CVE-2022-50412
drm: bridge: adv7511: unregister cec i2c device after cec adapter
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
- CWE-noinfo Not enough information
Affected products
- affected 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 – < 3747465c5da7a11957a34bbb9485d9fc253b91cc
- affected 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 – < f369fb4deed7ab997cfa703dc85ec08b3adc1af8
- affected 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 – < 4d4d5bc659206b187263190ad9a03513f625659d
- affected 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 – < 86ae5170786aea3e1751123ca55700fb9b37b623
- affected 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 – < 40cdb02cb9f965732eb543d47f15bef8d10f0f5f
- affected 4.15
- unaffected < 4.15
- unaffected 5.10.234 – ≤ 5.10.*
- unaffected 5.15.75 – ≤ 5.15.*
- unaffected 5.19.17 – ≤ 5.19.*
- unaffected 6.0.3 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References (5)
- https://git.kernel.org/stable/c/3747465c5da7a11957a34bbb9485d9fc253b91cc (opens in a new tab)
- https://git.kernel.org/stable/c/f369fb4deed7ab997cfa703dc85ec08b3adc1af8 (opens in a new tab)
- https://git.kernel.org/stable/c/4d4d5bc659206b187263190ad9a03513f625659d (opens in a new tab)
- https://git.kernel.org/stable/c/86ae5170786aea3e1751123ca55700fb9b37b623 (opens in a new tab)
- https://git.kernel.org/stable/c/40cdb02cb9f965732eb543d47f15bef8d10f0f5f (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-50412)Record last updated .