CVE-2022-39842
Linux Kernel Heap Overflow in PXA3xx GCU Write
Description
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.
INFO
Published Date :
Sept. 5, 2022, 7:15 a.m.
Last Modified :
Aug. 3, 2024, 12:15 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.2
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-39842.
| URL | Resource |
|---|---|
| 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%40kadam/T/ | |
| https://www.debian.org/security/2022/dsa-5257 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-39842 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-39842 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Aug. 03, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 17, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 11, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 21, 2024
Action Type Old Value New Value Added Tag MITRE disputed -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed 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. 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. Added Reference MITRE https://lore.kernel.org/all/YylaC1wHHyLw22D3%40kadam/T/ [No types assigned] Removed Reference MITRE https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ -
Modified Analysis by [email protected]
Mar. 01, 2023
Action Type Old Value New Value Changed Reference Type https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ No Types Assigned https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ Mailing List, Patch, Vendor Advisory -
CVE Modified by [email protected]
Dec. 19, 2022
Action Type Old Value New Value Changed Description 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. Added Reference https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ [No Types Assigned] -
Modified Analysis by [email protected]
Nov. 21, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 01, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 20, 2022
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H Changed Reference Type https://www.debian.org/security/2022/dsa-5257 No Types Assigned https://www.debian.org/security/2022/dsa-5257 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 19, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5257 [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 06, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 02, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html [No Types Assigned] -
Initial Analysis by [email protected]
Sep. 09, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 Release Notes, Vendor Advisory Changed Reference Type https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7 No Types Assigned https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7 Patch, Third Party Advisory Added CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.19 *cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-39842 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-39842
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.01%
score
0.16173
percentile