CVE-2022-50101
highpriority · track · 31EPSS 0.003 · 19 %ileDEEURUUSEPSS · scored 2026-10-27
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: vt8623fb: Check the size of screen before memset_io() In the function vt8623fb_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause the following bug: [ 583.339036] BUG: unable to handle page fault for address: ffffc90005000000 [ 583.339049] #PF: supervisor write access in kernel mode [ 583.339052] #PF: error_code(0x0002) - not-present page [ 583.339074] RIP: 0010:memset_orig+0x33/0xb0 [ 583.339110] Call Trace: [ 583.339118] vt8623fb_set_par+0x11cd/0x21e0 [ 583.339146] fb_set_var+0x604/0xeb0 [ 583.339181] do_fb_ioctl+0x234/0x670 [ 583.339209] fb_ioctl+0xdd/0x130 Fix the this by checking the value of 'screen_size' before memset_io().
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
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affected products (55)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-1350Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2025-06-17csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.
also known as (4)
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sources
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references (26)
External citations — patches, advisories, analysis.
- https://git.kernel.org/stable/c/4a3cef1eaced13ba9b55381d46bfad937a3dac2ccnnvd
- https://git.kernel.org/stable/c/52ad9bfeb8a0e62de30de6d39e8a49a72dd78150cnnvd
- https://git.kernel.org/stable/c/73280a184aa2e1a625ce54ce761042955cc79cd0cnnvd
- https://git.kernel.org/stable/c/b17caec5127bba6f90af92bcc85871df54548ac0cnnvd
- https://git.kernel.org/stable/c/bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441cnnvd
- https://git.kernel.org/stable/c/c7a3f41e4b133d4dd25bc996b69039b19a34d69dcnnvd
- https://git.kernel.org/stable/c/d71528ccdc7ae8d7500d414091d27805c51407a2cnnvd
- https://git.kernel.org/stable/c/ec0754c60217248fa77cc9005d66b2b55200ac06cnnvd
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