CVE-2022-39842
CVSS V2 None
CVSS V3 Medium 6.1
Description
** DISPUTED ** An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.
Overview
- CVE ID
- CVE-2022-39842
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2022-09-05T07:15:08
- Last Modified Date
- 2023-03-01T16:31:15
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 1 | OR | 5.19 | |
| cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.1
- Base Severity
- MEDIUM
- Exploitability Score
- 1.8
- Impact Score
- 4.2
References
| Reference URL | Reference Tags |
|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 | Release Notes Vendor Advisory |
| https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html | Mailing List Third Party Advisory |
| https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ | |
| https://www.debian.org/security/2022/dsa-5257 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2022-39842 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-39842 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-09-05 08:00:29 | Added to TrackCVE | |||
| 2022-12-19 11:14:24 | 2022-12-19T10:15:10 | CVE Modified Date | updated | |
| 2022-12-19 11:14:24 | Analyzed | Modified | Vulnerability Status | updated |
| 2022-12-19 11:14:25 | An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. | ** DISPUTED ** An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen. | Description | updated |
| 2022-12-19 11:14:26 | References | updated | ||
| 2022-12-29 11:14:44 | Modified | Undergoing Analysis | Vulnerability Status | updated |
| 2023-03-01 17:14:42 | 2023-03-01T16:31:15 | CVE Modified Date | updated | |
| 2023-03-01 17:14:42 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |