Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed a situation where a double free of the qgroup record occurred after attempting to add a delayed ref head failed. In the previous code, it was possible for a double kfree scenario to occur when calling...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Tracing: The WARNON message in tracingbuffersmmapclose has been fixed. When a process forks, the child process copies the parent’s virtual memory addresses, but the usermapped reference count is not incremented. As a result, when...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: tracing/eprobes: Ensure that event probes are consistent with kprobes and uprobes. Currently, if the symbol “@” is attempted to be used with an event probe eprobes, it will cause a NULL pointer dereference crash. Both kprobes...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: Tracing: Fixed a potential double-free issue in createvarref. In createvarref, initvarref is called to initialize the fields of the reffield variable. This variable is allocated in the previous function call, to createhistfield...

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

In the Linux kernel, the following vulnerabilities have been resolved: Tracing/histograms: Add histograms to histvars if they reference variables. Triggers may have referenced variables without having direct variable fields. This can occur if referenced variables are added for trigger actions. In...

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: Tracing: The memory leak in iter-temp occurred during the reading of tracepipe. kmemleak reports: Unreferenced object: 0xffff88814d14e200 size 256 Details: - Process: “cat”, PID: 336; Jiffies: 4294871818 age: 779.490 seconds - He...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: tracing/probes: The error check in parsebtffield has been fixed. btffindstructmember may return NULL or an error via the ERRPTR macro. However, its caller in parsebtffield only checks for the NULL condition. This issue is fixed b...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: tracing/dma: CapDMAmapsg tracepoint arrays to prevent buffer overflows. The dmamapsg tracepoint can cause a PERF buffer overflow when tracing large scatter-gather lists. When devices like virtio-gpu create large DRM buffers, the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: BPF: Fixed the re-attachment branch in bpftracingprogattach. The following scenario can cause a crash due to a missing attachbtf: 1 Load the rawtp program. 2 Load the fentry program with rawtp as targetfd. 3 Create a tracing...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Tracing: kprobe: Fixed a memory leak in testgenkprobe/kretprobecmd. testgenkprobecmd only frees the buffer in the “fail path”; therefore, the buffer may leak when there is no failure. Move the kfreebuf call from the “fail path...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Tracing: A memory leak was fixed in testgensynthcmd and testemptysynthevent. In testgensynthcmd, the buffer is freed only in the “fail” path. Therefore, the buffer may be leaked when there is no failure. Adding kfreebuf preven...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Tracing: Fixed wild-memory-access in registersynthevent. In registersynthevent, if setsyntheventprintfmt fails, then both traceremoveeventcall and unregisterTraceEvent will be called. This means that traceeventcall will call...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Tracing: A race condition has been fixed, where eprobes can be called before the event occurs. The flag that instructs the event to call its triggers after reading the event is set for eprobes after they are enabled. This leads t...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Tracing: kprobe: Fixed a potential null-ptr-dereference in tracearray in kprobeeventgentestexit When testgenkprobecmd fails after kprobeeventgencmdend, it will go to delete, which will call kprobeeventdelete and release the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: Tracing/histograms: Fixed the memory leak issue. This issue is resolved through commit 46bbe5c671e06f070428b9be142cc4ee5cedebac. As mentioned in commit 46bbe5c671e0 “Tracing: fixed double-free”, the “double-free” problem reported...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Tracing: The length check that causes memory corruption was corrected. We have experienced severe kernel crashes due to memory corruption in our production environment. For example: Call Trace: 1640542.554277 General protectio...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: riscv: trace: fix snapshot deadlock with sbi ecall If the functions in sbiecall.c are traceable, the command: echo "sbiecall:snapshot" /sys/kernel/tracing/setftracefilter can cause the kernel to enter a deadlock. Functions in...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: s390/idle: Marking archcpuidle as having no instructions The linux-next commit “cpuidle: tracing: Warning about !rcuiswatching” adds a new warning that affects the archcpuidle function on the s390 architecture. WARNING: “CPU: 2...

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 found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Tracing: Ensure that traceeventfile has a ref counter. The following actions can cause the kernel to crash: cd /sys/kernel/tracing echo 'p:sched schedule' kprobeevents exec 5events/kprobes/sched/enable kprobeevents exec 5&- Th...