CVE-2023-53326

In the Linux kernel, the following vulnerability has been resolved: powerpc: Don't try to copy PPR for task with NULL ptregs powerpc sets up PFKTHREAD and PFIOWORKER with a NULL ptregs, which from my arguably very short checking is not commonly done for other archs. This is fine, except when...

CVE-2023-53326 powerpc: Don't try to copy PPR for task with NULL pt_regs

In the Linux kernel, the following vulnerability has been resolved: powerpc: Don't try to copy PPR for task with NULL ptregs powerpc sets up PFKTHREAD and PFIOWORKER with a NULL ptregs, which from my arguably very short checking is not commonly done for other archs. This is fine, except when...

CVE-2023-53326

CVE-2023-53326 affects the PowerPC Linux kernel. It stems from PF_KTHREAD/PF_IO_WORKER tasks with a NULL pt_regs, causing a NULL pointer dereference during core dump (kernel crash). The fix adds pt_regs validity checks in ppc_get/ppr_set and returns -EINVAL if pt_regs are not set. Remediation is ...