From 5dc4dfcee8aca6b3e1b0a314e53e8476aa499339 Mon Sep 17 00:00:00 2001 From: Gustavo Moreira Date: Fri, 17 Jan 2025 09:30:59 +1100 Subject: [PATCH] linux: bpf_prog extension object: improve pointers validation --- volatility3/framework/symbols/linux/extensions/__init__.py | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/volatility3/framework/symbols/linux/extensions/__init__.py b/volatility3/framework/symbols/linux/extensions/__init__.py index df1c00e3d..a3cd66238 100644 --- a/volatility3/framework/symbols/linux/extensions/__init__.py +++ b/volatility3/framework/symbols/linux/extensions/__init__.py @@ -2023,8 +2023,11 @@ class bpf_prog(objects.StructType): prog_tag_addr = self.tag.vol.offset prog_tag_size = self.tag.count - prog_tag_bytes = vmlinux_layer.read(prog_tag_addr, prog_tag_size) + if not vmlinux_layer.is_valid(prog_tag_addr, prog_tag_size): + vollog.debug("Unable to read bpf tag string from 0x%x", prog_tag_addr) + return None + prog_tag_bytes = vmlinux_layer.read(prog_tag_addr, prog_tag_size) prog_tag = binascii.hexlify(prog_tag_bytes).decode() return prog_tag