joy/android_kernel_sony_sdm845
Watch
1
Fork
You've already forked android_kernel_sony_sdm845
 0
Code Issues Pull requests Projects Releases Wiki Activity
android_kernel_sony_sdm845/kernel
History
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Tatsuhiko Yasumatsu 4fd6663eb0 bpf: Fix integer overflow in prealloc_elems_and_freelist() 
[ Upstream commit 30e29a9a2bc6a4888335a6ede968b75cd329657a ]

In prealloc_elems_and_freelist(), the multiplication to calculate the
size passed to bpf_map_area_alloc() could lead to an integer overflow.
As a result, out-of-bounds write could occur in pcpu_freelist_populate()
as reported by KASAN:

[...]
[   16.968613] BUG: KASAN: slab-out-of-bounds in pcpu_freelist_populate+0xd9/0x100
[   16.969408] Write of size 8 at addr ffff888104fc6ea0 by task crash/78
[   16.970038]
[   16.970195] CPU: 0 PID: 78 Comm: crash Not tainted 5.15.0-rc2+ #1
[   16.970878] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
[   16.972026] Call Trace:
[   16.972306]  dump_stack_lvl+0x34/0x44
[   16.972687]  print_address_description.constprop.0+0x21/0x140
[   16.973297]  ? pcpu_freelist_populate+0xd9/0x100
[   16.973777]  ? pcpu_freelist_populate+0xd9/0x100
[   16.974257]  kasan_report.cold+0x7f/0x11b
[   16.974681]  ? pcpu_freelist_populate+0xd9/0x100
[   16.975190]  pcpu_freelist_populate+0xd9/0x100
[   16.975669]  stack_map_alloc+0x209/0x2a0
[   16.976106]  __sys_bpf+0xd83/0x2ce0
[...]

The possibility of this overflow was originally discussed in [0], but
was overlooked.

Fix the integer overflow by changing elem_size to u64 from u32.

  [0] https://lore.kernel.org/bpf/728b238e-a481-eb50-98e9-b0f430ab01e7@gmail.com/

Fixes: 557c0c6e7d ("bpf: convert stackmap to pre-allocation")
Signed-off-by: Tatsuhiko Yasumatsu <th.yasumatsu@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210930135545.173698-1-th.yasumatsu@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-10-17 10:05:39 +02:00
..
bpf bpf: Fix integer overflow in prealloc_elems_and_freelist() 2021-10-17 10:05:39 +02:00
configs config: android: enable CONFIG_SECCOMP 2016-10-11 15:06:32 -07:00
debug kdb: Make memory allocations more robust 2021-03-03 17:44:31 +01:00
events events: Reuse value read using READ_ONCE instead of re-reading it 2021-09-22 11:43:09 +02:00
gcov gcov: add support for GCC 10.1 2020-09-23 08:46:14 +02:00
irq genirq: Disable interrupts for force threaded handlers 2021-03-24 10:59:26 +01:00
livepatch livepatch/module: make TAINT_LIVEPATCH module-specific 2016-08-26 14:42:08 +02:00
locking futex: Handle early deadlock return correctly 2021-03-30 14:41:42 +02:00
power PM: hibernate: remove the bogus call to get_gendisk() in software_resume() 2020-10-29 09:05:43 +01:00
printk printk: fix deadlock when kernel panic 2021-03-07 11:25:56 +01:00
rcu rcuperf: Fix cleanup path for invalid perf_type strings 2019-05-31 06:48:30 -07:00
sched cpufreq: schedutil: Use kobject release() method to free sugov_tunables 2021-10-06 10:23:41 +02:00
time kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data() 2021-03-24 10:59:25 +01:00
trace blktrace: Fix uaf in blk_trace access after removing by sysfs 2021-10-06 10:23:40 +02:00
.gitignore
acct.c kernel/acct.c: fix the acct->needcheck check in check_free_space() 2018-01-10 09:29:51 +01:00
async.c kernel/async.c: revert "async: simplify lowest_in_progress()" 2018-02-17 13:21:18 +01:00
audit.c audit: fix a net reference leak in audit_list_rules_send() 2021-04-07 12:05:41 +02:00
audit.h audit: fix a net reference leak in audit_list_rules_send() 2021-04-07 12:05:41 +02:00
audit_fsnotify.c
audit_tree.c
audit_watch.c audit: CONFIG_CHANGE don't log internal bookkeeping as an event 2020-10-01 20:40:07 +02:00
auditfilter.c audit: fix a net reference leak in audit_list_rules_send() 2021-04-07 12:05:41 +02:00
auditsc.c audit: print empty EXECVE args 2019-11-28 18:28:55 +01:00
backtracetest.c
bounds.c kbuild: fix kernel/bounds.c 'W=1' warning 2018-11-13 11:16:57 -08:00
capability.c ptrace: Capture the ptracer's creds not PT_PTRACE_CAP 2017-01-06 10:40:13 +01:00
cgroup.c cgroup1: don't allow '\n' in renaming 2021-06-16 11:36:34 +02:00
cgroup_freezer.c
cgroup_pids.c cgroup: pids: use atomic64_t for pids->limit 2019-12-21 10:42:02 +01:00
compat.c
configs.c
context_tracking.c
cpu.c kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling 2020-12-29 13:44:50 +01:00
cpu_pm.c kernel/cpu_pm: Fix uninitted local in cpu_pm 2020-06-20 10:24:21 +02:00
cpuset.c sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs 2017-10-12 11:51:25 +02:00
crash_dump.c
cred.c memcg: account security cred as well to kmemcg 2020-01-12 11:24:13 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c futex: Mark the begin of futex exit explicitly 2021-02-03 23:19:49 +01:00
extable.c kernel/extable.c: mark core_kernel_text notrace 2017-07-21 07:42:21 +02:00
fork.c mm/hugetlb: initialize hugetlb_usage in mm_init 2021-09-22 11:43:08 +02:00
freezer.c freezer, oom: check TIF_MEMDIE on the correct task 2016-07-28 16:07:41 -07:00
futex.c mm, futex: fix shared futex pgoff on shmem huge page 2021-07-11 12:46:40 +02:00
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2018-01-10 09:29:52 +01:00
hung_task.c kernel: hung_task.c: disable on suspend 2019-04-20 09:07:52 +02:00
irq_work.c
jump_label.c jump_label: Invoke jump_label_test() via early_initcall() 2017-12-14 09:28:24 +01:00
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c kcov: ensure irq code sees a valid area 2018-08-03 07:55:12 +02:00
kexec.c kexec: allow architectures to override boot mapping 2016-08-02 19:35:27 -04:00
kexec_core.c objtool, x86: Add several functions and files to the objtool whitelist 2018-06-05 10:28:57 +02:00
kexec_file.c kernel: kexec_file: fix error return code of kexec_calculate_store_digests() 2021-05-22 10:40:31 +02:00
kexec_internal.h
kmod.c usermodehelper: reset umask to default before executing user process 2020-10-14 09:48:14 +02:00
kprobes.c kretprobe: Avoid re-registration of the same kretprobe earlier 2021-02-10 09:09:25 +01:00
ksysfs.c kexec: add a kexec_crash_loaded() function 2016-08-02 19:35:30 -04:00
kthread.c kthread: prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() 2021-07-11 12:46:41 +02:00
latencytop.c
Makefile elfcore: fix building with clang 2021-02-10 09:09:25 +01:00
membarrier.c Fix: Disable sys_membarrier when nohz_full is enabled 2017-03-12 06:41:45 +01:00
memremap.c mm, devm_memremap_pages: kill mapping "System RAM" support 2019-01-13 10:03:51 +01:00
module-internal.h
module.c module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols 2021-03-03 17:44:44 +01:00
module_signing.c
notifier.c x86/mm: split vmalloc_sync_all() 2020-04-02 17:20:26 +02:00
nsproxy.c
padata.c padata: purge get_cpu and reorder_via_wq from padata_do_serial 2020-05-27 16:41:53 +02:00
panic.c panic: ensure preemption is disabled during panic() 2019-10-17 13:42:25 -07:00
params.c
pid.c pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid() 2018-04-13 19:47:53 +02:00
pid_namespace.c memcg: enable accounting for pids in nested pid namespaces 2021-09-22 11:43:08 +02:00
profile.c profiling: fix shift-out-of-bounds bugs 2021-09-26 13:36:18 +02:00
ptrace.c ptrace: make ptrace() fail if the tracee changed its pid unexpectedly 2021-05-26 11:29:06 +02:00
range.c
reboot.c reboot: fix overflow parsing reboot cpu number 2020-11-18 18:26:32 +01:00
relay.c kernel/relay.c: fix memleak on destroy relay channel 2020-08-26 10:29:03 +02:00
resource.c resource: fix integer overflow at reallocation 2018-04-24 09:34:09 +02:00
seccomp.c seccomp: Add missing return in non-void function 2021-03-03 17:44:43 +01:00
signal.c signal: Extend exec_id to 64bits 2020-04-24 07:58:54 +02:00
smp.c cpu/hotplug: Fix SMT supported evaluation 2018-08-15 18:14:53 +02:00
smpboot.c kthread/smpboot: do not park in kthread_create_on_cpu() 2016-10-11 15:06:33 -07:00
smpboot.h
softirq.c Mark HI and TASKLET softirq synchronous 2018-08-15 18:14:42 +02:00
stacktrace.c stacktrace, lockdep: Fix address, newline ugliness 2017-02-14 15:25:42 -08:00
stop_machine.c stop_machine: Use raw spinlocks 2018-08-03 07:55:24 +02:00
sys.c prctl: allow to setup brk for et_dyn executables 2021-09-26 13:36:18 +02:00
sys_ni.c x86/pkeys: Fix pkeys build breakage for some non-x86 arches 2016-09-13 14:41:36 +02:00
sysctl.c sched/rt: Show the 'sched_rr_timeslice' SCHED_RR timeslice tuning knob in milliseconds 2020-07-09 09:35:55 +02:00
sysctl_binary.c
task_work.c task_work: use READ_ONCE/lockless_dereference, avoid pi_lock if !task_works 2016-08-02 19:35:02 -04:00
taskstats.c taskstats: fix data-race 2020-01-12 11:24:12 +01:00
test_kprobes.c
torture.c torture: Convert torture_shutdown() to hrtimer 2016-08-22 10:01:49 -07:00
tracepoint.c tracepoint: Do not fail unregistering a probe due to memory failure 2021-03-03 17:44:38 +01:00
tsacct.c
ucount.c kernel/ucount.c: mark user_header with kmemleak_ignore() 2017-06-17 06:41:51 +02:00
uid16.c kernel: make groups_sort calling a responsibility group_info allocators 2018-01-10 09:29:52 +01:00
up.c smp: Add function to execute a function synchronously on a CPU 2016-09-05 13:52:39 +02:00
user-return-notifier.c
user.c
user_namespace.c userns: move user access out of the mutex 2018-09-09 20:01:24 +02:00
utsname.c Merge branch 'nsfs-ioctls' into HEAD 2016-09-22 20:00:36 -05:00
utsname_sysctl.c sys: don't hold uts_sem while accessing userspace memory 2018-09-09 20:01:24 +02:00
watchdog.c kernel/watchdog: prevent false hardlockup on overloaded system 2017-06-17 06:41:57 +02:00
watchdog_hld.c kernel/watchdog: prevent false hardlockup on overloaded system 2017-06-17 06:41:57 +02:00
workqueue.c workqueue: fix UAF in pwq_unbound_release_workfn() 2021-08-04 11:58:01 +02:00
workqueue_internal.h workqueue: Fix NULL pointer dereference 2017-11-15 15:53:17 +01:00