-

CVE-2025-40322

fbdev: bitblit: bound-check glyph index in bit_putcs*

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

fbdev: bitblit: bound-check glyph index in bit_putcs*

bit_putcs_aligned()/unaligned() derived the glyph pointer from the
character value masked by 0xff/0x1ff, which may exceed the actual font's
glyph count and read past the end of the built-in font array.
Clamp the index to the actual glyph count before computing the address.

This fixes a global out-of-bounds read reported by syzbot.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < a10cede006f9614b465cf25609a8753efbfd45cc
Status affected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < 0998a6cb232674408a03e8561dc15aa266b2f53b
Status affected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < db5c9a162d2f42bcc842b76b3d935dcc050a0eec
Status affected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < c12003bf91fdff381c55ef54fef3e961a5af2545
Status affected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < 9ba1a7802ca9a2590cef95b253e6526f4364477f
Status affected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < 901f44227072be60812fe8083e83e1533c04eed1
Status affected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < efaf89a75a29b2d179bf4fe63ca62852e93ad620
Status affected
Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version < 18c4ef4e765a798b47980555ed665d78b71aeadf
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 2.6.12
Status affected
Version 0
Version < 2.6.12
Status unaffected
Version <= 5.4.*
Version 5.4.302
Status unaffected
Version <= 5.10.*
Version 5.10.247
Status unaffected
Version <= 5.15.*
Version 5.15.197
Status unaffected
Version <= 6.1.*
Version 6.1.159
Status unaffected
Version <= 6.6.*
Version 6.6.117
Status unaffected
Version <= 6.12.*
Version 6.12.58
Status unaffected
Version <= 6.17.*
Version 6.17.8
Status unaffected
Version <= *
Version 6.18
Status unaffected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.04% 0.129
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.