CVE-2026-63799 sched/mmcid: Fix OOB clear_bit when CID is MM_CID_UNSET in fixup path

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...

netfilter: x_tables: avoid leaking percpu counter pointers

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Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: alpha: Fixed corruption in user-space during memory compaction. Alpha systems may experience sporadic crashes in user-space and heap corruption when memory compaction is enabled. Symptoms include SIGSEGV signals, failures by t...

SUSE CVE-2026-45884

In the Linux kernel, the following vulnerability has been resolved: apparmor: avoid per-cpu hold underflow in aagetbuffer When aagetbuffer pulls from the per-cpu list it unconditionally decrements cache-hold. If hold reaches 0 while count is still non-zero, the unsigned decrement wraps to UINTMAX...

CVE-2026-43331

A flaw was found in the Linux kernel. When Kernel Coverage KCOV instrumentation is enabled, a local user performing a kexec operation can trigger an invalid state within the x86/kexec component. This invalid state, related to the GS base that KCOV relies on for per-CPU data, causes the kernel to...

SUSE CVE-2026-43274

In the Linux kernel, the following vulnerability has been resolved: mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchpipcgetclusteraggrirq The clustercfg array is dynamically allocated to hold per-CPU configuration structures, with its size based on the number of online CPUs. Previously, thi...

CVE-2026-23342 bpf: Fix race in cpumap on PREEMPT_RT

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix race in cpumap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes bqenqueue and cpumapflush run atomically...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-005735)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005735 advisory. In the Linux kernel, the following vulnerability has been resolved: tracing: Fix race issue between cpu buffer write and swap Warning happened in rbendcommit at cod...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005480)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005480 advisory. In the Linux kernel, the following vulnerability has been resolved: tick/broadcast: Move per CPU pointer access into the atomic section The recent fix for making the...

UBUNTU-CVE-2026-23225

In the Linux kernel, the following vulnerability has been resolved: sched/mmcid: Don't assume CID is CPU owned on mode switch Shinichiro reported a KASAN UAF, which is actually an out of bounds access in the MMCID management code. CPU0 CPU1 T1 runs in userspace T0: forkT4 - Switch to per CPU CID...

CVE-2026-23025

In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: prevent pcp corruption with SMP=n The kernel test robot has reported: BUG: spinlock trylock failure on UP on CPU0, kcompactd0/28 lock: 0xffff888807e35ef0, .magic: dead4ead, .owner: kcompactd0/28, .ownercpu: 0 CPU: 0...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992894)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992894 advisory. In the Linux kernel, the following vulnerability has been resolved: hrtimers: Handle CPU state correctly on hotplug Consider a scenario where a CPU transitions from...

kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy

In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfsmdtdestroy In allocinode, inodeinitalways could return -ENOMEM if securityinodealloc fails, which causes inode-iprivate uninitialized. Then nilfsismetadatafileinode returns true and nilfsfreeinode...

CVE-2025-68262

The provided sources describe a Linux kernel vulnerability: a double-free in the crypto/zstd per-CPU streams when multiple tfms are freed, caused by freeing zstd_streams in zstd_exit() on every tfm destruction. The recommended fix is to change lifecycle management so the streams are freed only on...

CVE-2025-68262 crypto: zstd - fix double-free in per-CPU stream cleanup

In the Linux kernel, the following vulnerability has been resolved: crypto: zstd - fix double-free in per-CPU stream cleanup The crypto/zstd module has a double-free bug that occurs when multiple tfms are allocated and freed. The issue happens because zstdstreams per-CPU contexts are freed in...

kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy

In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfsmdtdestroy In allocinode, inodeinitalways could return -ENOMEM if securityinodealloc fails, which causes inode-iprivate uninitialized. Then nilfsismetadatafileinode returns true and nilfsfreeinode...

Linux Distros Unpatched Vulnerability : CVE-2024-44968

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: tick/broadcast: Move per CPU pointer access into the atomic section The recent fix for makin...

kernel: uprobe: avoid out-of-bounds memory access of fetching args

An out-of-bounds overflow vulnerability was found in the Linux kernel. When Uprobe needs to fetch args into a per-CPU buffer and then copy to a ring buffer, sometimes user-space strings and arrays can be very large, but the size of the per-CPU buffer is only page size and checking is not performe...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from tcpmakesynack not disabling preemption when accessing per-CPU variables in the process context...

kernel: mm: vmalloc: check if a hash-index is in cpu_possible_mask

A vulnerability was found in the Linux kernel that involves improper handling of per-CPU data in systems where cpupossiblemask has gaps between CPUs. This can lead to an index which accesses non-existent or unset CPU areas and potentially causes kernel crashes...