UBUNTU-CVE-2023-52860

In the Linux kernel, the following vulnerability has been resolved: drivers/perf: hisi: use cpuhpstateremoveinstancenocalls for hisihns3pmu uninit process When tearing down a 'hisihns3' PMU, we mistakenly run the CPU hotplug callbacks after the device has been unregistered, leading to fireworks...

CVE-2023-52831

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON when rebuilding the...

UBUNTU-CVE-2023-52831

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON when rebuilding the...

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-2023-52860 drivers/perf: hisi: use cpuhp_state_remove_instance_nocalls() for hisi_hns3_pmu uninit process

In the Linux kernel, the following vulnerability has been resolved: drivers/perf: hisi: use cpuhpstateremoveinstancenocalls for hisihns3pmu uninit process When tearing down a 'hisihns3' PMU, we mistakenly run the CPU hotplug callbacks after the device has been unregistered, leading to fireworks...

CVE-2023-52842

CVE-2023-52842 affects the Linux kernel virtio_vsock path. The issue arises from uninitialized buf_alloc and fwd_cnt fields in struct virtio_vsock_hdr when a new skb is allocated in virtio_transport_init_hdr(), leading to a KMSAN-uninitialized-value report. The connected Astra/SUSE advisories con...

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-2023-52831 cpu/hotplug: Don't offline the last non-isolated CPU

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON when rebuilding the...

CVE-2023-52831

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON when rebuilding the...

CVE-2023-52831

CVE-2023-52831 (Linux kernel) : The issue resides in cpu/hotplug logic when CPUs are isolated with isolcpus=. Offline-ing the last non-isolated (housekeeping) CPU can cause a WARN_ON in build_sched_domains and a subsequent panic due to an empty CPU mask in partition_sched_domains_locked(), leadin...

CVE-2023-52831 cpu/hotplug: Don't offline the last non-isolated CPU

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON when rebuilding the...

CVE-2023-52831 cpu/hotplug: Don't offline the last non-isolated CPU

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON when rebuilding the...

CVE-2023-52817 drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix a null pointer access when the smcrreg pointer is NULL In certain types of chips, such as VEGA20, reading the amdgpuregssmc file could result in an abnormal null pointer access when the smcrreg pointer is NULL...

CVE-2023-52796 ipvlan: add ipvlan_route_v6_outbound() helper

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...

CVE-2023-52796 ipvlan: add ipvlan_route_v6_outbound() helper

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...

CVE-2023-52796

In the Linux kernel, the following vulnerability has been resolved: ipvlan: add ipvlanroutev6outbound helper Inspired by syzbot reports using a stack of multiple ipvlan devices. Reduce stack size needed in ipvlanprocessv6outbound by moving the flowi6 struct used for the route lookup in an non...

CVE-2023-52791

CVE-2023-52791 affects the Linux kernel i2c core: Run atomic i2c xfer when !preemptible to ensure atomicity during restart sequences, preventing voluntary context switches within RCU read-side critical sections. The fix, tied to preemption handling (switching to !preemptible()), aligns with pre-v...

CVE-2023-52791

In the Linux kernel, the following vulnerability has been resolved: i2c: core: Run atomic i2c xfer when !preemptible Since bae1d3a05a8b, i2c transfers are non-atomic if preemption is disabled. However, non-atomic i2c transfers require preemption e.g. in waitforcompletion while waiting for the DMA...

CVE-2023-52778

CVE-2023-52778 affects the Linux kernel’s MPTCP implementation. The root cause is a commit that allowed TCP sockets and MPTCP subflows to build egress packets larger than 64K, exceeding the DSS data size and causing misrepresentation on the wire and stream corruption. The issue manifests as large...