UBUNTU-CVE-2023-52839

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 gives rise to this kernel warning: 444.364395...

UBUNTU-CVE-2023-52797

In the Linux kernel, the following vulnerability has been resolved: drivers: perf: Check findfirstbit return value We must check the return value of findfirstbit before using the return value as an index array since it happens to overflow the array and then panic: 107.318430 Kernel BUG 1 107.3194...

CVE-2023-52839

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 gives rise to this kernel warning: 444.364395...

CVE-2023-52835

In the Linux kernel, the following vulnerability has been resolved: perf/core: Bail out early if the request AUX area is out of bound When perf-record with a large AUX area, e.g 4GB, it fails with: perf record -C 0 -m ,4G -e armspe0// -- sleep 1 failed to mmap with 12 Cannot allocate memory and i...

CVE-2023-52788

In the Linux kernel, the following vulnerability has been resolved: i915/perf: Fix NULL deref bugs with drmdbg calls When i915 perf interface is not available dereferencing it will lead to NULL dereferences. As returning -ENOTSUPP is pretty clear return when perf interface is not available...

CVE-2023-52859

In the Linux kernel, the following vulnerability has been resolved: perf: hisi: Fix use-after-free when register pmu fails When we fail to register the uncore pmu, the pmu context may not been allocated. The error handing will call cpuhpstateremoveinstance to call uncore pmu offline callback, whi...

CVE-2023-52860

CVE-2023-52860 relates to the Linux kernel; the root issue occurs in the perf driver when tearing down a hisi_hns3 PMU, where CPU hotplug callbacks could run after the PMU is unregistered, leading to a NULL pointer dereference. The fix uses cpuhp_state_remove_instance_nocalls() instead of cpuhp_s...

CVE-2023-52859 perf: hisi: Fix use-after-free when register pmu fails

In the Linux kernel, the following vulnerability has been resolved: perf: hisi: Fix use-after-free when register pmu fails When we fail to register the uncore pmu, the pmu context may not been allocated. The error handing will call cpuhpstateremoveinstance to call uncore pmu offline callback, whi...

CVE-2023-52859 perf: hisi: Fix use-after-free when register pmu fails

In the Linux kernel, the following vulnerability has been resolved: perf: hisi: Fix use-after-free when register pmu fails When we fail to register the uncore pmu, the pmu context may not been allocated. The error handing will call cpuhpstateremoveinstance to call uncore pmu offline callback, whi...

CVE-2023-52859

CVE-2023-52859 affects the Linux kernel perf: hisi uncore PMU registration. A use-after-free can occur when the PMU register path fails and the uncore PMU offline callback is invoked, potentially migrating the PMU context. The fix replaces cpuhp_state_remove_instance() with cpuhp_state_remove_ins...

CVE-2023-52839 drivers: perf: Do not broadcast to other cpus when starting a counter

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 gives rise to this kernel warning: 444.364395...

CVE-2023-52839

CVE-2023-52839 describes a Linux kernel vulnerability in perf where broadcasting to other CPUs when starting a counter was removed as part of a fix (commit 3fec323339a4). Root cause: unnecessary broadcast in perf code could lead to a warning and potential instability; fix eliminates the broadcast...

CVE-2023-52839 drivers: perf: Do not broadcast to other cpus when starting a counter

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 gives rise to this kernel warning: 444.364395...

CVE-2023-52839 drivers: perf: Do not broadcast to other cpus when starting a counter

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 gives rise to this kernel warning: 444.364395...

CVE-2023-52839

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 gives rise to this kernel warning: 444.364395...

CVE-2023-52835 perf/core: Bail out early if the request AUX area is out of bound

In the Linux kernel, the following vulnerability has been resolved: perf/core: Bail out early if the request AUX area is out of bound When perf-record with a large AUX area, e.g 4GB, it fails with: perf record -C 0 -m ,4G -e armspe0// -- sleep 1 failed to mmap with 12 Cannot allocate memory and i...

CVE-2023-52835 perf/core: Bail out early if the request AUX area is out of bound

In the Linux kernel, the following vulnerability has been resolved: perf/core: Bail out early if the request AUX area is out of bound When perf-record with a large AUX area, e.g 4GB, it fails with: perf record -C 0 -m ,4G -e armspe0// -- sleep 1 failed to mmap with 12 Cannot allocate memory and i...

CVE-2023-52835

CVE-2023-52835 affects the Linux kernel perf subsystem. The root issue is that a large AUX area (e.g., 4 GB) can cause rb_alloc_aux and related allocations to hit bounds and mmap failure, triggering a WARN and an ENOMEM during perf-record. The fix is to bail out early if the requested AUX area is...

CVE-2023-52835 perf/core: Bail out early if the request AUX area is out of bound

In the Linux kernel, the following vulnerability has been resolved: perf/core: Bail out early if the request AUX area is out of bound When perf-record with a large AUX area, e.g 4GB, it fails with: perf record -C 0 -m ,4G -e armspe0// -- sleep 1 failed to mmap with 12 Cannot allocate memory and i...

CVE-2023-52835

In the Linux kernel, the following vulnerability has been resolved: perf/core: Bail out early if the request AUX area is out of bound When perf-record with a large AUX area, e.g 4GB, it fails with: perf record -C 0 -m ,4G -e armspe0// -- sleep 1 failed to mmap with 12 Cannot allocate memory and i...