CVE-2022-39842

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

07 Nov 2023, 03:50

Type Values Removed Values Added
Summary ** 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.
References
  • {'url': 'https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/', 'name': 'https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/', 'tags': ['Mailing List', 'Patch', 'Vendor Advisory'], 'refsource': 'MISC'}
  • () https://lore.kernel.org/all/YylaC1wHHyLw22D3%40kadam/T/ -

01 Mar 2023, 16:31

Type Values Removed Values Added
References (MISC) https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ - (MISC) https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ - Mailing List, Patch, Vendor Advisory

19 Dec 2022, 10:15

Type Values Removed Values Added
References
  • (MISC) https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/ -
Summary 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.

21 Nov 2022, 19:45

Type Values Removed Values Added
References (MLIST) https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html - (MLIST) https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html - Mailing List, Third Party Advisory

01 Nov 2022, 23:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html -

20 Oct 2022, 13:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 7.8
v2 : unknown
v3 : 6.1
References (DEBIAN) https://www.debian.org/security/2022/dsa-5257 - (DEBIAN) https://www.debian.org/security/2022/dsa-5257 - Third Party Advisory
CPE cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

19 Oct 2022, 08:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2022/dsa-5257 -

06 Oct 2022, 12:52

Type Values Removed Values Added
CPE cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
References (MLIST) https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html - (MLIST) https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html - Mailing List, Third Party Advisory
First Time Debian debian Linux
Debian

02 Oct 2022, 19:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html -

09 Sep 2022, 03:38

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.8
CWE CWE-190
First Time Linux linux Kernel
Linux
References (MISC) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 - (MISC) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 - Release Notes, Vendor Advisory
References (MISC) https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7 - (MISC) https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7 - Patch, Third Party Advisory

05 Sep 2022, 07:15

Type Values Removed Values Added
New CVE

Information

Published : 2022-09-05 07:15

Updated : 2024-05-17 02:12


NVD link : CVE-2022-39842

Mitre link : CVE-2022-39842

CVE.ORG link : CVE-2022-39842


JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-190

Integer Overflow or Wraparound