Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a10cede006f9614b465cf25609a8753efbfd45cc; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 0998a6cb232674408a03e8561dc15aa266b2f53b; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before db5c9a162d2f42bcc842b76b3d935dcc050a0eec; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c12003bf91fdff381c55ef54fef3e961a5af2545; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9ba1a7802ca9a2590cef95b253e6526f4364477f; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 901f44227072be60812fe8083e83e1533c04eed1; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before efaf89a75a29b2d179bf4fe63ca62852e93ad620; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 18c4ef4e765a798b47980555ed665d78b71aeadf |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.4.302 through 5.4.*; unaffected 5.10.247 through 5.10.*; unaffected 5.15.197 through 5.15.*; unaffected 6.1.159 through 6.1.*; unaffected 6.6.117 through 6.6.*; unaffected 6.12.58 through 6.12.*; unaffected 6.17.8 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a10cede006f9614b465cf25609a8753efbfd45cc
- https://git.kernel.org/stable/c/0998a6cb232674408a03e8561dc15aa266b2f53b
- https://git.kernel.org/stable/c/db5c9a162d2f42bcc842b76b3d935dcc050a0eec
- https://git.kernel.org/stable/c/c12003bf91fdff381c55ef54fef3e961a5af2545
- https://git.kernel.org/stable/c/9ba1a7802ca9a2590cef95b253e6526f4364477f
- https://git.kernel.org/stable/c/901f44227072be60812fe8083e83e1533c04eed1
- https://git.kernel.org/stable/c/efaf89a75a29b2d179bf4fe63ca62852e93ad620
- https://git.kernel.org/stable/c/18c4ef4e765a798b47980555ed665d78b71aeadf
ADP enrichment
No English description supplied.
No references supplied.