CVE - CVE-2022-50099

CVE-ID
CVE-2022-50099	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: arkfb: Check the size of screen before memset_io() In the function arkfb_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: [ 659.399066] BUG: unable to handle page fault for address: ffffc90003000000 [ 659.399077] #PF: supervisor write access in kernel mode [ 659.399079] #PF: error_code(0x0002) - not-present page [ 659.399094] RIP: 0010:memset_orig+0x33/0xb0 [ 659.399116] Call Trace: [ 659.399122] arkfb_set_par+0x143f/0x24c0 [ 659.399130] fb_set_var+0x604/0xeb0 [ 659.399161] do_fb_ioctl+0x234/0x670 [ 659.399189] fb_ioctl+0xdd/0x130 Fix the this by checking the value of 'screen_size' before memset_io().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0701df594bc1d7ae55fed407fb65dd90a93f8a9c URL:https://git.kernel.org/stable/c/0701df594bc1d7ae55fed407fb65dd90a93f8a9c MISC:https://git.kernel.org/stable/c/09e733d6ac948e6fda4b16252e44ea46f98fc8b4 URL:https://git.kernel.org/stable/c/09e733d6ac948e6fda4b16252e44ea46f98fc8b4 MISC:https://git.kernel.org/stable/c/2ce61c39c2a0b8ec82f48e0f7136f0dac105ae75 URL:https://git.kernel.org/stable/c/2ce61c39c2a0b8ec82f48e0f7136f0dac105ae75 MISC:https://git.kernel.org/stable/c/352305ea50d682b8e081d826da53caf9e744d7d0 URL:https://git.kernel.org/stable/c/352305ea50d682b8e081d826da53caf9e744d7d0 MISC:https://git.kernel.org/stable/c/4a20c5510aa2c031a096a58deb356e91609781c9 URL:https://git.kernel.org/stable/c/4a20c5510aa2c031a096a58deb356e91609781c9 MISC:https://git.kernel.org/stable/c/53198b81930e567ad6b879812d88052a1e8ac79e URL:https://git.kernel.org/stable/c/53198b81930e567ad6b879812d88052a1e8ac79e MISC:https://git.kernel.org/stable/c/8bcb1a06e3091716b7cbebe0e91d1de9895068cd URL:https://git.kernel.org/stable/c/8bcb1a06e3091716b7cbebe0e91d1de9895068cd MISC:https://git.kernel.org/stable/c/96b550971c65d54d64728d8ba973487878a06454 URL:https://git.kernel.org/stable/c/96b550971c65d54d64728d8ba973487878a06454
Assigning CNA
kernel.org
Date Record Created
20250618	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250618)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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