CVE-2022-50412 Details
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.
A use-after-free vulnerability has been identified in the Linux kernel's HDMI CEC (Consumer Electronics Control) adapter management within the ADV7511 bridge driver. This issue arises when the CEC adapter is unregistered without properly handling the associated I2C device, leading to a kernel oops error. The vulnerability is present in the Linux kernel stable tree.
The vulnerability has been addressed in subsequent commits by modifying the ADV7511 bridge driver's unregistration process. Users should apply the latest patches available in the Linux kernel stable tree to mitigate this issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3747465c5da7a11957a34bbb9485d9fc253b91cc | kernel.org | Patch |
| https://git.kernel.org/stable/c/40cdb02cb9f965732eb543d47f15bef8d10f0f5f | kernel.org | Patch |
| https://git.kernel.org/stable/c/4d4d5bc659206b187263190ad9a03513f625659d | kernel.org | Patch |
| https://git.kernel.org/stable/c/86ae5170786aea3e1751123ca55700fb9b37b623 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f369fb4deed7ab997cfa703dc85ec08b3adc1af8 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.15, < 5.10.234 >= 5.11, < 5.15.75 >= 5.16, < 5.19.17 >= 6.0, < 6.0.3 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 14, 2026 | CVE Modified | CISA-ADP |
| Dec 12, 2025 | Initial Analysis | [email protected] |
| Sep 18, 2025 | New CVE Received | kernel.org |