Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: coresight: trbe: remove the cpuhp instance node before removing the cpuhp state The functions cpuhpstateaddinstance and cpuhpstateremoveinstance should be used in pairs. Otherwise, a warning will be issued during the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: udmabuf: Set the DMA mask for the udmabuf device v2 If the DMA mask is not set explicitly, the following warning occurs when the userspace attempts to access the dma-buf via the CPU, as reported by syzbot: WARNING: CPU: 1 PID: 35...

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...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: RCU: Fixed the lockdep warning in thiscpuread in rcuforcequiescentstate. Running rcutorture with a non-zero fqsduration module parameter in a kernel built with CONFIGPREEMPTION=y results in the following error: BUG: Using...

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

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: Networks: Do not pass flowid to setrpscpu. The responsible commit made the assumption that the RPS table for each receive queue would have the same size, and that it would not change. When computing flowid in setrpscpu, do not...

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

A flaw in memory leak prevention in the Linux kernel’s cpuentryarea mechanism for mapping X86 CPU data to memory was discovered. This flaw allows a local user to guess the locations of exception stacks or other important data. By exploiting this flaw, a local user can gain access to certain...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Ring Buffer: Check for NULL cpubuffer in ringbufferwakewaiters On some machines, the number of listed CPUs may be larger than the actual CPUs that exist. The tracing subsystem allocates a per-CPU directory with access to the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: um: initcputasks earlier. This issue is currently addressed in umlfinishsetup. However, for example, when KCOV is enabled, this can still cause crashes, as some initialization code may call functions like memparse, which have...

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...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: cgroup, freezer: Hold cpuhotpluglock before freezermutex. syzbot reports a circular locking dependency between cpuhotpluglock and freezermutex. To address this issue, commit f5d39b020809 “freezer,sched: Rewrite core freezer...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: bpf, cpumap: Handle skb as well when cleaning up ptrring. The following warning was reported when running xdpredirectcpu with both skbmode and stressmode enabled: ------------ Cut here ------------ Incorrect XDP memory type...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Drivers: perf: Do not broadcast to other CPUs when starting a counter This command: $ perf record -e cycles:k -e instructions:k -c 10000 -m 64M dd if=/dev/zero of=/dev/null count=1000 produces this kernel warning: 444.364395...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: cpufreq: amd-pstate: fixed the global sysfs attribute type. In commit 3666062b87ec “cpufreq: amd-pstate: move to use busgetdevroot”, the “amdpstate” attributes were moved from a dedicated kobject to the root kobject. While the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bounds: Use the correct number of bits for CONFIGNRCPUS that is a power of two. The bitsper function rounds up to the next power of two when a power of two is passed as an argument. This can cause crashes on some machines and...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Clean up CPU timers before freeing them during exec. The commit 55e8c8eb2c7b “posix-cpu-timers: Store a reference to a pid instead of a task” changed the behavior so that tasks are looked up by PID when deleting...

Astra Linux – Vulnerability in Xen

Potential speculative code storage bypasses exist in all supported CPU products. Combined with software vulnerabilities related to speculative execution of overwritten instructions, this could lead to incorrect speculation and potentially cause data leakage...

Astra Linux – Vulnerability in Jetty9

In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0alpha0 to 10.0.1, and 11.0.0alpha0 to 11.0.1, CPU usage can reach 100% when receiving a large invalid TLS frame...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix data race in CPU latency PM QoS request handling The cpulatencyqosadd/remove/updaterequest interfaces lack internal synchronization by design, requiring the caller to ensure thread safety. The current...