sequence of full-page OUT...

UBUNTU-CVE-2026-31559

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix missing NULL checks for kstrdup 1. Replace "offindnodebypath"/"" with "ofroot" to avoid multiple calls to "ofnodeput". 2. Fix a potential kernel oops during early boot when memory allocation fails while parsing CPU...

UBUNTU-CVE-2026-31543

In the Linux kernel, the following vulnerability has been resolved: crashdump: don't log dm-crypt key bytes in readkeyfromuserkeying When debug logging is enabled, readkeyfromuserkeying logs the first 8 bytes of the key payload and partially exposes the dm-crypt key. Stop logging any key bytes...

UBUNTU-CVE-2026-31646

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix pagepool error handling in lan966xfdmarxallocpagepool pagepoolcreate can return an ERRPTR on failure. The return value is used unconditionally in the loop that follows, passing the error pointer through...

UBUNTU-CVE-2026-31642

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix call removal to use RCU safe deletion Fix rxrpc call removal from the rxnet-calls list to use listdelrcu rather than listdelinit to prevent stuffing up reading /proc/net/rxrpc/calls from potentially getting into an...

CVE-2026-31597

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix use-after-free in ocfs2fault when VMFAULTRETRY filemapfault may drop the mmaplock before returning VMFAULTRETRY, as documented in mm/filemap.c: "If our return value has VMFAULTRETRY set, it's because the mmaplock may b...

UBUNTU-CVE-2026-31638

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Only put the call ref if one was acquired rxrpcinputpacketonconn can process a to-client packet after the current client call on the channel has already been torn down. In that case chan-call is NULL, rxrpctrygetcall retur...

UBUNTU-CVE-2026-31655

In the Linux kernel, the following vulnerability has been resolved: pmdomain: imx8mp-blk-ctrl: Keep the NOCHDCP clock enabled Keep the NOCHDCP clock always enabled to fix the potential hang caused by the NoC ADB400 port power down handshake...

UBUNTU-CVE-2026-31539

In the Linux kernel, the following vulnerability has been resolved: smb: smbdirect: introduce smbdirectsocket.recvio.credits.available The logic off managing recv credits by counting posted recvio and granted credits is racy. That's because the peer might already consumed a credit, but between...

UBUNTU-CVE-2026-31601

In the Linux kernel, the following vulnerability has been resolved: vfio/xe: Reorganize the init to decouple migration from reset Attempting to issue reset on VF devices that don't support migration leads to the following: BUG: unable to handle page fault for address: 00000000000011f8 PF:...

UBUNTU-CVE-2026-31664

In the Linux kernel, the following vulnerability has been resolved: xfrm: clear trailing padding in buildpolexpire buildexpire clears the trailing padding bytes of struct xfrmuserexpire after setting the hard field via memsetafter, but the analogous function buildpolexpire does not do this for...

UBUNTU-CVE-2026-31605

In the Linux kernel, the following vulnerability has been resolved: fbdev: udlfb: avoid divide-by-zero on FBIOPUTVSCREENINFO Much like commit 19f953e74356 "fbdev: fbpm2fb: Avoid potential divide by zero error", we also need to prevent that same crash from happening in the udlfb driver as it uses...

UBUNTU-CVE-2026-31598

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix possible deadlock between unlink and dioendiowrite ocfs2unlink takes orphan dir inodelock first and then ipallocsem, while in ocfs2dioendiowrite, it acquires these locks in reverse order. This creates an ABBA lock...

UBUNTU-CVE-2026-31552

In the Linux kernel, the following vulnerability has been resolved: wifi: wlcore: Return -ENOMEM instead of -EAGAIN if there is not enough headroom Since upstream commit e75665dd0968 "wifi: wlcore: ensure skb headroom before skbpush", wl1271txallocate and with it wl1271preparetxframe returns...

UBUNTU-CVE-2026-31595

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-vntb: Stop cmdhandler work in epfntbepccleanup Disable the delayed work before clearing BAR mappings and doorbells to avoid running the handler after resources have been torn down. Unable to handle kernel...

UBUNTU-CVE-2026-31563

In the Linux kernel, the following vulnerability has been resolved: net: macb: Use devconsumeskbany to free TX SKBs The napiconsumeskb function is not intended to be called in an IRQ disabled context. However, after commit 6bc8a5098bf4 "net: macb: Fix txptrlock locking", the freeing of TX SKBs is...

CVE-2026-31664

The CVE-2026-31664 issue resides in the Linux kernel xfrm subsystem: build_polexpire() fails to clear trailing padding in struct xfrm_user_polexpire, leaving uninitialized heap bytes that are sent to userspace via netlink multicast (XFRMNLGRP_EXPIRE). The consequence is potential leakage of kerne...

CVE-2026-31660

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: allocate rx skb before consuming bytes pn532receivebuf reports the number of accepted bytes to the serdev core. The current code consumes bytes into recvskb and may already hand a complete frame to pn533recvframe befo...

CVE-2026-31657

CVE-2026-31657 affects the Linux kernel batman-adv component. The flaw arises when batman-adv’s batadv_bla_add_claim() can replace claim->backbone_gw and drop the old gateway’s final reference while readers still follow the pointer. The netlink claim dump path dereferences claim->backbone_g...