Christophe Leroy c5beb0415a bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro() ...

BugLink: https://bugs.launchpad.net/bugs/2076435

[ Upstream commit e60adf513275c3a38e5cb67f7fd12387e43a3ff5 ]

set_memory_rox() can fail, leaving memory unprotected.

Check return and bail out when bpf_jit_binary_lock_ro() returns
an error.

Link: https://github.com/KSPP/linux/issues/7
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: linux-hardening@vger.kernel.org <linux-hardening@vger.kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Puranjay Mohan <puranjay12@gmail.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>  # s390x
Acked-by: Tiezhu Yang <yangtiezhu@loongson.cn>  # LoongArch
Reviewed-by: Johan Almbladh <johan.almbladh@anyfinetworks.com> # MIPS Part
Message-ID: <036b6393f23a2032ce75a1c92220b2afcb798d5d.1709850515.git.christophe.leroy@csgroup.eu>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[portias: Check return and bail when bpf_jit_binary_lock_ro() returns an
error in arm64/net/bpf_jit_comp.c]
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>

2024-09-27 11:14:32 +02:00

..

bpf_jit_32.c

bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()

2024-09-27 11:14:32 +02:00

bpf_jit_32.h

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Makefile

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