7.8

CVE-2025-38702

fbdev: fix potential buffer overflow in do_register_framebuffer()

In the Linux kernel, the following vulnerability has been resolved:

fbdev: fix potential buffer overflow in do_register_framebuffer()

The current implementation may lead to buffer overflow when:
1.  Unregistration creates NULL gaps in registered_fb[]
2.  All array slots become occupied despite num_registered_fb < FB_MAX
3.  The registration loop exceeds array bounds

Add boundary check to prevent registered_fb[FB_MAX] access.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.12.1 < 6.1.149
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.103
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.43
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.11
Linux ≫ Linux Kernel Version >= 6.16 < 6.16.2
Linux ≫ Linux Kernel Version2.6.12 Update-
Linux ≫ Linux Kernel Version2.6.12 Updaterc2
Linux ≫ Linux Kernel Version2.6.12 Updaterc3
Linux ≫ Linux Kernel Version2.6.12 Updaterc4
Linux ≫ Linux Kernel Version2.6.12 Updaterc5
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 0.17% 0.07
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/5c3f5a25c62230b7965804ce7a2e9305c3ca3961
Patch
https://git.kernel.org/stable/c/cbe740de32bb0fb7a5213731ff5f26ea6718fca3
Patch
https://git.kernel.org/stable/c/806f85bdd3a60187c21437fc51baace11f659f35
Patch
https://git.kernel.org/stable/c/2828a433c7d7a05b6f27c8148502095101dd0b09
Patch
https://git.kernel.org/stable/c/248b2aab9b2af5ecf89d9d7955a2ff20c4b4a399
Patch
https://git.kernel.org/stable/c/523b84dc7ccea9c4d79126d6ed1cf9033cf83b05
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-032379.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html