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-2026-31601

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-2026-31638

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-2026-31563

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...

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...

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...

CVE-2026-31653 mm/damon/sysfs: dealloc repeat_call_control if damon_call() fails

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc repeatcallcontrol if damoncall fails damoncall for repeatcallcontrol of DAMONSYSFS could fail if somehow the kdamond is stopped before the damoncall. It could happen, for example, when te damon context was...

EUVD-2026-25545

In the Linux kernel, the following vulnerability has been resolved: mm/damon/stat: deallocate damoncall failure leaking damonctx damonstatstart always allocates the module's damonctx object damonstatcontext. Meanwhile, if damoncall in the function fails, the damonctx object is not deallocated...

CVE-2026-31637 rxrpc: reject undecryptable rxkad response tickets

In the Linux kernel, the following vulnerability has been resolved: rxrpc: reject undecryptable rxkad response tickets rxkaddecryptticket decrypts the RXKAD response ticket and then parses the buffer as plaintext without checking whether cryptoskcipherdecrypt succeeded. A malformed RESPONSE can...

CVE-2026-31637

The CVE-2026-31637 vulnerability lies in the Linux kernel rxrpc subsystem. Specifically, rxkad_decrypt_ticket() decrypts the RXKAD response ticket and then parses the buffer as plaintext without confirming that crypto_skcipher_decrypt() succeeded. A malformed RXKAD response could use a non-block-...

CVE-2026-31631 rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix buffer overread in rxgkdoverifyauthenticator Fix rxgkdoverifyauthenticator to check the buffer size before checking the nonce...

CVE-2026-31627

The CVE-2026-31627 entry concerns the Linux kernel i2c s3c24xx driver, where the first byte of an SMBUS message (the size) is not validated before processing. This could allow out-of-range SMBUS block lengths to be acted on, with potential impact to I2C SMBUS block operations. The description not...

EUVD-2026-25520

In the Linux kernel, the following vulnerability has been resolved: i2c: s3c24xx: check the size of the SMBUS message before using it The first byte of an i2c SMBUS message is the size, and it should be verified to ensure that it is in the range of 0..I2CSMBUSBLOCKMAX before processing it. This i...

CVE-2026-31621 bnge: return after auxiliary_device_uninit() in error path

In the Linux kernel, the following vulnerability has been resolved: bnge: return after auxiliarydeviceuninit in error path When auxiliarydeviceadd fails, the error block calls auxiliarydeviceuninit but does not return. The uninit drops the last reference and synchronously runs bngeauxdevrelease,...

CVE-2026-31619 ALSA: fireworks: bound device-supplied status before string array lookup

In the Linux kernel, the following vulnerability has been resolved: ALSA: fireworks: bound device-supplied status before string array lookup The status field in an EFW response is a 32-bit value supplied by the firewire device. efrstatusnames has 17 entries so a status value outside that range go...

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:...

CVE-2026-31601

CVE-2026-31601 affects the Linux kernel vfio/xe driver. When resetting a Virtual Function (VF) device that does not support migration, a kernel page fault can occur due to the vfio_pci core structure not being fully initialized until migration init. The root cause described in connected docs is t...

CVE-2026-31593

CVE-2026-31593 is a Linux kernel KVM SEV SNP issue. The vulnerability arises when updating an already-launched and encrypted vCPU state: attempting to sync the vCPU's VMSA can trigger an SEV-SNP cryptographic memory protection (RMP) violation, causing a host panic/DoS. Technical details across mu...