Revision 9cc02ede696272c5271a401e4f27c262359bc2f6 authored by Duoming Zhou on 29 June 2022, 00:26:40 UTC, committed by Paolo Abeni on 30 June 2022, 09:07:30 UTC
There are UAF bugs in rose_heartbeat_expiry(), rose_timer_expiry() and rose_idletimer_expiry(). The root cause is that del_timer() could not stop the timer handler that is running and the refcount of sock is not managed properly. One of the UAF bugs is shown below: (thread 1) | (thread 2) | rose_bind | rose_connect | rose_start_heartbeat rose_release | (wait a time) case ROSE_STATE_0 | rose_destroy_socket | rose_heartbeat_expiry rose_stop_heartbeat | sock_put(sk) | ... sock_put(sk) // FREE | | bh_lock_sock(sk) // USE The sock is deallocated by sock_put() in rose_release() and then used by bh_lock_sock() in rose_heartbeat_expiry(). Although rose_destroy_socket() calls rose_stop_heartbeat(), it could not stop the timer that is running. The KASAN report triggered by POC is shown below: BUG: KASAN: use-after-free in _raw_spin_lock+0x5a/0x110 Write of size 4 at addr ffff88800ae59098 by task swapper/3/0 ... Call Trace: <IRQ> dump_stack_lvl+0xbf/0xee print_address_description+0x7b/0x440 print_report+0x101/0x230 ? irq_work_single+0xbb/0x140 ? _raw_spin_lock+0x5a/0x110 kasan_report+0xed/0x120 ? _raw_spin_lock+0x5a/0x110 kasan_check_range+0x2bd/0x2e0 _raw_spin_lock+0x5a/0x110 rose_heartbeat_expiry+0x39/0x370 ? rose_start_heartbeat+0xb0/0xb0 call_timer_fn+0x2d/0x1c0 ? rose_start_heartbeat+0xb0/0xb0 expire_timers+0x1f3/0x320 __run_timers+0x3ff/0x4d0 run_timer_softirq+0x41/0x80 __do_softirq+0x233/0x544 irq_exit_rcu+0x41/0xa0 sysvec_apic_timer_interrupt+0x8c/0xb0 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1b/0x20 RIP: 0010:default_idle+0xb/0x10 RSP: 0018:ffffc9000012fea0 EFLAGS: 00000202 RAX: 000000000000bcae RBX: ffff888006660f00 RCX: 000000000000bcae RDX: 0000000000000001 RSI: ffffffff843a11c0 RDI: ffffffff843a1180 RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed100da36d46 R10: dfffe9100da36d47 R11: ffffffff83cf0950 R12: 0000000000000000 R13: 1ffff11000ccc1e0 R14: ffffffff8542af28 R15: dffffc0000000000 ... Allocated by task 146: __kasan_kmalloc+0xc4/0xf0 sk_prot_alloc+0xdd/0x1a0 sk_alloc+0x2d/0x4e0 rose_create+0x7b/0x330 __sock_create+0x2dd/0x640 __sys_socket+0xc7/0x270 __x64_sys_socket+0x71/0x80 do_syscall_64+0x43/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Freed by task 152: kasan_set_track+0x4c/0x70 kasan_set_free_info+0x1f/0x40 ____kasan_slab_free+0x124/0x190 kfree+0xd3/0x270 __sk_destruct+0x314/0x460 rose_release+0x2fa/0x3b0 sock_close+0xcb/0x230 __fput+0x2d9/0x650 task_work_run+0xd6/0x160 exit_to_user_mode_loop+0xc7/0xd0 exit_to_user_mode_prepare+0x4e/0x80 syscall_exit_to_user_mode+0x20/0x40 do_syscall_64+0x4f/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 This patch adds refcount of sock when we use functions such as rose_start_heartbeat() and so on to start timer, and decreases the refcount of sock when timer is finished or deleted by functions such as rose_stop_heartbeat() and so on. As a result, the UAF bugs could be mitigated. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Duoming Zhou <duoming@zju.edu.cn> Tested-by: Duoming Zhou <duoming@zju.edu.cn> Link: https://lore.kernel.org/r/20220629002640.5693-1-duoming@zju.edu.cn Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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crypto | ||
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fonts | ||
kunit | ||
livepatch | ||
lz4 | ||
lzo | ||
math | ||
mpi | ||
pldmfw | ||
raid6 | ||
reed_solomon | ||
test_fortify | ||
vdso | ||
xz | ||
zlib_deflate | ||
zlib_dfltcc | ||
zlib_inflate | ||
zstd | ||
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Kconfig | -rw-r--r-- | 16.5 KB |
Kconfig.debug | -rw-r--r-- | 87.4 KB |
Kconfig.kasan | -rw-r--r-- | 6.6 KB |
Kconfig.kcsan | -rw-r--r-- | 10.0 KB |
Kconfig.kfence | -rw-r--r-- | 3.6 KB |
Kconfig.kgdb | -rw-r--r-- | 5.6 KB |
Kconfig.ubsan | -rw-r--r-- | 5.3 KB |
Makefile | -rw-r--r-- | 14.0 KB |
argv_split.c | -rw-r--r-- | 2.1 KB |
ashldi3.c | -rw-r--r-- | 541 bytes |
ashrdi3.c | -rw-r--r-- | 565 bytes |
asn1_decoder.c | -rw-r--r-- | 13.2 KB |
asn1_encoder.c | -rw-r--r-- | 10.3 KB |
assoc_array.c | -rw-r--r-- | 51.9 KB |
atomic64.c | -rw-r--r-- | 4.5 KB |
atomic64_test.c | -rw-r--r-- | 6.4 KB |
audit.c | -rw-r--r-- | 1.9 KB |
bcd.c | -rw-r--r-- | 297 bytes |
bch.c | -rw-r--r-- | 38.3 KB |
bitfield_kunit.c | -rw-r--r-- | 4.4 KB |
bitmap.c | -rw-r--r-- | 46.9 KB |
bitrev.c | -rw-r--r-- | 1.9 KB |
bootconfig-data.S | -rw-r--r-- | 275 bytes |
bootconfig.c | -rw-r--r-- | 21.5 KB |
bsearch.c | -rw-r--r-- | 1.2 KB |
btree.c | -rw-r--r-- | 19.2 KB |
bucket_locks.c | -rw-r--r-- | 1.4 KB |
bug.c | -rw-r--r-- | 5.9 KB |
build_OID_registry | -rwxr-xr-x | 4.5 KB |
buildid.c | -rw-r--r-- | 5.0 KB |
bust_spinlocks.c | -rw-r--r-- | 676 bytes |
check_signature.c | -rw-r--r-- | 635 bytes |
checksum.c | -rw-r--r-- | 4.1 KB |
clz_ctz.c | -rw-r--r-- | 1.2 KB |
clz_tab.c | -rw-r--r-- | 891 bytes |
cmdline.c | -rw-r--r-- | 5.8 KB |
cmdline_kunit.c | -rw-r--r-- | 4.2 KB |
cmpdi2.c | -rw-r--r-- | 501 bytes |
compat_audit.c | -rw-r--r-- | 1002 bytes |
cpu_rmap.c | -rw-r--r-- | 7.6 KB |
cpumask.c | -rw-r--r-- | 7.1 KB |
crc-ccitt.c | -rw-r--r-- | 5.6 KB |
crc-itu-t.c | -rw-r--r-- | 2.7 KB |
crc-t10dif.c | -rw-r--r-- | 3.2 KB |
crc16.c | -rw-r--r-- | 2.7 KB |
crc32.c | -rw-r--r-- | 9.3 KB |
crc32defs.h | -rw-r--r-- | 1.6 KB |
crc32test.c | -rw-r--r-- | 37.4 KB |
crc4.c | -rw-r--r-- | 1003 bytes |
crc64-rocksoft.c | -rw-r--r-- | 3.2 KB |
crc64.c | -rw-r--r-- | 2.6 KB |
crc7.c | -rw-r--r-- | 2.5 KB |
crc8.c | -rw-r--r-- | 2.4 KB |
ctype.c | -rw-r--r-- | 1.4 KB |
debug_info.c | -rw-r--r-- | 782 bytes |
debug_locks.c | -rw-r--r-- | 1.2 KB |
debugobjects.c | -rw-r--r-- | 35.3 KB |
dec_and_lock.c | -rw-r--r-- | 1.2 KB |
decompress.c | -rw-r--r-- | 1.8 KB |
decompress_bunzip2.c | -rw-r--r-- | 23.5 KB |
decompress_inflate.c | -rw-r--r-- | 4.8 KB |
decompress_unlz4.c | -rw-r--r-- | 4.2 KB |
decompress_unlzma.c | -rw-r--r-- | 15.8 KB |
decompress_unlzo.c | -rw-r--r-- | 6.4 KB |
decompress_unxz.c | -rw-r--r-- | 10.9 KB |
decompress_unzstd.c | -rw-r--r-- | 10.2 KB |
devmem_is_allowed.c | -rw-r--r-- | 683 bytes |
devres.c | -rw-r--r-- | 14.9 KB |
digsig.c | -rw-r--r-- | 5.5 KB |
dump_stack.c | -rw-r--r-- | 3.0 KB |
dynamic_debug.c | -rw-r--r-- | 27.9 KB |
dynamic_queue_limits.c | -rw-r--r-- | 4.3 KB |
earlycpio.c | -rw-r--r-- | 3.6 KB |
errname.c | -rw-r--r-- | 3.7 KB |
error-inject.c | -rw-r--r-- | 5.5 KB |
errseq.c | -rw-r--r-- | 6.6 KB |
extable.c | -rw-r--r-- | 2.9 KB |
fault-inject-usercopy.c | -rw-r--r-- | 823 bytes |
fault-inject.c | -rw-r--r-- | 5.9 KB |
fdt.c | -rw-r--r-- | 69 bytes |
fdt_addresses.c | -rw-r--r-- | 79 bytes |
fdt_empty_tree.c | -rw-r--r-- | 80 bytes |
fdt_ro.c | -rw-r--r-- | 72 bytes |
fdt_rw.c | -rw-r--r-- | 72 bytes |
fdt_strerror.c | -rw-r--r-- | 78 bytes |
fdt_sw.c | -rw-r--r-- | 72 bytes |
fdt_wip.c | -rw-r--r-- | 73 bytes |
find_bit.c | -rw-r--r-- | 3.7 KB |
find_bit_benchmark.c | -rw-r--r-- | 4.5 KB |
flex_proportions.c | -rw-r--r-- | 7.2 KB |
gen_crc32table.c | -rw-r--r-- | 3.3 KB |
gen_crc64table.c | -rw-r--r-- | 2.1 KB |
genalloc.c | -rw-r--r-- | 26.4 KB |
generic-radix-tree.c | -rw-r--r-- | 5.3 KB |
glob.c | -rw-r--r-- | 3.5 KB |
globtest.c | -rw-r--r-- | 4.2 KB |
hexdump.c | -rw-r--r-- | 8.5 KB |
hweight.c | -rw-r--r-- | 1.9 KB |
idr.c | -rw-r--r-- | 17.5 KB |
inflate.c | -rw-r--r-- | 38.7 KB |
interval_tree.c | -rw-r--r-- | 540 bytes |
interval_tree_test.c | -rw-r--r-- | 3.4 KB |
iomap.c | -rw-r--r-- | 9.1 KB |
iomap_copy.c | -rw-r--r-- | 2.2 KB |
iommu-helper.c | -rw-r--r-- | 755 bytes |
iov_iter.c | -rw-r--r-- | 49.2 KB |
irq_poll.c | -rw-r--r-- | 5.6 KB |
irq_regs.c | -rw-r--r-- | 394 bytes |
is_single_threaded.c | -rw-r--r-- | 1.2 KB |
kasprintf.c | -rw-r--r-- | 1.4 KB |
kfifo.c | -rw-r--r-- | 12.1 KB |
klist.c | -rw-r--r-- | 10.4 KB |
kobject.c | -rw-r--r-- | 27.4 KB |
kobject_uevent.c | -rw-r--r-- | 18.9 KB |
kstrtox.c | -rw-r--r-- | 10.8 KB |
kstrtox.h | -rw-r--r-- | 411 bytes |
libcrc32c.c | -rw-r--r-- | 2.0 KB |
linear_ranges.c | -rw-r--r-- | 8.1 KB |
list-test.c | -rw-r--r-- | 28.0 KB |
list_debug.c | -rw-r--r-- | 1.9 KB |
list_sort.c | -rw-r--r-- | 8.2 KB |
llist.c | -rw-r--r-- | 2.5 KB |
locking-selftest-hardirq.h | -rw-r--r-- | 246 bytes |
locking-selftest-mutex.h | -rw-r--r-- | 159 bytes |
locking-selftest-rlock-hardirq.h | -rw-r--r-- | 74 bytes |
locking-selftest-rlock-softirq.h | -rw-r--r-- | 74 bytes |
locking-selftest-rlock.h | -rw-r--r-- | 197 bytes |
locking-selftest-rsem.h | -rw-r--r-- | 202 bytes |
locking-selftest-rtmutex.h | -rw-r--r-- | 162 bytes |
locking-selftest-softirq.h | -rw-r--r-- | 246 bytes |
locking-selftest-spin-hardirq.h | -rw-r--r-- | 73 bytes |
locking-selftest-spin-softirq.h | -rw-r--r-- | 73 bytes |
locking-selftest-spin.h | -rw-r--r-- | 157 bytes |
locking-selftest-wlock-hardirq.h | -rw-r--r-- | 74 bytes |
locking-selftest-wlock-softirq.h | -rw-r--r-- | 74 bytes |
locking-selftest-wlock.h | -rw-r--r-- | 197 bytes |
locking-selftest-wsem.h | -rw-r--r-- | 202 bytes |
locking-selftest.c | -rw-r--r-- | 65.6 KB |
lockref.c | -rw-r--r-- | 4.4 KB |
logic_iomem.c | -rw-r--r-- | 7.2 KB |
logic_pio.c | -rw-r--r-- | 8.5 KB |
lru_cache.c | -rw-r--r-- | 18.8 KB |
lshrdi3.c | -rw-r--r-- | 559 bytes |
memcat_p.c | -rw-r--r-- | 753 bytes |
memcpy_kunit.c | -rw-r--r-- | 8.0 KB |
memneq.c | -rw-r--r-- | 6.4 KB |
memory-notifier-error-inject.c | -rw-r--r-- | 1.1 KB |
memregion.c | -rw-r--r-- | 429 bytes |
memweight.c | -rw-r--r-- | 1.0 KB |
muldi3.c | -rw-r--r-- | 1.7 KB |
net_utils.c | -rw-r--r-- | 640 bytes |
netdev-notifier-error-inject.c | -rw-r--r-- | 1.5 KB |
nlattr.c | -rw-r--r-- | 26.9 KB |
nmi_backtrace.c | -rw-r--r-- | 3.3 KB |
nodemask.c | -rw-r--r-- | 671 bytes |
notifier-error-inject.c | -rw-r--r-- | 2.5 KB |
notifier-error-inject.h | -rw-r--r-- | 653 bytes |
objagg.c | -rw-r--r-- | 28.2 KB |
of-reconfig-notifier-error-inject.c | -rw-r--r-- | 1.3 KB |
oid_registry.c | -rw-r--r-- | 4.4 KB |
once.c | -rw-r--r-- | 1.5 KB |
overflow_kunit.c | -rw-r--r-- | 25.1 KB |
packing.c | -rw-r--r-- | 6.5 KB |
parman.c | -rw-r--r-- | 10.6 KB |
parser.c | -rw-r--r-- | 8.9 KB |
pci_iomap.c | -rw-r--r-- | 5.7 KB |
percpu-refcount.c | -rw-r--r-- | 15.3 KB |
percpu_counter.c | -rw-r--r-- | 6.4 KB |
percpu_test.c | -rw-r--r-- | 3.2 KB |
plist.c | -rw-r--r-- | 5.9 KB |
pm-notifier-error-inject.c | -rw-r--r-- | 1.2 KB |
polynomial.c | -rw-r--r-- | 3.6 KB |
radix-tree.c | -rw-r--r-- | 43.1 KB |
random32.c | -rw-r--r-- | 9.1 KB |
ratelimit.c | -rw-r--r-- | 1.6 KB |
rbtree.c | -rw-r--r-- | 17.1 KB |
rbtree_test.c | -rw-r--r-- | 9.4 KB |
ref_tracker.c | -rw-r--r-- | 4.0 KB |
refcount.c | -rw-r--r-- | 4.8 KB |
rhashtable.c | -rw-r--r-- | 29.5 KB |
sbitmap.c | -rw-r--r-- | 19.2 KB |
scatterlist.c | -rw-r--r-- | 28.1 KB |
seq_buf.c | -rw-r--r-- | 10.0 KB |
sg_pool.c | -rw-r--r-- | 4.2 KB |
sg_split.c | -rw-r--r-- | 5.0 KB |
sha1.c | -rw-r--r-- | 4.4 KB |
show_mem.c | -rw-r--r-- | 1.1 KB |
siphash.c | -rw-r--r-- | 11.6 KB |
slub_kunit.c | -rw-r--r-- | 3.4 KB |
smp_processor_id.c | -rw-r--r-- | 1.4 KB |
sort.c | -rw-r--r-- | 8.9 KB |
stackdepot.c | -rw-r--r-- | 13.6 KB |
stackinit_kunit.c | -rw-r--r-- | 13.9 KB |
stmp_device.c | -rw-r--r-- | 1.9 KB |
string.c | -rw-r--r-- | 20.8 KB |
string_helpers.c | -rw-r--r-- | 23.0 KB |
strncpy_from_user.c | -rw-r--r-- | 3.9 KB |
strnlen_user.c | -rw-r--r-- | 3.4 KB |
syscall.c | -rw-r--r-- | 2.7 KB |
test-kstrtox.c | -rw-r--r-- | 17.3 KB |
test-string_helpers.c | -rw-r--r-- | 14.9 KB |
test_bitmap.c | -rw-r--r-- | 29.3 KB |
test_bitops.c | -rw-r--r-- | 2.5 KB |
test_bits.c | -rw-r--r-- | 1.8 KB |
test_blackhole_dev.c | -rw-r--r-- | 2.5 KB |
test_bpf.c | -rw-r--r-- | 356.3 KB |
test_debug_virtual.c | -rw-r--r-- | 981 bytes |
test_firmware.c | -rw-r--r-- | 36.5 KB |
test_fprobe.c | -rw-r--r-- | 4.2 KB |
test_fpu.c | -rw-r--r-- | 2.0 KB |
test_free_pages.c | -rw-r--r-- | 995 bytes |
test_hash.c | -rw-r--r-- | 6.5 KB |
test_hexdump.c | -rw-r--r-- | 6.3 KB |
test_hmm.c | -rw-r--r-- | 29.8 KB |
test_hmm_uapi.h | -rw-r--r-- | 2.4 KB |
test_ida.c | -rw-r--r-- | 4.3 KB |
test_kasan.c | -rw-r--r-- | 37.3 KB |
test_kasan_module.c | -rw-r--r-- | 3.3 KB |
test_kmod.c | -rw-r--r-- | 29.9 KB |
test_kprobes.c | -rw-r--r-- | 9.4 KB |
test_linear_ranges.c | -rw-r--r-- | 7.5 KB |
test_list_sort.c | -rw-r--r-- | 3.3 KB |
test_lockup.c | -rw-r--r-- | 16.5 KB |
test_memcat_p.c | -rw-r--r-- | 2.2 KB |
test_meminit.c | -rw-r--r-- | 9.9 KB |
test_min_heap.c | -rw-r--r-- | 4.3 KB |
test_module.c | -rw-r--r-- | 794 bytes |
test_objagg.c | -rw-r--r-- | 24.6 KB |
test_parman.c | -rw-r--r-- | 11.2 KB |
test_printf.c | -rw-r--r-- | 18.7 KB |
test_ref_tracker.c | -rw-r--r-- | 3.1 KB |
test_rhashtable.c | -rw-r--r-- | 20.0 KB |
test_scanf.c | -rw-r--r-- | 28.9 KB |
test_siphash.c | -rw-r--r-- | 7.5 KB |
test_sort.c | -rw-r--r-- | 907 bytes |
test_static_key_base.c | -rw-r--r-- | 1.6 KB |
test_static_keys.c | -rw-r--r-- | 5.6 KB |
test_string.c | -rw-r--r-- | 4.6 KB |
test_strscpy.c | -rw-r--r-- | 4.0 KB |
test_sysctl.c | -rw-r--r-- | 4.6 KB |
test_ubsan.c | -rw-r--r-- | 2.4 KB |
test_user_copy.c | -rw-r--r-- | 9.1 KB |
test_uuid.c | -rw-r--r-- | 3.4 KB |
test_vmalloc.c | -rw-r--r-- | 10.9 KB |
test_xarray.c | -rw-r--r-- | 47.2 KB |
textsearch.c | -rw-r--r-- | 9.3 KB |
timerqueue.c | -rw-r--r-- | 2.3 KB |
ts_bm.c | -rw-r--r-- | 5.1 KB |
ts_fsm.c | -rw-r--r-- | 10.4 KB |
ts_kmp.c | -rw-r--r-- | 4.1 KB |
ubsan.c | -rw-r--r-- | 9.7 KB |
ubsan.h | -rw-r--r-- | 1.8 KB |
ucmpdi2.c | -rw-r--r-- | 568 bytes |
ucs2_string.c | -rw-r--r-- | 2.5 KB |
usercopy.c | -rw-r--r-- | 2.2 KB |
uuid.c | -rw-r--r-- | 2.9 KB |
vsprintf.c | -rw-r--r-- | 86.8 KB |
win_minmax.c | -rw-r--r-- | 3.4 KB |
xarray.c | -rw-r--r-- | 58.8 KB |
xxhash.c | -rw-r--r-- | 12.7 KB |
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