From: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn> mainline inclusion from mainline-v7.2-rc2 commit 72a85e9464a5332fb2cd7efd26d9295275ceda2d category: bugfix bugzilla: https://atomgit.com/openeuler/kernel/issues/9793 CVE: CVE-2026-72402 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- print_bpf_insn() masks ldimm64 immediates for pointer-bearing pseudo sources when pointer leaks are not allowed, but the mask only covers BPF_PSEUDO_MAP_FD and BPF_PSEUDO_MAP_VALUE. BPF_PSEUDO_MAP_IDX, BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID can also be resolved to kernel pointer values before the verifier log prints the instruction. Include them in the existing pointer classification so the log prints 0x0 instead of the rewritten address. Fixes: 4976b718c355 ("bpf: Introduce pseudo_btf_id") Fixes: 387544bfa291 ("bpf: Introduce fd_idx") Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn> Link: https://lore.kernel.org/r/20260623-f01-13-pseudo-btf-id-cap-bpf-v2-1-a190ebb... Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Pu Lehui <pulehui@huawei.com> --- kernel/bpf/disasm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/disasm.c b/kernel/bpf/disasm.c index 49940c26a227..cc3c9792c4a6 100644 --- a/kernel/bpf/disasm.c +++ b/kernel/bpf/disasm.c @@ -287,7 +287,10 @@ void print_bpf_insn(const struct bpf_insn_cbs *cbs, */ u64 imm = ((u64)(insn + 1)->imm << 32) | (u32)insn->imm; bool is_ptr = insn->src_reg == BPF_PSEUDO_MAP_FD || - insn->src_reg == BPF_PSEUDO_MAP_VALUE; + insn->src_reg == BPF_PSEUDO_MAP_VALUE || + insn->src_reg == BPF_PSEUDO_MAP_IDX || + insn->src_reg == BPF_PSEUDO_MAP_IDX_VALUE || + insn->src_reg == BPF_PSEUDO_BTF_ID; char tmp[64]; if (is_ptr && !allow_ptr_leaks) -- 2.34.1