CVE-2022-50716— wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out
Possible ATT&CK Techniques 1AI
T1200 · Hardware AdditionsAffected Version Matrix 20
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | b7d572e1871df06a96a1c9591c71c5494ff6b624< c9ba3fbf6a488da6cad1d304c5234bd8d729eba3 | affected |
b7d572e1871df06a96a1c9591c71c5494ff6b624< 340524ae7b53a72cf5d9e7bd7790433422b3b12f | affected | ||
b7d572e1871df06a96a1c9591c71c5494ff6b624< 6447beefd21326a3f4719ec2ea511df797f6c820 | affected | ||
b7d572e1871df06a96a1c9591c71c5494ff6b624< 7360b323e0343ea099091d4ae09576dbe1f09516 | affected | ||
b7d572e1871df06a96a1c9591c71c5494ff6b624< 8af52492717e3538eba3f81d012b1476af8a89a6 | affected | ||
b7d572e1871df06a96a1c9591c71c5494ff6b624< 3eca9697c2f3905dea3ad2fc536ebaa1fbd735bd | affected | ||
b7d572e1871df06a96a1c9591c71c5494ff6b624< 601ae89375033ac4870c086e24ba03f235d38e55 | affected | ||
b7d572e1871df06a96a1c9591c71c5494ff6b624< 9aef34e1ae35a87e5f6a22278c17823b7ce64c88 | affected | ||
| … +12 more rows | |||
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I. Basic Information for CVE-2022-50716
Vulnerability Information
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Vulnerability Title
wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out syzkaller reported use-after-free with the stack trace like below [1]: [ 38.960489][ C3] ================================================================== [ 38.963216][ C3] BUG: KASAN: use-after-free in ar5523_cmd_tx_cb+0x220/0x240 [ 38.964950][ C3] Read of size 8 at addr ffff888048e03450 by task swapper/3/0 [ 38.966363][ C3] [ 38.967053][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.0.0-09039-ga6afa4199d3d-dirty #18 [ 38.968464][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014 [ 38.969959][ C3] Call Trace: [ 38.970841][ C3] <IRQ> [ 38.971663][ C3] dump_stack_lvl+0xfc/0x174 [ 38.972620][ C3] print_report.cold+0x2c3/0x752 [ 38.973626][ C3] ? ar5523_cmd_tx_cb+0x220/0x240 [ 38.974644][ C3] kasan_report+0xb1/0x1d0 [ 38.975720][ C3] ? ar5523_cmd_tx_cb+0x220/0x240 [ 38.976831][ C3] ar5523_cmd_tx_cb+0x220/0x240 [ 38.978412][ C3] __usb_hcd_giveback_urb+0x353/0x5b0 [ 38.979755][ C3] usb_hcd_giveback_urb+0x385/0x430 [ 38.981266][ C3] dummy_timer+0x140c/0x34e0 [ 38.982925][ C3] ? notifier_call_chain+0xb5/0x1e0 [ 38.984761][ C3] ? rcu_read_lock_sched_held+0xb/0x60 [ 38.986242][ C3] ? lock_release+0x51c/0x790 [ 38.987323][ C3] ? _raw_read_unlock_irqrestore+0x37/0x70 [ 38.988483][ C3] ? __wake_up_common_lock+0xde/0x130 [ 38.989621][ C3] ? reacquire_held_locks+0x4a0/0x4a0 [ 38.990777][ C3] ? lock_acquire+0x472/0x550 [ 38.991919][ C3] ? rcu_read_lock_sched_held+0xb/0x60 [ 38.993138][ C3] ? lock_acquire+0x472/0x550 [ 38.994890][ C3] ? dummy_urb_enqueue+0x860/0x860 [ 38.996266][ C3] ? do_raw_spin_unlock+0x16f/0x230 [ 38.997670][ C3] ? dummy_urb_enqueue+0x860/0x860 [ 38.999116][ C3] call_timer_fn+0x1a0/0x6a0 [ 39.000668][ C3] ? add_timer_on+0x4a0/0x4a0 [ 39.002137][ C3] ? reacquire_held_locks+0x4a0/0x4a0 [ 39.003809][ C3] ? __next_timer_interrupt+0x226/0x2a0 [ 39.005509][ C3] __run_timers.part.0+0x69a/0xac0 [ 39.007025][ C3] ? dummy_urb_enqueue+0x860/0x860 [ 39.008716][ C3] ? call_timer_fn+0x6a0/0x6a0 [ 39.010254][ C3] ? cpuacct_percpu_seq_show+0x10/0x10 [ 39.011795][ C3] ? kvm_sched_clock_read+0x14/0x40 [ 39.013277][ C3] ? sched_clock_cpu+0x69/0x2b0 [ 39.014724][ C3] run_timer_softirq+0xb6/0x1d0 [ 39.016196][ C3] __do_softirq+0x1d2/0x9be [ 39.017616][ C3] __irq_exit_rcu+0xeb/0x190 [ 39.019004][ C3] irq_exit_rcu+0x5/0x20 [ 39.020361][ C3] sysvec_apic_timer_interrupt+0x8f/0xb0 [ 39.021965][ C3] </IRQ> [ 39.023237][ C3] <TASK> In ar5523_probe(), ar5523_host_available() calls ar5523_cmd() as below (there are other functions which finally call ar5523_cmd()): ar5523_probe() -> ar5523_host_available() -> ar5523_cmd_read() -> ar5523_cmd() If ar5523_cmd() timed out, then ar5523_host_available() failed and ar5523_probe() freed the device structure. So, ar5523_cmd_tx_cb() might touch the freed structure. This patch fixes this issue by canceling in-flight tx cmd if submitted urb timed out.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于命令超时后释放后重用，可能导致任意代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-50716
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|---|
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Other References for CVE-2022-50716 (3)
Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total
| CVE-2022-50755 | udf: Avoid double brelse() in udf_rename() | |
| CVE-2022-50765 | RISC-V: kexec: Fix memory leak of elf header buffer | |
| CVE-2022-50764 | ipv6/sit: use DEV_STATS_INC() to avoid data-races | |
| CVE-2022-50763 | crypto: marvell/octeontx - prevent integer overflows | |
| CVE-2022-50762 | fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst() | |
| CVE-2022-50760 | drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios() | |
| CVE-2022-50761 | x86/xen: Fix memory leak in xen_init_lock_cpu() | |
| CVE-2022-50759 | media: i2c: ov5648: Free V4L2 fwnode data on unbind | |
| CVE-2022-50758 | staging: vt6655: fix potential memory leak | |
| CVE-2022-50756 | nvme-pci: fix mempool alloc size | |
| CVE-2022-50757 | media: camss: Clean up received buffers on failed start of streaming | |
| CVE-2022-50749 | acct: fix potential integer overflow in encode_comp_t() | |
| CVE-2022-50746 | erofs: validate the extent length for uncompressed pclusters | |
| CVE-2022-50747 | hfs: Fix OOB Write in hfs_asc2mac | |
| CVE-2022-50748 | ipc: mqueue: fix possible memory leak in init_mqueue_fs() | |
| CVE-2022-50750 | drm/panel/panel-sitronix-st7701: Remove panel on DSI attach failure | |
| CVE-2022-50752 | md/raid5: Remove unnecessary bio_put() in raid5_read_one_chunk() | |
| CVE-2022-50753 | f2fs: fix to do sanity check on summary info | |
| CVE-2022-50754 | apparmor: fix a memleak in multi_transaction_new() | |
| CVE-2022-50766 | btrfs: set generation before calling btrfs_clean_tree_block in btrfs_init_new_buffer |
Showing top 20 of 322 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected - CVE-2026-53358
Bluetooth: L2CAP: use chan timer to close channels in cleanu
Same vendor: Linux
- CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc(). - CVE-2026-53360
KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use - CVE-2026-53359
KVM: x86: Fix shadow paging use-after-free due to unexpected - CVE-2026-53358
Bluetooth: L2CAP: use chan timer to close channels in cleanu
V. Comments for CVE-2022-50716
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