CVE-2021-28971

The CVE-2021-28971 vulnerability affects the Linux kernel: specifically, intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c can mishandle PEBS status on Haswell-era CPUs, potentially causing a system crash when userspace tools (e.g., perf-fuzzer) access performance events. The issue exists in...

CVE-2021-28964

CVE-2021-28964: A race condition in get_old_root() in fs/btrfs/ctree.c of the Linux kernel up to 5.11.8 can allow a local attacker to cause a denial of service by cloning an extent buffer without proper locking. Connected documents confirm the Btrfs race condition and DoS impact but do not provid...

CVE-2021-28952

CVE-2021-28952 concerns a buffer overflow in the Linux kernel’s sound/soc/qcom/sdm845.c soundwire driver when an unexpected port ID is encountered. Affected: Linux kernel 5.11.8 and earlier (through 5.11.x); root cause: buffer overflow in the driver. Impact described in sources as potentially ena...

CVE-2021-28951

CVE-2021-28951 is a Linux kernel flaw affecting fs/io_uring.c up to 5.11.8 that can cause a denial of service (deadlock) when exit waits for a SQPOLL thread while the thread awaits a start signal. The issue is documented in multiple advisories (e.g., ALAS2KERNEL entries for Kernel-5.10/5.15 and r...