Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: SEV: Rejects attempts to synchronize VMSA of a vCPU that has already been launched/encrypted. Synchronize the vCPU state with its associated VMSA if the vCPU has already been launched, i.e., if the VMSA has already been...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix for a race condition in devmap on PREEMPTRT On PREEMPTRT kernels, the per-CPU xdpdevbulkqueue bq can be accessed concurrently by multiple preemptible tasks on the same CPU. The original code assumes that bqenqueue and...

Astra Linux – Vulnerabilities in Linux, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: Firmware: armsdei: Fixed a bug where sleep operations occurred from an invalid context. Running a preempt-rt v6.2-rc3-rt1 based kernel on an Ampere Altra Triggers: - Bug: Sleeping function called from an invalid context at...

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 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: srcu: Delegating tasks to the booting CPU when using SRCUSIZESMALL. The commit 994f706872e6 “srcu: Making the Tree SRCU capable of operating without the snpnode array” assumes that CPU 0 is always online. However, there are...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum: Protect the driver from buggy firmware When processing port up/down events generated by the device’s firmware, the driver attempts to protect itself from events reported for non-existent local ports. However, it...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: cpu: Re-enable CPU mitigations by default for !X86 architectures. Rename the configuration for x86 to CPUMITIGATIONS, define it in the generic code, and apply it to all architectures except x86. A recent commit that turned...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: perf/x86/amd/uncore: Fixed a memory leak related to the events array. When a CPU comes online, the per-CPU NB and LLC uncore contexts are freed, but the events array within the context structure is not freed. This causes a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: drivers/perf: hisi: Use cpuhpstateremoveinstancenocalls instead of cpuhpstateremoveinstance so that the notifications do not execute after the PMU device has been unregistered. When tearing down a ‘hisihns3’ PMU, we mistakenly ra...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: ACPI: Processor – Updated the check for the cpuidle driver in acpiprocessorstart. Commit 7a8c994cbb2d “ACPI: Processor: Idle: Optimize ACPI idle driver registration” moved the ACPI idle driver registration to...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: workqueue: The issue related to selecting the wakecpu in kickpool has been fixed. With cpupossiblemask=0-63 and cpuonlinemask=0-7, the following kernel error was observed: smp: Bringing up secondary CPUs… smp: Brought up 1 node, ...

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

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fixed an oops during rmmod on single-CPU platforms. During the removal of the idxd driver, a registered offline callback was invoked as part of the cleanup process. However, on systems with only one CPU online, n...

Astra Linux – Vulnerability in libxstream-java

XStream is a simple library for serializing objects to XML and back again. In affected versions, this vulnerability may allow a remote attacker to allocate 100% of the CPU resources on the target system, depending on the type of CPU or through parallel execution of such a payload. This results in...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Fixed an issue where the non-existent percpu rtpcp variable was accessed in rcutasksneedgpcb. For kernels built with CONFIGFORCENRCPUS=y, nrcpuids is defined as NRCPUS instead of the number of possible CPUs. This can...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fixed a system hang caused by CPU-clock usage. CPU-clock usage by the async-profiler tool can trigger a system hang. This issue was fixed in the commit made by Octavia Togami: 18dbcbfabfff “perf: Fixed the POLLHUP...

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

In the Linux kernel, the following vulnerability has been resolved: net/sched: fqpie: avoid stalls in fqpietimer When setting a high number of flows limit being 65536, fqpietimer is currently using too much time as syzbot reported. Add logic to yield the cpu every 2048 flows less than 150 usec on...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: perf: Fixed list corruption in perfcgroupswitch. There is list corruption in cgrpcpuctxlist. This occurs at the following path: perfcgroupswitch: listforeachentrycgrpcpuctxlist cpuctxschedin ctxschedin ctxpinnedschedin...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Do not offline the last non-isolated CPU. If a system has isolated CPUs using the “isolcpus=” command-line parameter, attempting to offline the last housekeeping CPU will result in a WARNON message when rebuilding th...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: rcutorture: Fixed the issue where ksoftirqd’s timing and iteration were increased. The RCU priority boosting can fail in two situations: 1 If nrcpus maxcpus, meaning that the total number of CPUs is greater than the number of...