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Kees Cook a1f2920a05 bpf: Always use maximal size for copy_array()

[ Upstream commit 45435d8da71f9f3e6860e6e6ea9667b6ec17ec64 ]

Instead of counting on prior allocations to have sized allocations to
the next kmalloc bucket size, always perform a krealloc that is at least
ksize(dst) in size (which is a no-op), so the size can be correctly
tracked by all the various allocation size trackers (KASAN,
__alloc_size, etc).

Reported-by: Hyunwoo Kim <v4bel@theori.io>
Link: https://lore.kernel.org/bpf/20221223094551.GA1439509@ubuntu
Fixes: ceb35b666d42 ("bpf/verifier: Use kmalloc_size_roundup() to match ksize() usage")
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Song Liu <song@kernel.org>
Cc: Yonghong Song <yhs@fb.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Stanislav Fomichev <sdf@google.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: bpf@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221223182836.never.866-kees@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-01-12 12:02:15 +01:00

..

bpf: Always use maximal size for copy_array()

2023-01-12 12:02:15 +01:00

memcg: Fix possible use-after-free in memcg_write_event_control()

2022-12-08 10:40:58 -08:00

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Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-10-10 17:53:04 -07:00

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perf/core: Call LSM hook after copying perf_event_attr

2023-01-07 11:11:46 +01:00

futex: Fix futex_waitv() hrtimer debug object leak on kcalloc error

2023-01-04 11:28:58 +01:00

gcov: add support for checksum field

2022-12-31 13:33:11 +01:00

genirq/irqdesc: Don't try to remove non-existing sysfs files

2022-12-31 13:31:58 +01:00

kcsan: Instrument memcpy/memset/memmove with newer Clang

2023-01-04 11:29:02 +01:00

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rtmutex: Add acquire semantics for rtmutex lock acquisition slow path

2023-01-04 11:28:58 +01:00

module: Fix NULL vs IS_ERR checking for module_get_next_page

2022-12-31 13:32:10 +01:00

PM: hibernate: Fix mistake in kerneldoc comment

2022-12-31 13:31:55 +01:00

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rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()

2022-12-31 13:32:56 +01:00

sched/psi: Fix possible missing or delayed pending event

2022-12-31 13:31:55 +01:00

treewide: use prandom_u32_max() when possible, part 1

2022-10-11 17:42:55 -06:00

tracing: Fix infinite loop in tracing_read_pipe on overflowed print_trace_line

2023-01-07 11:11:49 +01:00

.gitignore

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acct.c

acct: fix potential integer overflow in encode_comp_t()

2022-12-31 13:32:58 +01:00

async.c

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audit_fsnotify.c

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audit_tree.c

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audit_watch.c

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audit.c

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audit.h

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auditfilter.c

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auditsc.c

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backtracetest.c

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bounds.c

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capability.c

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cfi.c

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compat.c

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configs.c

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context_tracking.c

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cpu_pm.c

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cpu.c

cpu/hotplug: Do not bail-out in DYING/STARTING sections

2022-12-31 13:31:59 +01:00

crash_core.c

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crash_dump.c

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cred.c

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delayacct.c

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dma.c

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exec_domain.c

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exit.c

Merge tag 'mm-nonmm-stable-2022-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-10-12 11:00:22 -07:00

extable.c

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fail_function.c

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fork.c

seccomp: Move copy_seccomp() to no failure path.

2022-12-31 13:31:53 +01:00

freezer.c

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gen_kheaders.sh

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groups.c

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hung_task.c

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iomem.c

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irq_work.c

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jump_label.c

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kallsyms_internal.h

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kallsyms.c

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kcmp.c

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kcov.c

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kexec_core.c

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kexec_elf.c

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kexec_file.c

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kexec_internal.h

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kexec.c

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kheaders.c

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kmod.c

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kprobes.c

kprobes: kretprobe events missing on 2-core KVM guest

2023-01-04 11:28:58 +01:00

ksysfs.c

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kthread.c

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latencytop.c

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Makefile

cfi: Fix CFI failure with KASAN

2022-12-31 13:33:08 +01:00

module_signature.c

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notifier.c

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nsproxy.c

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padata.c

padata: Fix list iterator in padata_do_serial()

2022-12-31 13:32:34 +01:00

panic.c

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params.c

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pid_namespace.c

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pid.c

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profile.c

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ptrace.c

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range.c

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reboot.c

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regset.c

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relay.c

relay: fix type mismatch when allocating memory in relay_create_buf()

2022-12-31 13:32:00 +01:00

resource_kunit.c

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resource.c

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rseq.c

rseq: Use pr_warn_once() when deprecated/unknown ABI flags are encountered

2022-11-14 09:58:32 +01:00

scftorture.c

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scs.c

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seccomp.c

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signal.c

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smp.c

Merge tag 'bitmap-6.1-rc1' of https://github.com/norov/linux

2022-10-10 12:49:34 -07:00

smpboot.c

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smpboot.h

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softirq.c

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stackleak.c

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stacktrace.c

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static_call_inline.c

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static_call.c

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stop_machine.c

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sys_ni.c

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sys.c

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sysctl-test.c

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sysctl.c

proc: proc_skip_spaces() shouldn't think it is working on C strings

2022-12-05 12:09:06 -08:00

task_work.c

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taskstats.c

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torture.c

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tracepoint.c

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tsacct.c

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ucount.c

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uid16.c

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uid16.h

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umh.c

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up.c

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user_namespace.c

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user-return-notifier.c

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user.c

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usermode_driver.c

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utsname_sysctl.c

kernel/utsname_sysctl.c: Fix hostname polling

2022-10-23 12:01:01 -07:00

utsname.c

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watch_queue.c

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watchdog_hld.c

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watchdog.c

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workqueue_internal.h

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workqueue.c

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