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Stanislav FomichevandGreg Kroah-Hartman 3ed29995c2 bpf: Don't leak memory in bpf getsockopt when optlen == 0 
commit 4be34f3d07 upstream.

optlen == 0 indicates that the kernel should ignore BPF buffer
and use the original one from the user. We, however, forget
to free the temporary buffer that we've allocated for BPF.

Fixes: d8fe449a9c ("bpf: Don't return EINVAL from {get,set}sockopt when optlen > PAGE_SIZE")
Reported-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210112162829.775079-1-sdf@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-23 16:03:58 +01:00
..
bpf
bpf: Don't leak memory in bpf getsockopt when optlen == 0
2021-01-23 16:03:58 +01:00
cgroup
cgroup: Fix memory leak when parsing multiple source parameters
2021-01-06 14:56:51 +01:00
configs
…
debug
kdb: Fix pager search for multi-line strings
2020-10-01 14:44:08 +01:00
dma
swiotlb: remove the tbl_dma_addr argument to swiotlb_tbl_map_single
2020-11-02 10:10:39 -05:00
entry
entry: Fix the incorrect ordering of lockdep and RCU check
2020-11-04 18:06:14 +01:00
events
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
gcov
gcov: add support for GCC 10.1
2020-09-11 09:33:54 -07:00
irq
genirq/irqdomain: Don't try to free an interrupt that has no mapping
2020-12-30 11:53:25 +01:00
kcsan
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
livepatch
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
locking
rwsem: Implement down_read_interruptible
2021-01-09 13:46:24 +01:00
power
PM: sleep: fix typo in kernel/power/process.c
2020-10-27 19:11:44 +01:00
printk
Merge tag 'printk-for-5.10-rc6-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
2020-11-27 10:38:36 -08:00
rcu
rcu-tasks: Move RCU-tasks initialization to before early_initcall()
2021-01-19 18:27:28 +01:00
sched
sched: Reenable interrupts in do_sched_yield()
2020-12-30 11:52:59 +01:00
time
tick/sched: Remove bogus boot "safety" check
2021-01-06 14:56:55 +01:00
trace
tracing/kprobes: Do the notrace functions check without kprobes on ftrace
2021-01-19 18:27:19 +01:00
.gitignore
…
acct.c
kernel: acct.c: fix some kernel-doc nits
2020-10-16 11:11:19 -07:00
async.c
…
audit_fsnotify.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_tree.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit_watch.c
fsnotify: generalize handle_inode_event()
2020-12-30 11:54:18 +01:00
audit.c
audit: Remove redundant null check
2020-08-26 09:10:39 -04:00
audit.h
audit: change unnecessary globals into statics
2020-08-17 20:26:58 -04:00
auditfilter.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
auditsc.c
…
backtracetest.c
…
bounds.c
…
capability.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
compat.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
configs.c
…
context_tracking.c
…
cpu_pm.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
cpu.c
kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
2020-11-27 00:10:39 +11:00
crash_core.c
…
crash_dump.c
…
cred.c
…
delayacct.c
…
dma.c
…
exec_domain.c
…
exit.c
don't dump the threads that had been already exiting when zapped.
2020-10-28 16:39:49 -04:00
extable.c
…
fail_function.c
fail_function: Remove a redundant mutex unlock
2020-11-19 11:58:16 -08:00
fork.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
freezer.c
…
futex.c
futex: Don't enable IRQs unconditionally in put_pi_state()
2020-11-09 14:30:30 +01:00
gen_kheaders.sh
…
groups.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
hung_task.c
kernel/hung_task.c: make type annotations consistent
2020-11-02 12:14:19 -08:00
iomem.c
…
irq_work.c
…
jump_label.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
kallsyms.c
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
kcmp.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
…
kexec_core.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
kexec_elf.c
…
kexec_file.c
kernel/resource: move and rename IORESOURCE_MEM_DRIVER_MANAGED
2020-10-16 11:11:18 -07:00
kexec_internal.h
…
kexec.c
LSM: Introduce kernel_post_load_data() hook
2020-10-05 13:37:03 +02:00
kheaders.c
…
kmod.c
…
kprobes.c
kprobes: Tell lockdep about kprobe nesting
2020-11-04 09:46:06 -05:00
ksysfs.c
…
kthread.c
kthread_worker: prevent queuing delayed work from timer_fn when it is being canceled
2020-11-02 12:14:19 -08:00
latencytop.c
…
Makefile
elfcore: fix building with clang
2020-12-11 14:02:14 -08:00
module_signature.c
…
module_signing.c
…
module-internal.h
…
module.c
module: delay kobject uevent until after module init call
2021-01-06 14:56:54 +01:00
notifier.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
nsproxy.c
…
padata.c
padata: fix possible padata_works_lock deadlock
2020-09-04 17:51:55 +10:00
panic.c
panic: don't dump stack twice on warn
2020-11-14 11:26:04 -08:00
params.c
params: Replace zero-length array with flexible-array member
2020-10-29 17:22:59 -05:00
pid_namespace.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
pid.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:46:24 +01:00
profile.c
…
ptrace.c
ptrace: Set PF_SUPERPRIV when checking capability
2020-11-17 12:53:22 -08:00
range.c
kernel.h: split out min()/max() et al. helpers
2020-10-16 11:11:19 -07:00
reboot.c
reboot: fix overflow parsing reboot cpu number
2020-11-14 11:26:03 -08:00
regset.c
…
relay.c
kernel/relay.c: drop unneeded initialization
2020-10-16 11:11:22 -07:00
resource.c
kernel/resource: make iomem_resource implicit in release_mem_region_adjustable()
2020-10-16 11:11:18 -07:00
rseq.c
…
scftorture.c
scftorture: Add cond_resched() to test loop
2020-08-24 18:38:38 -07:00
scs.c
…
seccomp.c
seccomp: Set PF_SUPERPRIV when checking capability
2020-11-17 12:53:22 -08:00
signal.c
ptrace: fix task_join_group_stop() for the case when current is traced
2020-11-02 12:14:19 -08:00
smp.c
Merge tag 'core-rcu-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-10-18 14:34:50 -07:00
smpboot.c
…
smpboot.h
…
softirq.c
softirq: Add debug check to __raise_softirq_irqoff()
2020-09-16 15:18:56 +02:00
stackleak.c
stackleak: let stack_erasing_sysctl take a kernel pointer buffer
2020-09-19 13:13:39 -07:00
stacktrace.c
stacktrace: Remove reliable argument from arch_stack_walk() callback
2020-09-18 14:24:16 +01:00
static_call.c
static_call: Fix return type of static_call_init
2020-10-02 21:18:25 +02:00
stop_machine.c
stop_machine, rcu: Mark functions as notrace
2020-10-26 12:12:27 +01:00
sys_ni.c
mm/madvise: introduce process_madvise() syscall: an external memory hinting API
2020-10-18 09:27:10 -07:00
sys.c
kernel/sys.c: fix prototype of prctl_get_tid_address()
2020-10-25 11:44:16 -07:00
sysctl-test.c
…
sysctl.c
mm: allow a controlled amount of unfairness in the page lock
2020-09-17 10:26:41 -07:00
task_work.c
task_work: cleanup notification modes
2020-10-17 15:05:30 -06:00
taskstats.c
taskstats: move specifying netlink policy back to ops
2020-10-02 19:11:12 -07:00
test_kprobes.c
…
torture.c
…
tracepoint.c
tracepoint: Replace zero-length array with flexible-array member
2020-10-29 17:22:59 -05:00
tsacct.c
…
ucount.c
…
uid16.c
…
uid16.h
…
umh.c
usermodehelper: reset umask to default before executing user process
2020-10-06 10:31:52 -07:00
up.c
…
user_namespace.c
kernel/: fix repeated words in comments
2020-10-16 11:11:19 -07:00
user-return-notifier.c
…
user.c
…
usermode_driver.c
…
utsname_sysctl.c
…
utsname.c
…
watch_queue.c
watch_queue: Limit the number of watches a user can hold
2020-08-17 09:39:18 -07:00
watchdog_hld.c
…
watchdog.c
kernel/watchdog: fix watchdog_allowed_mask not used warning
2020-11-14 11:26:03 -08:00
workqueue_internal.h
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workqueue.c
workqueue: Kick a worker based on the actual activation of delayed works
2021-01-12 20:18:14 +01:00