1650 matches found
Astra Linux – Vulnerability in Linux 5.10
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, Linux 5.10
A race condition was identified in the Linux kernel’s perfeventopen function, which can be exploited by an unprivileged user to gain root privileges. This bug allows for the exploitation of several attack primitives, such as kernel address information leakage and arbitrary execution...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: Drivers: perf: Check the return value of findfirstbit We must check the return value of findfirstbit before using its value as an index array, as it may cause the array to overflow and lead to a panic: 107.318430 Kernel BUG 1...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerabilities have been resolved: perf/core: Fixed a reference count bug and a potential UAF in perfmmap. Syzkaller reported a refcountt issue where the increment of the reference count was set to 0; there was also a warning about a use-after-free when using...
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 Linux, Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: perf bpf: A memory leak was avoided in perfenvinsertbtf. The perfenvinsertbtf function does not insert a BTF entry if a duplicate ID is encountered, which can lead to a memory leak. The function should now return a success/error...
Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1
In the Linux kernel, the following vulnerability has been resolved: perf: RISC-V: Remove PERFHESSTOPPED flag checking in riscvpmustart Since commit 096b52fd2bb4 “perf: RISC-V: throttle perf events”, the perfsampleeventtook function was added to report time spent in overflow interrupts. If the...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerabilities have been resolved: perf: RISCV: Fix for panic occurring in the pmu overflow handler 1 idx of int is not desired when setting bits in unsigned long overflowctrs; use BIT instead. This panic occurs when running ‘perf record -e branches’ on sophgo...
Astra Linux – Vulnerability in Linux 5.10
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...
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 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 in Linux
In the Linux kernel, the following vulnerability has been resolved: perf/core: Fixed the unconditional use of the securitylockeddown function. Currently, the lockdown state is queried unconditionally, even though its result is only used if the PERFSAMPLEREGSINTR bit is set in attr.sampletype. Whi...
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 – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: drm/i915/perf: added a sentinel to xehpoabcounters. Arrays passed to reginrangetable should end with an empty record. The patch fixes a bug detected by KASAN with the following signature: BUG: KASAN: global-out-of-bounds in...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: powerpc/perf: The issue related to ref-counting on the PMU “vpapmu” has been fixed. Commit 176cda0619b6 “powerpc/perf: Add a perf interface to expose vpa counters” introduced “vpapmu” to expose the Book3s-HV nested APIv2. This...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: perf/core: The handling of buffer mapping fails correctly in perfmmap. After a buffer is successfully allocated or attached to an existing buffer, perfmmap attempts to map the buffer into the page table in read-only mode. If this...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: perf: Fixed the refcount warning when incrementing event-mmapcount. When calling refcountinc&event-mmapcount within perfmmaprb, the following warning is triggered: c refcountt: Addition on 0; use-after-free. WARNING:...
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; moreover, removeonexec allowed calling listdelevent...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: perf/core: Fixed an invalid wait context in ctxschedin Lockdep identified a bug in event scheduling when a pinned event failed, causing threads in the ring buffer to be awakened as follows. It seems that the wait-queue lock shoul...
Astra Linux – Vulnerabilities in Linux 5.10, 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...