EUVD-2026-45662

In the Linux kernel, the following vulnerability has been resolved: scsi: scsitransportfc: Widen FPIN pname walker counter to u32 An adjacent Fibre Channel fabric actor that can deliver an FPIN ELS frame to an lpfc or qla2xxx Linux initiator can trigger a non-return in the generic FC transport...

CVE-2026-63888

The CVE concerns the Linux kernel iSCSI target: two related Text-phase bugs in iscsit_handle_text_cmd() were fixed. First, a CRC32C DataDigest overread occurs because rx_size includes the CRC length when calling iscsit_crc_buf(), reading 4 bytes past the allocated text_in. The patch fixes this by...

CVE-2026-63884 drm/i915: Fix potential UAF in TTM object purge

In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UAF in TTM object purge TLDR: The bo-ttm object might be changed by calling ttmbovalidate, move casting it to an i915tt object later to actually get the right pointer. A user reported hitting the following...

CVE-2026-63881

CVE-2026-63881 affects the Linux kernel DRM/AMDKFD debugger path. The get_queue_ids() function computed array_size as num_queues * sizeof(uint32_t), which could overflow on 32-bit size_t builds. The fix replaces this with a safe-sized approach using array_size(), causing saturation to SIZE_MAX on...

CVE-2026-63877

The CVE-2026-63877 entry concerns the Linux kernel DZ serial driver (serial: dz) and its transition from legacy probing to a platform device model. A null-pointer dereference occurred when the first serial port was initialized, caused by using a port parent device that could be derived from a nul...

CVE-2026-63878 drm/amdgpu: check num_entries in GEM_OP GET_MAPPING_INFO

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: check numentries in GEMOP GETMAPPINGINFO kvcallocargs-numentries, sizeofvmentries, GFPKERNEL at amdgpugem.c:1050 uses the user-supplied numentries directly without any upper bounds check. Since numentries is a u32 and...

CVE-2026-63862

The CVE-2026-63862 vulnerability affects the Linux kernel’s PCI subsystem for Mediatek Gen3 hardware. In mtk_pcie_setup_irq(), IRQ domains were allocated before obtaining the controller’s IRQ; if obtaining the IRQ fails, allocated domains were not cleaned up, leading to leakage. The mitigation is...

CVE-2026-63860 RDMA/core: Prefer NLA_NUL_STRING

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLANULSTRING These attributes are evaluated as c-string passed to strcmp, but NLASTRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nlastrcmp and needs to adjust printf fmt...

CVE-2026-63855

CVE-2026-63855 affects the Linux kernel's drm/amdgpu/vcn component, specifically VCN v2.5 encoder/decoder rings. The vulnerability arises because these rings do not support 64-bit user fence writes, leading to rejection of CS submissions that use user fences. A fix has been applied by setting no_...

CVE-2026-63849 drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 enc ring

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set nouserfence for VCN v5.0.1 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...

CVE-2026-63816

In the Linux kernel, the following vulnerability has been resolved: f2fs: atomic: fix UAF issue on f2fsinodeinfo.atomicinode - ioctlF2FSIOCGARBAGECOLLECTRANGE - shrink - f2fsgc - gcdatasegment - radatablockcowinode - mapping = F2FSIinode-atomicinode-imapping : f2fsiscowfilecowinode is true -...

UBUNTU-CVE-2026-63816

In the Linux kernel, the following vulnerability has been resolved: f2fs: atomic: fix UAF issue on f2fsinodeinfo.atomicinode - ioctlF2FSIOCGARBAGECOLLECTRANGE - shrink - f2fsgc - gcdatasegment - radatablockcowinode - mapping = F2FSIinode-atomicinode-imapping : f2fsiscowfilecowinode is true -...

UBUNTU-CVE-2026-63821

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: usb: fix memory leaks on USB write failures When rtwusbwriteport fails to submit a USB Request Block URB e.g., due to device disconnect or ENOMEM, the completion callback is never executed. Currently, the driver...

UBUNTU-CVE-2026-63826

In the Linux kernel, the following vulnerability has been resolved: fbdev: fix use-after-free in storemodes storemodes replaces a framebuffer's modelist with modes from userspace. On success it frees the old modelist with fbdestroymodelist. Two fields still point into that freed list. One pointer...

UBUNTU-CVE-2026-53398

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFONONAME decode error cleanup nfsd4decodesecinfononame currently initializes sinexp after decoding sinstyle. If the XDR stream is truncated, the decoder returns nfserrbadxdr before sinexp is initialized. Since comm...

UBUNTU-CVE-2026-63823

In the Linux kernel, the following vulnerability has been resolved: keys: Pin requestkeyauth payload in instantiate paths A: requestkey B: KEYCTLINSTANTIATEIOV ================ ========================= create auth key store rka in auth key wait for helper get auth key load rka from auth key copy...

UBUNTU-CVE-2026-63803

In the Linux kernel, the following vulnerability has been resolved: hdlcppp: sync per-proto timers before freeing hdlc state Each PPP control protocol LCP/IPCP/IPV6CP embedded in struct ppp registers a timer via timersetup. That struct ppp is the hdlc-state allocation, which detachhdlcprotocol...

UBUNTU-CVE-2026-63824

In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctlpkeyparamsget2 The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the siz...

UBUNTU-CVE-2026-53388

In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before replacing page cache folio fusetrymovefolio unlocks the request on entry but does not re-lock it on the success path. This means fusechanabort can end the request and free the fuseioargs eg...

UBUNTU-CVE-2026-63799

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Fix OOB clearbit when CID is MMCIDUNSET in fixup path In mmcidfixupcpustotasks, when rq-curr has the target mm and mmcid.active is set, the CID is checked with cidintransit before setting the transition bit. In per-C...