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: Limit access to parser-buffer when tracegetuser fails. When the length of the string written to setftracefilter exceeds FTRACEBUFFMAX, the following KASAN alarm will be triggered: BUG: KASAN: Slab-out-of-bounds in...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: Tracing: Free buffers when a used dynamic event is removed After 65536 dynamic events have been added and removed, the “type” field of the event uses the first available type number which is not currently used by other events. A...

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

In the Linux kernel, the following vulnerabilities have been resolved: Tracing: Fixed a null pointer dereference in the tracingerrlogopen function. This issue occurs when the function does not call seqopen if the file is opened only with write permissions. As a result, file-privatedata remains...

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: For CPU:...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: tracing: Restructure traceclockglobal to never block. It was reported that a fix to the ring buffer recursion detection would cause a hung machine during suspend/resume testing. The following backtrace was extracted from debuggin...

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

In the Linux kernel, the following vulnerabilities have been resolved: Tracing: Ensure visibility when inserting an element into tracingmap. Running the following two commands in parallel on a multi-processor AArch64 machine may occasionally generate an unexpected warning regarding duplicate...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tracing/eprobes: Do not allow eprobes to use $stack, or % for regs While working with event probes eprobes, I tried to see what would happen if I attempted to retrieve the instruction pointer %rip knowing that event probes do not...

Astra Linux – Vulnerability in Linux, Linux 5.10

It was discovered that there was a lack of CPU resources in the Linux kernel tracing module functionality in versions prior to 5.14-rc3. This issue occurred due to the way users utilize the trace ring buffer. Only privileged local users with the CAPSYSADMIN capability could exploit this flaw to...

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

In the Linux kernel, the following vulnerability has been resolved: Tracing: The warning in tracebufferedeventdisable has been fixed. The warning occurred in tracebufferedeventdisable at WARNONONCE!tracebufferedeventref. Call Trace: - warn+0xa5/0x1b0 - tracebufferedeventdisable+0x189/0x1b0 -...

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

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 in Linux 5.15

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 found in Linux 5.10, Linux 5.15

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 Firefox

It was possible to mutate a JavaScript object in such a way that the JIT compiler could crash while tracing it. This vulnerability affects Firefox versions less than 125...

Astra Linux – Vulnerability in Linux 5.15

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

In the Linux kernel, the following vulnerability has been resolved: tracing/trigger: Fixed to return an error if attempting to allocate a snapshot fails. registersnapshottrigger function was fixed to return an error code if it fails to allocate a snapshot, instead of returning 0 success. Otherwis...

Astra Linux – Vulnerability in Firefox and Thunderbird

Cross-Site Tracing occurs when a server echoes a request back using the Trace method, allowing an XSS attack to access authorization headers and cookies that are inaccessible to JavaScript such as cookies protected by HTTPOnly. To mitigate this attack, browsers imposed restrictions on fetch and...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

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...