Debian Security Bug TrackerDEBIANCVE:CVE-2022-39842CVE-2022-39842
6.1 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
6.3 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.2%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | linux | < 5.19.6-1 | linux_5.19.6-1_all.deb |
| Debian | 11 | all | linux | < 5.10.149-1 | linux_5.10.149-1_all.deb |
| Debian | 10 | all | linux | < 4.19.260-1 | linux_4.19.260-1_all.deb |
| Debian | 999 | all | linux | < 5.19.6-1 | linux_5.19.6-1_all.deb |
| Debian | 13 | all | linux | < 5.19.6-1 | linux_5.19.6-1_all.deb |
| Debian | 10 | all | linux-5.10 | < 5.10.149-2~deb10u1 | linux-5.10_5.10.149-2~deb10u1_all.deb |
Related
6.1 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
6.3 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.2%