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linux/tools/bpf/bpftool
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Yuan Chen 01639d9313 bpftool: Fix memory leak in dump_xx_nlmsg on realloc failure 
[ Upstream commit 99fe8af069 ]

In function dump_xx_nlmsg(), when realloc() fails to allocate memory,
the original pointer to the buffer is overwritten with NULL. This causes
a memory leak because the previously allocated buffer becomes unreachable
without being freed.

Fixes: 7900efc192 ("tools/bpf: bpftool: improve output format for bpftool net")
Signed-off-by: Yuan Chen <chenyuan@kylinos.cn>
Reviewed-by: Quentin Monnet <qmo@kernel.org>
Link: https://lore.kernel.org/r/20250620012133.14819-1-chenyuan_fl@163.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-08-15 12:04:56 +02:00
..
bash-completion bpftool: Rename "bpftool feature list" into "... feature list_builtins" 2022-07-05 11:53:54 +02:00
Documentation bpf: Define new BPF_MAP_TYPE_USER_RINGBUF map type 2022-09-21 16:24:17 -07:00
skeleton bpftool: Fix missing pids during link show 2024-06-12 11:03:07 +02:00
.gitignore bpftool: Fix SPDX tag for Makefiles and .gitignore 2021-11-10 09:00:52 -08:00
btf.c bpftool: Fix error message of strerror 2022-09-30 15:40:46 -07:00
btf_dumper.c bpftool: Fix a wrong type cast in btf_dumper_int 2022-08-25 11:43:08 -07:00
cfg.c tools, bpftool: Poison and replace kernel integer typedefs 2020-05-11 21:20:46 +02:00
cfg.h tools: bpftool: replace Netronome boilerplate with SPDX license headers 2018-12-13 12:08:44 +01:00
cgroup.c bpftool: Fix wrong cgroup attach flags being assigned to effective progs 2022-09-21 10:57:12 -07:00
common.c bpftool: Fix readlink usage in get_fd_type 2025-06-04 14:40:17 +02:00
feature.c bpftool: JIT limited misreported as negative value on aarch64 2023-07-19 16:21:05 +02:00
gen.c bpftool: Fix error message of strerror 2022-09-30 15:40:46 -07:00
iter.c bpftool: Use libbpf_get_error() to check error 2021-11-14 18:38:13 -08:00
jit_disasm.c bpftool: Remove asserts from JIT disassembler 2024-12-14 19:54:29 +01:00
json_writer.c tools: bpftool: Remove invalid \' json escape 2023-05-11 23:03:17 +09:00
json_writer.h bpftool: Support dumping metadata 2020-09-15 18:28:27 -07:00
link.c bpftool: Show parameters of BPF task iterators. 2022-09-28 16:30:08 -07:00
main.c bpftool: Clear errno after libcap's checks 2022-08-15 20:37:33 +02:00
main.h bpftool: Remove asserts from JIT disassembler 2024-12-14 19:54:29 +01:00
Makefile bpftool: Always disable stack protection for BPF objects 2023-03-10 09:33:49 +01:00
map.c bpftool: Remove asserts from JIT disassembler 2024-12-14 19:54:29 +01:00
map_perf_ring.c bpftool: Fix error message of strerror 2022-09-30 15:40:46 -07:00
net.c bpftool: Fix memory leak in dump_xx_nlmsg on realloc failure 2025-08-15 12:04:56 +02:00
netlink_dumper.c bpftool: Use consistent include paths for libbpf 2020-01-20 16:37:45 -08:00
netlink_dumper.h tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
perf.c bpftool, musl compat: Replace nftw with FTW_ACTIONRETVAL 2022-04-25 23:24:16 +02:00
pids.c Revert "bpftool: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK" 2022-06-14 22:18:06 +02:00
prog.c bpftool: fix potential NULL pointer dereferencing in prog_dump() 2024-12-14 19:54:29 +01:00
struct_ops.c Revert "bpftool: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK" 2022-06-14 22:18:06 +02:00
tracelog.c bpftool, musl compat: Replace sys/fcntl.h by fcntl.h 2022-04-25 23:24:28 +02:00
xlated_dumper.c bpftool: Fix bug for long instructions in program CFG dumps 2023-05-11 23:03:21 +09:00
xlated_dumper.h tools: bpftool: replace Netronome boilerplate with SPDX license headers 2018-12-13 12:08:44 +01:00