CVE-2022-50412— drm: bridge: adv7511: unregister cec i2c device after cec adapter
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I. Basic Information for CVE-2022-50412
Vulnerability Information
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Vulnerability Title
drm: bridge: adv7511: unregister cec i2c device after cec adapter
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm: bridge: adv7511: unregister cec i2c device after cec adapter cec_unregister_adapter() assumes that the underlying adapter ops are callable. For example, if the CEC adapter currently has a valid physical address, then the unregistration procedure will invalidate the physical address by setting it to f.f.f.f. Whence the following kernel oops observed after removing the adv7511 module: Unable to handle kernel execution of user memory at virtual address 0000000000000000 Internal error: Oops: 86000004 [#1] PREEMPT_RT SMP Call trace: 0x0 adv7511_cec_adap_log_addr+0x1ac/0x1c8 [adv7511] cec_adap_unconfigure+0x44/0x90 [cec] __cec_s_phys_addr.part.0+0x68/0x230 [cec] __cec_s_phys_addr+0x40/0x50 [cec] cec_unregister_adapter+0xb4/0x118 [cec] adv7511_remove+0x60/0x90 [adv7511] i2c_device_remove+0x34/0xe0 device_release_driver_internal+0x114/0x1f0 driver_detach+0x54/0xe0 bus_remove_driver+0x60/0xd8 driver_unregister+0x34/0x60 i2c_del_driver+0x2c/0x68 adv7511_exit+0x1c/0x67c [adv7511] __arm64_sys_delete_module+0x154/0x288 invoke_syscall+0x48/0x100 el0_svc_common.constprop.0+0x48/0xe8 do_el0_svc+0x28/0x88 el0_svc+0x1c/0x50 el0t_64_sync_handler+0xa8/0xb0 el0t_64_sync+0x15c/0x160 Code: bad PC value ---[ end trace 0000000000000000 ]--- Protect against this scenario by unregistering i2c_cec after unregistering the CEC adapter. Duly disable the CEC clock afterwards too.
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，该漏洞源于未正确注销CEC I2C设备，可能导致空指针取消引用。
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-2022-50412
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Same Patch Batch · Linux · 2025-09-18 · 121 CVEs total
| CVE-2022-50402 | drivers/md/md-bitmap: check the return value of md_bitmap_get_counter() | |
| CVE-2022-50418 | wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register() | |
| CVE-2022-50417 | drm/panfrost: Fix GEM handle creation ref-counting | |
| CVE-2022-50416 | irqchip/wpcm450: Fix memory leak in wpcm450_aic_of_init() | |
| CVE-2022-50415 | parisc: led: Fix potential null-ptr-deref in start_task() | |
| CVE-2022-50414 | scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails | |
| CVE-2022-50413 | wifi: mac80211: fix use-after-free | |
| CVE-2022-50411 | ACPICA: Fix error code path in acpi_ds_call_control_method() | |
| CVE-2022-50410 | NFSD: Protect against send buffer overflow in NFSv2 READ | |
| CVE-2022-50409 | net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory | |
| CVE-2022-50407 | crypto: hisilicon/qm - increase the memory of local variables | |
| CVE-2022-50408 | wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() | |
| CVE-2022-50406 | iomap: iomap: fix memory corruption when recording errors during writeback | |
| CVE-2022-50404 | fbdev: fbcon: release buffer when fbcon_do_set_font() failed | |
| CVE-2022-50405 | net/tunnel: wait until all sk_user_data reader finish before releasing the sock | |
| CVE-2023-53409 | drivers: base: component: fix memory leak with using debugfs_lookup() | |
| CVE-2023-53412 | USB: gadget: bcm63xx_udc: fix memory leak with using debugfs_lookup() | |
| CVE-2023-53411 | PM: EM: fix memory leak with using debugfs_lookup() | |
| CVE-2023-53410 | USB: ULPI: fix memory leak with using debugfs_lookup() | |
| CVE-2023-53407 | USB: gadget: pxa27x_udc: fix memory leak with using debugfs_lookup() |
Showing top 20 of 121 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2022-50412
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