CVE-2026-43378

CVE-2026-43378 affects the Linux kernel SMB server (smb2_open). A use-after-free arises because the opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is dereferenced after rcu_read_unlock(), creating a use-after-free window. Multiple sources (SUSE, Red Hat, Debian OSV, Ubuntu, Debian t...

CVE-2026-43376

CVE-2026-43376 affects ksmbd in the Linux kernel. The vulnerability arises from freeing oplock_info with kfree() while it can still be accessed under RCU read-side critical sections (e.g., opinfo_get), allowing a use-after-free. The fixes across connected reports switch to deferred freeing via ca...

CVE-2026-43374 net: nexthop: fix percpu use-after-free in remove_nh_grp_entry

In the Linux kernel, the following vulnerability has been resolved: net: nexthop: fix percpu use-after-free in removenhgrpentry When removing a nexthop from a group, removenhgrpentry publishes the new group via rcuassignpointer then immediately frees the removed entry's percpu stats with...

CVE-2026-43358

In the Linux kernel, the following vulnerability has been resolved: btrfs: add missing RCU unlock in error path in tryreleasesubpageextentbuffer Call rcureadlock before exiting the loop in tryreleasesubpageextentbuffer because there is a rcureadunlock call past the loop. This has been detected by...

CVE-2026-43358

CVE-2026-43358 affects the Linux kernel's btrfs filesystem. The vulnerability is a missing RCU unlock in the error path of try_release_subpage_extent_buffer(), where rcu_read_lock() should be held before exiting the loop because an rcu_read_unlock() occurs past the loop. The issue was identified ...

CVE-2026-43358 btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()

In the Linux kernel, the following vulnerability has been resolved: btrfs: add missing RCU unlock in error path in tryreleasesubpageextentbuffer Call rcureadlock before exiting the loop in tryreleasesubpageextentbuffer because there is a rcureadunlock call past the loop. This has been detected by...

UBUNTU-CVE-2026-43292

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: prevent RCU stalls in kasanreleasevmallocnode When CONFIGPAGEOWNER is enabled, freeing KASAN shadow pages during vmalloc cleanup triggers expensive stack unwinding that acquires RCU read locks. Processing a large...

CVE-2026-43292

The CVE-2026-43292 issue affects the Linux kernel mm/vmalloc path when CONFIG_PAGE_OWNER is enabled. During vmalloc cleanup, freeing KASAN shadow pages can trigger stack unwinding under an RCU read lock, and processing a large purge_list (kasan_release_vmalloc_node) may cause long RCU stalls (10+...

CVE-2026-43292 mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: prevent RCU stalls in kasanreleasevmallocnode When CONFIGPAGEOWNER is enabled, freeing KASAN shadow pages during vmalloc cleanup triggers expensive stack unwinding that acquires RCU read locks. Processing a large...

PT-2026-39019

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A missing RCU Read-Copy-Update unlock in the error path of the try release subpage extent buffer function within the btrfs module can occur. This happens because a rcu read unlock call...

PT-2026-39037

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the ksmbd module. The system frees the oplock info structure immediately using kfree, while it is still being accessed under RCU Read-Copy-Update read-si...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the pointer opinfo obtained through rcudereference in smb2open being rereferenced after rcureadunlock,...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the absence of an RCU unlocking mechanism in the wrong path. This could lead to improper release ...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the threaded busypoll mechanism, causing rcu tasks to become stalled and potentially leading to system...

SUSE CVE-2026-43016

In the Linux kernel, the following vulnerability has been resolved: bpf: sockmap: Fix use-after-free of sk-sksocket in skpsockverdictdataready. syzbot reported use-after-free of AFUNIX socket's sk-sksocket in skpsockverdictdataready. 0 In unixstreamsendmsg, the peer socket's -skdataready is calle...

SUSE CVE-2026-43074

In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, epfree in eventpoll.c will kfree the epi-ep eventpoll struct while it still being used by another concurrent thread. Defer the kfree to an RCU...

SUSE CVE-2026-43091

In the Linux kernel, the following vulnerability has been resolved: xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their...

CVE-2026-43214

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM for x86 architectures. When reading Page Directory Pointer Table Registers PDPTRs in the getsregs2 function, the system fails to use proper Sleepable Read-Copy Update SRCU protection. This oversight can lead to incorrect memo...

EUVD-2026-27774

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Add SRCU protection for reading PDPTRs in getsregs2 Add SRCU read-side protection when reading PDPTR registers in getsregs2. Reading PDPTRs may trigger access to guest memory: kvmpdptrread - svmcachereg - loadpdptrs -...

EUVD-2026-27592

In the Linux kernel, the following vulnerability has been resolved: xfrm: Wait for RCU readers during policy netns exit xfrmpolicyfini frees the policybydst hash tables after flushing the policy work items and deleting all policies, but it does not wait for concurrent RCU readers to leave their...