Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: tcp: tcpmakesynack can be called from process context. tcprtxsynack can now be called from process context, as explained in 0a375c822497 "tcp: tcprtxsynack can be called from process context". tcprtxsynack may call...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: UM: cpuinfo: Fixed a warning for CONFIGCPUMASKOFFSTACK When CONFIGCPUMASKOFFSTACK and CONFIGDEBUGPERCPUMAPS are selected, cpumaxbitswarn generates a runtime warning similar to the following, while we display /proc/cpuinfo. This...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Tracing: Fixed a race condition between CPU buffer writes and swapping operations. A warning occurred in rbendcommit at the following line of code: if RBWARNONcpubuffer, !localread&cpubuffer-committing WARNING: CPU: 0 PID: 139 at...

Astra Linux – Vulnerability in Linux 5.10

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

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: scsi: lpfc: Fixed the call trace observed during I/O with CMF enabled. The following issue was observed with CMF enabled: BUG: Using smpprocessorid in a preemptible context. Code: systemd-udevd/31711 Kernel: Caller is...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: BPF: Fixed a memory leak in the LRU and LRUPERCPU hash maps The LRU and LRUPERCPU maps allocate a new element during updates, before locking the target hash table bucket. Immediately afterwards, the maps attempt to lock the bucke...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: MIPS: cpuinfo: Fixed a warning for CONFIGCPUMASKOFFSTACK When CONFIGCPUMASKOFFSTACK and CONFIGDEBUGPERCPUMAPS are selected, cpumaxbitswarn generates a runtime warning similar to the following, while we display /proc/cpuinfo. This...

OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size

Summary The per-CPU message-buffer fallback path uses a 256-byte backup buffer but preserves the original payload size, which can be up to 8KB. If a CPU mismatch occurs, OBI can read beyond the fallback buffer and leak adjacent memory into telemetry. Details...

GHSA-R6C9-G6Q5-QRF9 OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size

Summary The per-CPU message-buffer fallback path uses a 256-byte backup buffer but preserves the original payload size, which can be up to 8KB. If a CPU mismatch occurs, OBI can read beyond the fallback buffer and leak adjacent memory into telemetry. Details...

PT-2026-41786

Name of the Vulnerable Software and Affected Versions OpenTelemetry eBPF Instrumentation versions prior to 0.9.0 Description The per-CPU message-buffer fallback path uses a 256-byte backup buffer but preserves the original payload size, which can reach up to 8KB. If a CPU mismatch occurs between...

CVE-2026-43374

A flaw was found in the Linux kernel's networking net: nexthop component. When a nexthop is removed from a group, the system prematurely frees per-CPU percpu statistics memory. This timing issue allows other parts of the kernel that are still referencing the old group to access and potentially...

CVE-2026-43288

A flaw was found in the Linux kernel's ext4 filesystem. A local user can trigger a system panic, leading to a Denial of Service DoS, by mounting a specially crafted ext4 filesystem with specific quota and project options. This occurs because a per-CPU counter is accessed before it is properly...

EUVD-2026-28558

In the Linux kernel, the following vulnerability has been resolved: ext4: move ext4percpuparaminit before ext4mbinit When running kvm-xfstests -c ext4/1k -C 1 generic/383 with the DOUBLECHECK macro defined, the following panic is triggered:...

UBUNTU-CVE-2026-43331

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: Disable KCOV instrumentation after loadsegments The loadsegments function changes segment registers, invalidating GS base which KCOV relies on for per-cpu data. When CONFIGKCOV is enabled, any subsequent instrumented C...

CVE-2026-43331

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: Disable KCOV instrumentation after loadsegments The loadsegments function changes segment registers, invalidating GS base which KCOV relies on for per-cpu data. When CONFIGKCOV is enabled, any subsequent instrumented C...

CVE-2026-43331 x86/kexec: Disable KCOV instrumentation after load_segments()

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: Disable KCOV instrumentation after loadsegments The loadsegments function changes segment registers, invalidating GS base which KCOV relies on for per-cpu data. When CONFIGKCOV is enabled, any subsequent instrumented C...

PT-2026-38982

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the x86 architecture, the load segments function modifies segment registers, which invalidates the GS base used by KCOV for per-cpu data. When CONFIG KCOV is enabled, any subsequent...

PT-2026-39079

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists during concurrent fork operations where a newly forked task is accounted as an MMCID user before it becomes visible in the process thread list and the global task...

CVE-2026-43274 mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq()

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-2026-43274 mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq()

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...