UBUNTU-CVE-2026-64375

In the Linux kernel, the following vulnerability has been resolved: proc: protect ptracemayaccess with execupdatelock FD links procpidgetlink and procpidreadlink currently look up the task from the pid once, then do the ptrace access check on that task, then look up the task from the pid a second...

UBUNTU-CVE-2026-64371

In the Linux kernel, the following vulnerability has been resolved: proc: protect ptracemayaccess with execupdatelock part 1 Fix the easy cases where procfs currently calls ptracemayaccess without execupdatelock protection, where the fix is to simply add the extra lock or use mmaccess: -...

UBUNTU-CVE-2026-64388

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

UBUNTU-CVE-2026-64442

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in IE loops in issueassocreq and joincmdhdl Two IE parsing loops are missing the header bounds checks before they dereference pIE-length: - issueassocreq walks pmlmeinfo-network.ies to build the...

RHSA-2026:0921 Red Hat Security Advisory: go-toolset:rhel8 security update

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EUVD-2026-49037

In the Linux kernel, the following vulnerability has been resolved: xfrm: move policybydst RCU sync from per-netns .exit to .preexit The struct pernetoperations docstring in include/net/netnamespace.h explicitly warns against blocking RCU primitives in .exit handlers: Exit methods using blocking...

CVE-2026-64525

In the Linux kernel, the following vulnerability has been resolved: xfrm: move policybydst RCU sync from per-netns .exit to .preexit The struct pernetoperations docstring in include/net/netnamespace.h explicitly warns against blocking RCU primitives in .exit handlers: Exit methods using blocking...

CVE-2026-64525 xfrm: move policy_bydst RCU sync from per-netns .exit to .pre_exit

In the Linux kernel, the following vulnerability has been resolved: xfrm: move policybydst RCU sync from per-netns .exit to .preexit The struct pernetoperations docstring in include/net/netnamespace.h explicitly warns against blocking RCU primitives in .exit handlers: Exit methods using blocking...

CVE-2026-64525

In the Linux kernel, the following vulnerability has been resolved: xfrm: move policybydst RCU sync from per-netns .exit to .preexit The struct pernetoperations docstring in include/net/netnamespace.h explicitly warns against blocking RCU primitives in .exit handlers: Exit methods using blocking...

CVE-2026-64513 KVM: x86: Unconditionally recompute CR8 intercept on PPR update

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Unconditionally recompute CR8 intercept on PPR update The TPRTHRESHOLD field in the VMCS is used by VMX to induce VM exits when the guest's virtual TPR falls under the specified threshold, allowing KVM to inject...

CVE-2026-64513

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Unconditionally recompute CR8 intercept on PPR update The TPRTHRESHOLD field in the VMCS is used by VMX to induce VM exits when the guest's virtual TPR falls under the specified threshold, allowing KVM to inject...

CVE-2026-64459

Summary: CVE-2026-64459 is a use-after-free risk in the Linux kernel TCP-AO code. A previous patch removed the RCU-based freeing of TCP-AO/TCP-MD5 info in tcp_ao_destroy_sock(), which could allow a race during socket connect when a socket is in TCP_SYN_SENT and still discoverable in the hash/inbo...

CVE-2026-64459

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

CVE-2026-64459 tcp: restore RCU grace period in tcp_ao_destroy_sock

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcpaodestroysock Commit 51e547e8c89c "tcp: Free TCP-AO/TCP-MD5 info/keys without RCU" removed the callrcu callback from tcpaodestroysock, arguing that "the destruction of info/keys is delayed unti...

CVE-2026-64443

Summary (CVE-2026-64443): Linux kernel staging: rtl8723bs vulnerable in the update_beacon_info() IE loop, where parsing of IEs could read beyond the received frame. The loop advances by (pIE->length + 2) but only guards on i length extending beyond len. The fix adds two guards at the top of th...

CVE-2026-64443 staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in updatebeaconinfo IE loop The IE parsing loop in updatebeaconinfo advances by pIE-length + 2 each iteration but only guards on i length from one byte past the allocated receive buffer...

CVE-2026-64443

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in updatebeaconinfo IE loop The IE parsing loop in updatebeaconinfo advances by pIE-length + 2 each iteration but only guards on i length from one byte past the allocated receive buffer...

CVE-2026-64429 gpio: eic-sprd: use raw_spinlock_t in the irq startup path

In the Linux kernel, the following vulnerability has been resolved: gpio: eic-sprd: use rawspinlockt in the irq startup path sprdeicirqunmask enables the GPIO IRQ and then updates controller state through sprdeicupdate, which takes sprdeic-lock with spinlockirqsave. The callback can be reached fr...

CVE-2026-64424

CVE-2026-64424 is a use-after-free in the Linux kernel's netpoll subsystem on the shutdown path. When __netpoll_cleanup() runs, it schedules an RCU callback that calls kfree(npinfo), but the TX worker (queue_process) is only cancelled via cancel_delayed_work(), which does not guarantee the worker...

CVE-2026-64424 netpoll: fix a use-after-free on shutdown path

In the Linux kernel, the following vulnerability has been resolved: netpoll: fix a use-after-free on shutdown path There is a use-after-free error on netpoll, which is clearly detected by KASAN. BUG: KASAN: slab-use-after-free in rawspinlockirqsave+0x3b/0x80 Read of size 1 at addr ... by task...