6.1

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 5.19
Linux ≫ Linux Kernel Version5.19 Updaterc1
Linux ≫ Linux Kernel Version5.19 Updaterc2
Linux ≫ Linux Kernel Version5.19 Updaterc3
Debian ≫ Debian Linux Version10.0
Debian ≫ Debian Linux Version10.0
Debian ≫ Debian Linux Version11.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.57% 0.424
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.1 1.8 4.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
Third Party Advisory
Mailing List
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
Third Party Advisory
Mailing List
https://www.debian.org/security/2022/dsa-5257
Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
Vendor Advisory
Release Notes
https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7
Patch
Third Party Advisory
https://lore.kernel.org/all/YylaC1wHHyLw22D3%40kadam/T/