CVE-2023-52621

In the Linux kernel, the following vulnerability has been resolved: bpf: Check rcureadlocktraceheld before calling bpf map helpers These three bpfmaplookup,update,deleteelem helpers are also available for sleepable bpf program, so add the corresponding lock assertion for sleepable bpf program,...

kernel: srcu: Delegate work to the boot cpu if using SRCU_SIZE_SMALL

A synchronization flaw was found in the Linux kernel Sleepable Read-Copy-Update SRCU implementation. The subsystem assumed that central processing unit CPU 0 was always online. On systems where CPU 0 is offline, such as crash-kernel configurations using a different boot CPU, SRCU work could be...