CVE-2022-50099
video: fbdev: arkfb: Check the size of screen before memset_io()
- Published
- Updated
- Reserved
- Assigned by
- Linux
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().
Timeline
ID reserved
By Linux
Published
- 14 months later
· 14 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 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)
- 0.26% · top 82% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 4a20c5510aa2c031a096a58deb356e91609781c9
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 352305ea50d682b8e081d826da53caf9e744d7d0
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 53198b81930e567ad6b879812d88052a1e8ac79e
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 09e733d6ac948e6fda4b16252e44ea46f98fc8b4
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 0701df594bc1d7ae55fed407fb65dd90a93f8a9c
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 8bcb1a06e3091716b7cbebe0e91d1de9895068cd
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 2ce61c39c2a0b8ec82f48e0f7136f0dac105ae75
- affected 681e14730c73cc2c71af282c001de6bc71c22f00 – < 96b550971c65d54d64728d8ba973487878a06454
- affected 2.6.22
- unaffected < 2.6.22
- unaffected 4.14.291 – ≤ 4.14.*
- unaffected 4.19.256 – ≤ 4.19.*
- unaffected 5.4.211 – ≤ 5.4.*
- unaffected 5.10.137 – ≤ 5.10.*
- unaffected 5.15.61 – ≤ 5.15.*
- unaffected 5.18.18 – ≤ 5.18.*
- unaffected 5.19.2 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References (8)
- https://git.kernel.org/stable/c/4a20c5510aa2c031a096a58deb356e91609781c9 (opens in a new tab)
- https://git.kernel.org/stable/c/352305ea50d682b8e081d826da53caf9e744d7d0 (opens in a new tab)
- https://git.kernel.org/stable/c/53198b81930e567ad6b879812d88052a1e8ac79e (opens in a new tab)
- https://git.kernel.org/stable/c/09e733d6ac948e6fda4b16252e44ea46f98fc8b4 (opens in a new tab)
- https://git.kernel.org/stable/c/0701df594bc1d7ae55fed407fb65dd90a93f8a9c (opens in a new tab)
- https://git.kernel.org/stable/c/8bcb1a06e3091716b7cbebe0e91d1de9895068cd (opens in a new tab)
- https://git.kernel.org/stable/c/2ce61c39c2a0b8ec82f48e0f7136f0dac105ae75 (opens in a new tab)
- https://git.kernel.org/stable/c/96b550971c65d54d64728d8ba973487878a06454 (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-2022-50099)Record last updated .