Adin Scannell ad9c4941d3 libbpf: Fix possible use-after-free for externs ... [ Upstream commit fa6f092cc0 ] The `name` field in `obj->externs` points into the BTF data at initial open time. However, some functions may invalidate this after opening and before loading (e.g. `bpf_map__set_value_size`), which results in pointers into freed memory and undefined behavior. The simplest solution is to simply `strdup` these strings, similar to the `essent_name`, and free them at the same time. In order to test this path, the `global_map_resize` BPF selftest is modified slightly to ensure the presence of an extern, which causes this test to fail prior to the fix. Given there isn't an obvious API or error to test against, I opted to add this to the existing test as an aspect of the resizing feature rather than duplicate the test. Fixes: 9d0a23313b ("libbpf: Add capability for resizing datasec maps") Signed-off-by: Adin Scannell <amscanne@meta.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20250625050215.2777374-1-amscanne@meta.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2025-07-06 11:00:12 +02:00
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accounting
arch	tools/x86/kcpuid: Fix error handling	2025-06-19 15:28:01 +02:00
bootconfig	tools/bootconfig: Fix the wrong format specifier	2025-02-08 09:52:28 +01:00
bpf	tools/resolve_btfids: Fix build when cross compiling kernel with clang.	2025-06-19 15:28:44 +02:00
build	tools/build: Don't pass test log files to linker	2025-06-04 14:41:56 +02:00
certs
cgroup
counter
crypto/ccp
debugging
edid
firewire
firmware
gpio
hv	tools: hv: change permissions of NetworkManager configuration file	2024-12-27 13:58:46 +01:00
iio	tools/iio: Add memory allocation failure check for trigger_name	2024-10-17 15:24:20 +02:00
include	bpf: Fix L4 csum update on IPv6 in CHECKSUM_COMPLETE	2025-06-27 11:09:00 +01:00
kvm/kvm_stat
laptop
leds
lib	libbpf: Fix possible use-after-free for externs	2025-07-06 11:00:12 +02:00
memory-model
mm	tools/mm: fix compile error	2024-11-22 15:38:33 +01:00
net/ynl	tools: ynl-gen: validate 0 len strings from kernel	2025-06-04 14:42:16 +02:00
objtool	objtool: Fix error handling inconsistencies in check()	2025-06-04 14:41:58 +02:00
pci
pcmcia
perf	perf evsel: Missed close() when probing hybrid core PMUs	2025-06-27 11:09:04 +01:00
power	pm: cpupower: bench: Prevent NULL dereference on malloc failure	2025-04-25 10:45:10 +02:00
rcu
scripts	tools: Override makefile ARCH variable if defined, but empty	2024-12-14 19:59:49 +01:00
spi
testing	libbpf: Fix possible use-after-free for externs	2025-07-06 11:00:12 +02:00
thermal
time
tracing	rtla/timerlat_top: Set OSNOISE_WORKLOAD for kernel threads	2025-03-07 16:45:49 +01:00
usb	usbip: tools: Fix detach_port() invalid port error path	2024-11-08 16:28:22 +01:00
verification	verification/dot2: Improve dot parser robustness	2024-12-14 20:00:13 +01:00
virtio
wmi
workqueue
Makefile