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 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: i915/perf: Fixed NULL dereference bugs with drmdbg calls When the i915 perf interface is not available, dereferencing it will result in NULL references. Returning -ENOTSUPP is quite clear; a return value should be returned when t...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: “perf trace: Really free the evsel-priv area” In 3cb4d5e00e037c70 “perf trace: Free syscall tp fields in evsel-priv”, it only freed the area if strcmpevsel-tpformat-system, “syscalls” returned zero. However, the initialization of...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: perf: Improved missing SIGTRAP checks To detect missing SIGTRAP checks, we use a WARN in perfeventoverflow. This warning is triggered if pendingsigtrap was already set—meaning the process returns to user space without consuming...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: ARM: 9064/1: hwbreakpoint: Do not directly check the event’s overflowhandler hook The commit 1879445dfa7b “perf/core: Set event’s default ::overflowhandler” sets a default event-overflowhandler in perfeventalloc, and replaces the...

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

In the Linux kernel, the following vulnerability has been resolved: perf/core: Abrupt exit if the requested AUX area is out of bounds. When using perf-record with a large AUX area, for example 4GB, the following error occurs: bash perf record -C 0 -m ,4G -e armspe0// -- sleep 1 Failed to mmap wit...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Disabling preemption in bpfperfeventoutput The nesting protection in bpfperfeventoutput relies on disabled preemption, which is guaranteed for kprobes and tracepoints. However, bpfperfeventoutput can also be called from the...

Astra Linux – Vulnerability found in Linux 6.1, 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 Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: perf: Fix for perfpendingtask UaF According to syzbot, it is possible for perfpendingtask to continue running after the event has been freed. There are two related but distinct cases: - The taskwork was already queued before the...

Astra Linux – Vulnerability in Linux 5.15

A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to gain local privilege escalation. The perfgroupdetach function did not check the attachstate of the event’s siblings before calling addeventtogroups. However, removeonexec allowed calling listdelevent...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf,perf: Fixed an invalid progarray access in perfeventdetachbpfprog Syzbot reported a crash that occurs in the following tracing scenario: - Create a tracepoint with attr.inherit=1, attach it to the process, and set the BPF...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: perf: Fixed event leakage upon execution and file release The pending task work related to perf is never waited for when a matching event occurs. In the case of a child event released directly via freeevent, this can potential...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: powerpc/perf: Optimized the clearing of pending PMI entries, and removed the WARNON for the PMI check in powerpmudisable. The commit 2c9ac51b850d “powerpc/perf: Fix PMU callbacks to clear pending PMI before resetting an...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: perf/x86/lbr: Filtering vsyscall addresses We found that a panic can occur when a vsyscall is executed while LBR sampling is active. If the vsyscall is interrupted via NMI for perf sampling purposes, the following call sequence m...

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

A flaw was discovered in the Linux kernel. A memory use-after-free vulnerability was identified in the perf subsystem, allowing a local attacker with permission to monitor perf events, thereby corrupting memory and potentially escalating privileges. The most significant threat of this vulnerabili...

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: perf: armspe: Prevent overflow in PERFIDX2OFF By casting nrpages to unsigned long, an overflow can be avoided when handling large AUX buffer sizes = 2 GiB...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fixed a data race between perfeventsetoutput and perfmmapclose. Yang Jihing reported a race between perfeventsetoutput and perfmmapclose: CPU1 CPU2 perfmmapclosee2 if atomicdecandtest&e2-rb-mmapcount // 1 - 0 detachres...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: perf/arm-cmn: Rejects unsupported hardware configurations. So far, we have been fairly lenient in accepting both unknown CMN models at least with a warning, as well as unknown revisions of those models that we do know about...

SUSE CVE-2026-74637

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix group leader use-after-free after sibling detach perfgroupdetach handles leader and sibling detach differently. When the group leader is detached, all siblings are promoted to singleton events and their groupleader...