发布于3月6日3月6日 Members SUSE: CVE-2022-48713: SUSE Linux Security Advisory Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/20/2024 Created 08/16/2024 Added 08/09/2024 Modified 08/09/2024 Description In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/pt: Fix crash with stop filters in single-range mode Add a check for !buf->single before calling pt_buffer_region_size in a place where a missing check can cause a kernel crash. Fixes a bug introduced by commit 670638477aed ("perf/x86/intel/pt: Opportunistically use single range output mode"), which added a support for PT single-range output mode. Since that commit if a PT stop filter range is hit while tracing, the kernel will crash because of a null pointer dereference in pt_handle_status due to calling pt_buffer_region_size without a ToPA configured. The commit which introduced single-range mode guarded almost all uses of the ToPA buffer variables with checks of the buf->single variable, but missed the case where tracing was stopped by the PT hardware, which happens when execution hits a configured stop filter. Tested that hitting a stop filter while PT recording successfully records a trace with this patch but crashes without this patch. Solution(s) suse-upgrade-cluster-md-kmp-azure suse-upgrade-cluster-md-kmp-rt suse-upgrade-dlm-kmp-azure suse-upgrade-dlm-kmp-rt suse-upgrade-gfs2-kmp-azure suse-upgrade-gfs2-kmp-rt suse-upgrade-kernel-azure suse-upgrade-kernel-azure-devel suse-upgrade-kernel-azure-extra suse-upgrade-kernel-azure-livepatch-devel suse-upgrade-kernel-azure-optional suse-upgrade-kernel-azure-vdso suse-upgrade-kernel-devel-azure suse-upgrade-kernel-devel-rt suse-upgrade-kernel-rt suse-upgrade-kernel-rt-devel suse-upgrade-kernel-rt-extra suse-upgrade-kernel-rt-livepatch suse-upgrade-kernel-rt-livepatch-devel suse-upgrade-kernel-rt-optional suse-upgrade-kernel-rt-vdso suse-upgrade-kernel-rt_debug suse-upgrade-kernel-rt_debug-devel suse-upgrade-kernel-rt_debug-livepatch-devel suse-upgrade-kernel-rt_debug-vdso suse-upgrade-kernel-source-azure suse-upgrade-kernel-source-rt suse-upgrade-kernel-syms-azure suse-upgrade-kernel-syms-rt suse-upgrade-kselftests-kmp-azure suse-upgrade-kselftests-kmp-rt suse-upgrade-ocfs2-kmp-azure suse-upgrade-ocfs2-kmp-rt suse-upgrade-reiserfs-kmp-azure suse-upgrade-reiserfs-kmp-rt References https://attackerkb.com/topics/cve-2022-48713 CVE - 2022-48713
