Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2022-50101— video: fbdev: vt8623fb: Check the size of screen before memset_io()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于vt8623fb驱动未验证screen_size参数，可能导致越界写入。

CVSS 7.8 · High EPSS 0.27% · P18

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 558b7bd86c32978648cda5deb5c758d77ef0c165< 73280a184aa2e1a625ce54ce761042955cc79cd0 affected
558b7bd86c32978648cda5deb5c758d77ef0c165< 52ad9bfeb8a0e62de30de6d39e8a49a72dd78150 affected
558b7bd86c32978648cda5deb5c758d77ef0c165< d71528ccdc7ae8d7500d414091d27805c51407a2 affected
558b7bd86c32978648cda5deb5c758d77ef0c165< bd8269e57621e5b38cc0b4bd2fa02e85c9f2a441 affected
558b7bd86c32978648cda5deb5c758d77ef0c165< 4a3cef1eaced13ba9b55381d46bfad937a3dac2c affected
558b7bd86c32978648cda5deb5c758d77ef0c165< b17caec5127bba6f90af92bcc85871df54548ac0 affected
558b7bd86c32978648cda5deb5c758d77ef0c165< c7a3f41e4b133d4dd25bc996b69039b19a34d69d affected
558b7bd86c32978648cda5deb5c758d77ef0c165< ec0754c60217248fa77cc9005d66b2b55200ac06 affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2022-50101

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
video: fbdev: vt8623fb: Check the size of screen before memset_io()
Source: CVE Program / CVE List V5
Vulnerability Description
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().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于vt8623fb驱动未验证screen_size参数，可能导致越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 558b7bd86c32978648cda5deb5c758d77ef0c165 ~ 73280a184aa2e1a625ce54ce761042955cc79cd0 -
Linux Linux 2.6.22 -

II. Public POCs for CVE-2022-50101

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2022-50101

请登录查看更多情报信息。

Patches & Fixes for CVE-2022-50101 (1)

Same Patch Batch · Linux · 2025-06-18 · 362 CVEs total

CVE-2025-38075 9.8 CRITICAL scsi: target: iscsi: Fix timeout on deleted connection
CVE-2022-50098 8.8 HIGH scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts
CVE-2022-49934 8.8 HIGH wifi: mac80211: Fix UAF in ieee80211_scan_rx()
CVE-2022-50164 8.8 HIGH wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue
CVE-2022-49974 8.8 HIGH HID: nintendo: fix rumble worker null pointer deref
CVE-2025-38074 8.8 HIGH vhost-scsi: protect vq->log_used with vq->mutex
CVE-2025-38016 8.8 HIGH HID: bpf: abort dispatch if device destroyed
CVE-2025-38052 8.8 HIGH net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done
CVE-2022-49968 8.0 HIGH ieee802154/adf7242: defer destroy_workqueue call
CVE-2022-49939 7.8 HIGH binder: fix UAF of ref->proc caused by race condition
CVE-2025-38064 7.8 HIGH virtio: break and reset virtio devices on device_shutdown()
CVE-2022-50028 7.8 HIGH gadgetfs: ep_io - wait until IRQ finishes
CVE-2022-49935 7.8 HIGH dma-buf/dma-resv: check if the new fence is really later
CVE-2022-50022 7.8 HIGH drivers:md:fix a potential use-after-free bug
CVE-2025-38082 7.8 HIGH gpio: virtuser: fix potential out-of-bound write
CVE-2022-50182 7.8 HIGH media: imx-jpeg: Align upwards buffer size
CVE-2025-38058 7.8 HIGH __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock
CVE-2025-38080 7.8 HIGH drm/amd/display: Increase block_sequence array size
CVE-2025-38068 7.8 HIGH crypto: lzo - Fix compression buffer overrun
CVE-2022-50035 7.8 HIGH drm/amdgpu: Fix use-after-free on amdgpu_bo_list mutex

Showing top 20 of 362 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50101

No comments yet

Leave a comment