CVE-2023-53742 kcsan: Avoid READ_ONCE() in read_instrumented_memory()

In the Linux kernel, the following vulnerability has been resolved: kcsan: Avoid READONCE in readinstrumentedmemory Haibo Li reported: | Unable to handle kernel paging request at virtual address | ffffff802a0d8d7171 | Mem abort info:o: | ESR = 0x9600002121 | EC = 0x25: DABT current EL, IL = 32...

CVE-2023-53742

The CVE-2023-53742 entry concerns the Linux kernel vulnerability in kcsan: avoiding READ_ONCE() in read_instrumented_memory(). The root cause is that on certain arm64 configurations, READ_ONCE() can be promoted to an atomic acquire that cannot handle unaligned addresses, leading to a crash (Oops)...