In the Linux kernel, the following vulnerability has been resolved:
bpf: Guard against accessing NULL ptregs in bpfgettaskstack()
taskptregs() can return NULL on powerpc for kernel threads. This is then used in _bpfgetstack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of taskpt_regs() before trying to obtain the call chain.
{
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48770.json"
}