| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
io_uring: wait interruptibly for request completions on exit
WHen the ring exits, cleanup is done and the final cancelation and
waiting on completions is done by io_ring_exit_work. That function is
invoked by kworker, which doesn't take any signals. Because of that, it
doesn't really matter if we wait for completions in TASK_INTERRUPTIBLE
or TASK_UNINTERRUPTIBLE state. However, it does matter to the hung task
detection checker!
Normally we expect cancelations and completions to happen rather
quickly. Some test cases, however, will exit the ring and park the
owning task stopped (eg via SIGSTOP). If the owning task needs to run
task_work to complete requests, then io_ring_exit_work won't make any
progress until the task is runnable again. Hence io_ring_exit_work can
trigger the hung task detection, which is particularly problematic if
panic-on-hung-task is enabled.
As the ring exit doesn't take signals to begin with, have it wait
interruptibly rather than uninterruptibly. io_uring has a separate
stuck-exit warning that triggers independently anyway, so we're not
really missing anything by making this switch. |
| In the Linux kernel, the following vulnerability has been resolved:
tracing/synthetic: Fix races on freeing last_cmd
Currently, the "last_cmd" variable can be accessed by multiple processes
asynchronously when multiple users manipulate synthetic_events node
at the same time, it could lead to use-after-free or double-free.
This patch add "lastcmd_mutex" to prevent "last_cmd" from being accessed
asynchronously.
================================================================
It's easy to reproduce in the KASAN environment by running the two
scripts below in different shells.
script 1:
while :
do
echo -n -e '\x88' > /sys/kernel/tracing/synthetic_events
done
script 2:
while :
do
echo -n -e '\xb0' > /sys/kernel/tracing/synthetic_events
done
================================================================
double-free scenario:
process A process B
------------------- ---------------
1.kstrdup last_cmd
2.free last_cmd
3.free last_cmd(double-free)
================================================================
use-after-free scenario:
process A process B
------------------- ---------------
1.kstrdup last_cmd
2.free last_cmd
3.tracing_log_err(use-after-free)
================================================================
Appendix 1. KASAN report double-free:
BUG: KASAN: double-free in kfree+0xdc/0x1d4
Free of addr ***** by task sh/4879
Call trace:
...
kfree+0xdc/0x1d4
create_or_delete_synth_event+0x60/0x1e8
trace_parse_run_command+0x2bc/0x4b8
synth_events_write+0x20/0x30
vfs_write+0x200/0x830
...
Allocated by task 4879:
...
kstrdup+0x5c/0x98
create_or_delete_synth_event+0x6c/0x1e8
trace_parse_run_command+0x2bc/0x4b8
synth_events_write+0x20/0x30
vfs_write+0x200/0x830
...
Freed by task 5464:
...
kfree+0xdc/0x1d4
create_or_delete_synth_event+0x60/0x1e8
trace_parse_run_command+0x2bc/0x4b8
synth_events_write+0x20/0x30
vfs_write+0x200/0x830
...
================================================================
Appendix 2. KASAN report use-after-free:
BUG: KASAN: use-after-free in strlen+0x5c/0x7c
Read of size 1 at addr ***** by task sh/5483
sh: CPU: 7 PID: 5483 Comm: sh
...
__asan_report_load1_noabort+0x34/0x44
strlen+0x5c/0x7c
tracing_log_err+0x60/0x444
create_or_delete_synth_event+0xc4/0x204
trace_parse_run_command+0x2bc/0x4b8
synth_events_write+0x20/0x30
vfs_write+0x200/0x830
...
Allocated by task 5483:
...
kstrdup+0x5c/0x98
create_or_delete_synth_event+0x80/0x204
trace_parse_run_command+0x2bc/0x4b8
synth_events_write+0x20/0x30
vfs_write+0x200/0x830
...
Freed by task 5480:
...
kfree+0xdc/0x1d4
create_or_delete_synth_event+0x74/0x204
trace_parse_run_command+0x2bc/0x4b8
synth_events_write+0x20/0x30
vfs_write+0x200/0x830
... |
| In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Enhance the attribute size check
This combines the overflow and boundary check so that all attribute size
will be properly examined while enumerating them.
[ 169.181521] BUG: KASAN: slab-out-of-bounds in run_unpack+0x2e3/0x570
[ 169.183161] Read of size 1 at addr ffff8880094b6240 by task mount/247
[ 169.184046]
[ 169.184925] CPU: 0 PID: 247 Comm: mount Not tainted 6.0.0-rc7+ #3
[ 169.185908] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 169.187066] Call Trace:
[ 169.187492] <TASK>
[ 169.188049] dump_stack_lvl+0x49/0x63
[ 169.188495] print_report.cold+0xf5/0x689
[ 169.188964] ? run_unpack+0x2e3/0x570
[ 169.189331] kasan_report+0xa7/0x130
[ 169.189714] ? run_unpack+0x2e3/0x570
[ 169.190079] __asan_load1+0x51/0x60
[ 169.190634] run_unpack+0x2e3/0x570
[ 169.191290] ? run_pack+0x840/0x840
[ 169.191569] ? run_lookup_entry+0xb3/0x1f0
[ 169.192443] ? mi_enum_attr+0x20a/0x230
[ 169.192886] run_unpack_ex+0xad/0x3e0
[ 169.193276] ? run_unpack+0x570/0x570
[ 169.193557] ? ni_load_mi+0x80/0x80
[ 169.193889] ? debug_smp_processor_id+0x17/0x20
[ 169.194236] ? mi_init+0x4a/0x70
[ 169.194496] attr_load_runs_vcn+0x166/0x1c0
[ 169.194851] ? attr_data_write_resident+0x250/0x250
[ 169.195188] mi_read+0x133/0x2c0
[ 169.195481] ntfs_iget5+0x277/0x1780
[ 169.196017] ? call_rcu+0x1c7/0x330
[ 169.196392] ? ntfs_get_block_bmap+0x70/0x70
[ 169.196708] ? evict+0x223/0x280
[ 169.197014] ? __kmalloc+0x33/0x540
[ 169.197305] ? wnd_init+0x15b/0x1b0
[ 169.197599] ntfs_fill_super+0x1026/0x1ba0
[ 169.197994] ? put_ntfs+0x1d0/0x1d0
[ 169.198299] ? vsprintf+0x20/0x20
[ 169.198583] ? mutex_unlock+0x81/0xd0
[ 169.198930] ? set_blocksize+0x95/0x150
[ 169.199269] get_tree_bdev+0x232/0x370
[ 169.199750] ? put_ntfs+0x1d0/0x1d0
[ 169.200094] ntfs_fs_get_tree+0x15/0x20
[ 169.200431] vfs_get_tree+0x4c/0x130
[ 169.200714] path_mount+0x654/0xfe0
[ 169.201067] ? putname+0x80/0xa0
[ 169.201358] ? finish_automount+0x2e0/0x2e0
[ 169.201965] ? putname+0x80/0xa0
[ 169.202445] ? kmem_cache_free+0x1c4/0x440
[ 169.203075] ? putname+0x80/0xa0
[ 169.203414] do_mount+0xd6/0xf0
[ 169.203719] ? path_mount+0xfe0/0xfe0
[ 169.203977] ? __kasan_check_write+0x14/0x20
[ 169.204382] __x64_sys_mount+0xca/0x110
[ 169.204711] do_syscall_64+0x3b/0x90
[ 169.205059] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 169.205571] RIP: 0033:0x7f67a80e948a
[ 169.206327] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008
[ 169.208296] RSP: 002b:00007ffddf020f58 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 169.209253] RAX: ffffffffffffffda RBX: 000055e2547a6060 RCX: 00007f67a80e948a
[ 169.209777] RDX: 000055e2547a6260 RSI: 000055e2547a62e0 RDI: 000055e2547aeaf0
[ 169.210342] RBP: 0000000000000000 R08: 000055e2547a6280 R09: 0000000000000020
[ 169.210843] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 000055e2547aeaf0
[ 169.211307] R13: 000055e2547a6260 R14: 0000000000000000 R15: 00000000ffffffff
[ 169.211913] </TASK>
[ 169.212304]
[ 169.212680] Allocated by task 0:
[ 169.212963] (stack is not available)
[ 169.213200]
[ 169.213472] The buggy address belongs to the object at ffff8880094b5e00
[ 169.213472] which belongs to the cache UDP of size 1152
[ 169.214095] The buggy address is located 1088 bytes inside of
[ 169.214095] 1152-byte region [ffff8880094b5e00, ffff8880094b6280)
[ 169.214639]
[ 169.215004] The buggy address belongs to the physical page:
[ 169.215766] page:000000002e324c8c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x94b4
[ 169.218412] head:000000002e324c8c order:2 compound_mapcount:0 compound_pincount:0
[ 169.219078] flags: 0xfffffc0010200(slab|head|node=0|zone=1|lastcpupid=0x1fffff)
[ 169.220272] raw: 000fffffc0010200
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev()
dev_set_name() in soundbus_add_one() allocates memory for name, it need be
freed when of_device_register() fails, call soundbus_dev_put() to give up
the reference that hold in device_initialize(), so that it can be freed in
kobject_cleanup() when the refcount hit to 0. And other resources are also
freed in i2sbus_release_dev(), so it can return 0 directly. |
| In the Linux kernel, the following vulnerability has been resolved:
HID: multitouch: Correct devm device reference for hidinput input_dev name
Reference the HID device rather than the input device for the devm
allocation of the input_dev name. Referencing the input_dev would lead to a
use-after-free when the input_dev was unregistered and subsequently fires a
uevent that depends on the name. At the point of firing the uevent, the
name would be freed by devres management.
Use devm_kasprintf to simplify the logic for allocating memory and
formatting the input_dev name string. |
| DX Unified Infrastructure Management (Nimsoft/UIM) and below contains an improper ACL handling vulnerability in the robot (controller) component. A remote attacker can execute commands, read from, or write to the target system. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu/gfx: disable gfx9 cp_ecc_error_irq only when enabling legacy gfx ras
gfx9 cp_ecc_error_irq is only enabled when legacy gfx ras is assert.
So in gfx_v9_0_hw_fini, interrupt disablement for cp_ecc_error_irq
should be executed under such condition, otherwise, an amdgpu_irq_put
calltrace will occur.
[ 7283.170322] RIP: 0010:amdgpu_irq_put+0x45/0x70 [amdgpu]
[ 7283.170964] RSP: 0018:ffff9a5fc3967d00 EFLAGS: 00010246
[ 7283.170967] RAX: ffff98d88afd3040 RBX: ffff98d89da20000 RCX: 0000000000000000
[ 7283.170969] RDX: 0000000000000000 RSI: ffff98d89da2bef8 RDI: ffff98d89da20000
[ 7283.170971] RBP: ffff98d89da20000 R08: ffff98d89da2ca18 R09: 0000000000000006
[ 7283.170973] R10: ffffd5764243c008 R11: 0000000000000000 R12: 0000000000001050
[ 7283.170975] R13: ffff98d89da38978 R14: ffffffff999ae15a R15: ffff98d880130105
[ 7283.170978] FS: 0000000000000000(0000) GS:ffff98d996f00000(0000) knlGS:0000000000000000
[ 7283.170981] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7283.170983] CR2: 00000000f7a9d178 CR3: 00000001c42ea000 CR4: 00000000003506e0
[ 7283.170986] Call Trace:
[ 7283.170988] <TASK>
[ 7283.170989] gfx_v9_0_hw_fini+0x1c/0x6d0 [amdgpu]
[ 7283.171655] amdgpu_device_ip_suspend_phase2+0x101/0x1a0 [amdgpu]
[ 7283.172245] amdgpu_device_suspend+0x103/0x180 [amdgpu]
[ 7283.172823] amdgpu_pmops_freeze+0x21/0x60 [amdgpu]
[ 7283.173412] pci_pm_freeze+0x54/0xc0
[ 7283.173419] ? __pfx_pci_pm_freeze+0x10/0x10
[ 7283.173425] dpm_run_callback+0x98/0x200
[ 7283.173430] __device_suspend+0x164/0x5f0
v2: drop gfx11 as it's fixed in a different solution by retiring cp_ecc_irq funcs(Hawking) |
| In the Linux kernel, the following vulnerability has been resolved:
mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING
vub300_enable_sdio_irq() works with mutex and need TASK_RUNNING here.
Ensure that we mark current as TASK_RUNNING for sleepable context.
[ 77.554641] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff92a72c1d>] sdio_irq_thread+0x17d/0x5b0
[ 77.554652] WARNING: CPU: 2 PID: 1983 at kernel/sched/core.c:9813 __might_sleep+0x116/0x160
[ 77.554905] CPU: 2 PID: 1983 Comm: ksdioirqd/mmc1 Tainted: G OE 6.1.0-rc5 #1
[ 77.554910] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, BIOS BECFL357.86A.0081.2020.0504.1834 05/04/2020
[ 77.554912] RIP: 0010:__might_sleep+0x116/0x160
[ 77.554920] RSP: 0018:ffff888107b7fdb8 EFLAGS: 00010282
[ 77.554923] RAX: 0000000000000000 RBX: ffff888118c1b740 RCX: 0000000000000000
[ 77.554926] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffed1020f6ffa9
[ 77.554928] RBP: ffff888107b7fde0 R08: 0000000000000001 R09: ffffed1043ea60ba
[ 77.554930] R10: ffff88821f5305cb R11: ffffed1043ea60b9 R12: ffffffff93aa3a60
[ 77.554932] R13: 000000000000011b R14: 7fffffffffffffff R15: ffffffffc0558660
[ 77.554934] FS: 0000000000000000(0000) GS:ffff88821f500000(0000) knlGS:0000000000000000
[ 77.554937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 77.554939] CR2: 00007f8a44010d68 CR3: 000000024421a003 CR4: 00000000003706e0
[ 77.554942] Call Trace:
[ 77.554944] <TASK>
[ 77.554952] mutex_lock+0x78/0xf0
[ 77.554973] vub300_enable_sdio_irq+0x103/0x3c0 [vub300]
[ 77.554981] sdio_irq_thread+0x25c/0x5b0
[ 77.555006] kthread+0x2b8/0x370
[ 77.555017] ret_from_fork+0x1f/0x30
[ 77.555023] </TASK>
[ 77.555025] ---[ end trace 0000000000000000 ]--- |
| In the Linux kernel, the following vulnerability has been resolved:
clk: tegra20: Fix refcount leak in tegra20_clock_init
of_find_matching_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak. |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Fix potential NULL pointer dereference
Klocwork tool reported 'cur_dsd' may be dereferenced. Add fix to validate
pointer before dereferencing the pointer. |
| In the Linux kernel, the following vulnerability has been resolved:
ibmvnic: Do not reset dql stats on NON_FATAL err
All ibmvnic resets, make a call to netdev_tx_reset_queue() when
re-opening the device. netdev_tx_reset_queue() resets the num_queued
and num_completed byte counters. These stats are used in Byte Queue
Limit (BQL) algorithms. The difference between these two stats tracks
the number of bytes currently sitting on the physical NIC. ibmvnic
increases the number of queued bytes though calls to
netdev_tx_sent_queue() in the drivers xmit function. When, VIOS reports
that it is done transmitting bytes, the ibmvnic device increases the
number of completed bytes through calls to netdev_tx_completed_queue().
It is important to note that the driver batches its transmit calls and
num_queued is increased every time that an skb is added to the next
batch, not necessarily when the batch is sent to VIOS for transmission.
Unlike other reset types, a NON FATAL reset will not flush the sub crq
tx buffers. Therefore, it is possible for the batched skb array to be
partially full. So if there is call to netdev_tx_reset_queue() when
re-opening the device, the value of num_queued (0) would not account
for the skb's that are currently batched. Eventually, when the batch
is sent to VIOS, the call to netdev_tx_completed_queue() would increase
num_completed to a value greater than the num_queued. This causes a
BUG_ON crash:
ibmvnic 30000002: Firmware reports error, cause: adapter problem.
Starting recovery...
ibmvnic 30000002: tx error 600
ibmvnic 30000002: tx error 600
ibmvnic 30000002: tx error 600
ibmvnic 30000002: tx error 600
------------[ cut here ]------------
kernel BUG at lib/dynamic_queue_limits.c:27!
Oops: Exception in kernel mode, sig: 5
[....]
NIP dql_completed+0x28/0x1c0
LR ibmvnic_complete_tx.isra.0+0x23c/0x420 [ibmvnic]
Call Trace:
ibmvnic_complete_tx.isra.0+0x3f8/0x420 [ibmvnic] (unreliable)
ibmvnic_interrupt_tx+0x40/0x70 [ibmvnic]
__handle_irq_event_percpu+0x98/0x270
---[ end trace ]---
Therefore, do not reset the dql stats when performing a NON_FATAL reset. |
| In the Linux kernel, the following vulnerability has been resolved:
ext4: improve error handling from ext4_dirhash()
The ext4_dirhash() will *almost* never fail, especially when the hash
tree feature was first introduced. However, with the addition of
support of encrypted, casefolded file names, that function can most
certainly fail today.
So make sure the callers of ext4_dirhash() properly check for
failures, and reflect the errors back up to their callers. |
| In the Linux kernel, the following vulnerability has been resolved:
fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev
Syzkaller reported the following issue:
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:1965:6
index -84 is out of range for type 's8[341]' (aka 'signed char[341]')
CPU: 1 PID: 4995 Comm: syz-executor146 Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:217 [inline]
__ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348
dbAllocDmapLev+0x3e5/0x430 fs/jfs/jfs_dmap.c:1965
dbAllocCtl+0x113/0x920 fs/jfs/jfs_dmap.c:1809
dbAllocAG+0x28f/0x10b0 fs/jfs/jfs_dmap.c:1350
dbAlloc+0x658/0xca0 fs/jfs/jfs_dmap.c:874
dtSplitUp fs/jfs/jfs_dtree.c:974 [inline]
dtInsert+0xda7/0x6b00 fs/jfs/jfs_dtree.c:863
jfs_create+0x7b6/0xbb0 fs/jfs/namei.c:137
lookup_open fs/namei.c:3492 [inline]
open_last_lookups fs/namei.c:3560 [inline]
path_openat+0x13df/0x3170 fs/namei.c:3788
do_filp_open+0x234/0x490 fs/namei.c:3818
do_sys_openat2+0x13f/0x500 fs/open.c:1356
do_sys_open fs/open.c:1372 [inline]
__do_sys_openat fs/open.c:1388 [inline]
__se_sys_openat fs/open.c:1383 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1383
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1f4e33f7e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc21129578 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1f4e33f7e9
RDX: 000000000000275a RSI: 0000000020000040 RDI: 00000000ffffff9c
RBP: 00007f1f4e2ff080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1f4e2ff110
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
The bug occurs when the dbAllocDmapLev()function attempts to access
dp->tree.stree[leafidx + LEAFIND] while the leafidx value is negative.
To rectify this, the patch introduces a safeguard within the
dbAllocDmapLev() function. A check has been added to verify if leafidx is
negative. If it is, the function immediately returns an I/O error, preventing
any further execution that could potentially cause harm.
Tested via syzbot. |
| In the Linux kernel, the following vulnerability has been resolved:
rpmsg: char: Avoid double destroy of default endpoint
The rpmsg_dev_remove() in rpmsg_core is the place for releasing
this default endpoint.
So need to avoid destroying the default endpoint in
rpmsg_chrdev_eptdev_destroy(), this should be the same as
rpmsg_eptdev_release(). Otherwise there will be double destroy
issue that ept->refcount report warning:
refcount_t: underflow; use-after-free.
Call trace:
refcount_warn_saturate+0xf8/0x150
virtio_rpmsg_destroy_ept+0xd4/0xec
rpmsg_dev_remove+0x60/0x70
The issue can be reproduced by stopping remoteproc before
closing the /dev/rpmsgX. |
| In the Linux kernel, the following vulnerability has been resolved:
usb: xhci: tegra: fix sleep in atomic call
When we set the dual-role port to Host mode, we observed the following
splat:
[ 167.057718] BUG: sleeping function called from invalid context at
include/linux/sched/mm.h:229
[ 167.057872] Workqueue: events tegra_xusb_usb_phy_work
[ 167.057954] Call trace:
[ 167.057962] dump_backtrace+0x0/0x210
[ 167.057996] show_stack+0x30/0x50
[ 167.058020] dump_stack_lvl+0x64/0x84
[ 167.058065] dump_stack+0x14/0x34
[ 167.058100] __might_resched+0x144/0x180
[ 167.058140] __might_sleep+0x64/0xd0
[ 167.058171] slab_pre_alloc_hook.constprop.0+0xa8/0x110
[ 167.058202] __kmalloc_track_caller+0x74/0x2b0
[ 167.058233] kvasprintf+0xa4/0x190
[ 167.058261] kasprintf+0x58/0x90
[ 167.058285] tegra_xusb_find_port_node.isra.0+0x58/0xd0
[ 167.058334] tegra_xusb_find_port+0x38/0xa0
[ 167.058380] tegra_xusb_padctl_get_usb3_companion+0x38/0xd0
[ 167.058430] tegra_xhci_id_notify+0x8c/0x1e0
[ 167.058473] notifier_call_chain+0x88/0x100
[ 167.058506] atomic_notifier_call_chain+0x44/0x70
[ 167.058537] tegra_xusb_usb_phy_work+0x60/0xd0
[ 167.058581] process_one_work+0x1dc/0x4c0
[ 167.058618] worker_thread+0x54/0x410
[ 167.058650] kthread+0x188/0x1b0
[ 167.058672] ret_from_fork+0x10/0x20
The function tegra_xusb_padctl_get_usb3_companion eventually calls
tegra_xusb_find_port and this in turn calls kasprintf which might sleep
and so cannot be called from an atomic context.
Fix this by moving the call to tegra_xusb_padctl_get_usb3_companion to
the tegra_xhci_id_work function where it is really needed. |
| In the Linux kernel, the following vulnerability has been resolved:
lib: cpu_rmap: Avoid use after free on rmap->obj array entries
When calling irq_set_affinity_notifier() with NULL at the notify
argument, it will cause freeing of the glue pointer in the
corresponding array entry but will leave the pointer in the array. A
subsequent call to free_irq_cpu_rmap() will try to free this entry again
leading to possible use after free.
Fix that by setting NULL to the array entry and checking that we have
non-zero at the array entry when iterating over the array in
free_irq_cpu_rmap().
The current code does not suffer from this since there are no cases
where irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the
notify arg) is called, followed by a call to free_irq_cpu_rmap() so we
don't hit and issue. Subsequent patches in this series excersize this
flow, hence the required fix. |
| In the Linux kernel, the following vulnerability has been resolved:
x86/MCE/AMD: Use an u64 for bank_map
Thee maximum number of MCA banks is 64 (MAX_NR_BANKS), see
a0bc32b3cacf ("x86/mce: Increase maximum number of banks to 64").
However, the bank_map which contains a bitfield of which banks to
initialize is of type unsigned int and that overflows when those bit
numbers are >= 32, leading to UBSAN complaining correctly:
UBSAN: shift-out-of-bounds in arch/x86/kernel/cpu/mce/amd.c:1365:38
shift exponent 32 is too large for 32-bit type 'int'
Change the bank_map to a u64 and use the proper BIT_ULL() macro when
modifying bits in there.
[ bp: Rewrite commit message. ] |
| In the Linux kernel, the following vulnerability has been resolved:
af_unix: Fix null-ptr-deref in unix_stream_sendpage().
Bing-Jhong Billy Jheng reported null-ptr-deref in unix_stream_sendpage()
with detailed analysis and a nice repro.
unix_stream_sendpage() tries to add data to the last skb in the peer's
recv queue without locking the queue.
If the peer's FD is passed to another socket and the socket's FD is
passed to the peer, there is a loop between them. If we close both
sockets without receiving FD, the sockets will be cleaned up by garbage
collection.
The garbage collection iterates such sockets and unlinks skb with
FD from the socket's receive queue under the queue's lock.
So, there is a race where unix_stream_sendpage() could access an skb
locklessly that is being released by garbage collection, resulting in
use-after-free.
To avoid the issue, unix_stream_sendpage() must lock the peer's recv
queue.
Note the issue does not exist in 6.5+ thanks to the recent sendpage()
refactoring.
This patch is originally written by Linus Torvalds.
BUG: unable to handle page fault for address: ffff988004dd6870
PF: supervisor read access in kernel mode
PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
PREEMPT SMP PTI
CPU: 4 PID: 297 Comm: garbage_uaf Not tainted 6.1.46 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:kmem_cache_alloc_node+0xa2/0x1e0
Code: c0 0f 84 32 01 00 00 41 83 fd ff 74 10 48 8b 00 48 c1 e8 3a 41 39 c5 0f 85 1c 01 00 00 41 8b 44 24 28 49 8b 3c 24 48 8d 4a 40 <49> 8b 1c 06 4c 89 f0 65 48 0f c7 0f 0f 94 c0 84 c0 74 a1 41 8b 44
RSP: 0018:ffffc9000079fac0 EFLAGS: 00000246
RAX: 0000000000000070 RBX: 0000000000000005 RCX: 000000000001a284
RDX: 000000000001a244 RSI: 0000000000400cc0 RDI: 000000000002eee0
RBP: 0000000000400cc0 R08: 0000000000400cc0 R09: 0000000000000003
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888003970f00
R13: 00000000ffffffff R14: ffff988004dd6800 R15: 00000000000000e8
FS: 00007f174d6f3600(0000) GS:ffff88807db00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff988004dd6870 CR3: 00000000092be000 CR4: 00000000007506e0
PKRU: 55555554
Call Trace:
<TASK>
? __die_body.cold+0x1a/0x1f
? page_fault_oops+0xa9/0x1e0
? fixup_exception+0x1d/0x310
? exc_page_fault+0xa8/0x150
? asm_exc_page_fault+0x22/0x30
? kmem_cache_alloc_node+0xa2/0x1e0
? __alloc_skb+0x16c/0x1e0
__alloc_skb+0x16c/0x1e0
alloc_skb_with_frags+0x48/0x1e0
sock_alloc_send_pskb+0x234/0x270
unix_stream_sendmsg+0x1f5/0x690
sock_sendmsg+0x5d/0x60
____sys_sendmsg+0x210/0x260
___sys_sendmsg+0x83/0xd0
? kmem_cache_alloc+0xc6/0x1c0
? avc_disable+0x20/0x20
? percpu_counter_add_batch+0x53/0xc0
? alloc_empty_file+0x5d/0xb0
? alloc_file+0x91/0x170
? alloc_file_pseudo+0x94/0x100
? __fget_light+0x9f/0x120
__sys_sendmsg+0x54/0xa0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x69/0xd3
RIP: 0033:0x7f174d639a7d
Code: 28 89 54 24 1c 48 89 74 24 10 89 7c 24 08 e8 8a c1 f4 ff 8b 54 24 1c 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 33 44 89 c7 48 89 44 24 08 e8 de c1 f4 ff 48
RSP: 002b:00007ffcb563ea50 EFLAGS: 00000293 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f174d639a7d
RDX: 0000000000000000 RSI: 00007ffcb563eab0 RDI: 0000000000000007
RBP: 00007ffcb563eb10 R08: 0000000000000000 R09: 00000000ffffffff
R10: 00000000004040a0 R11: 0000000000000293 R12: 00007ffcb563ec28
R13: 0000000000401398 R14: 0000000000403e00 R15: 00007f174d72c000
</TASK> |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw89: fix potential leak in rtw89_append_probe_req_ie()
Do `kfree_skb(new)` before `goto out` to prevent potential leak. |
| In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw88: fix memory leak in rtw_usb_probe()
drivers/net/wireless/realtek/rtw88/usb.c:876 rtw_usb_probe()
warn: 'hw' from ieee80211_alloc_hw() not released on lines: 811
Fix this by modifying return to a goto statement. |
