In fbcon_set_font() of fbcon.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-33655US | medium6.7 | — | ||
When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds. | ||||
02
references
External citations — patches, advisories, analysis.
- https://android.googlesource.com/kernel/common/+/52833e8fafb2ada5329f89b4e03a838ace0644bdFIX
- https://android.googlesource.com/kernel/common/+/b54f2a0d7bc35bec294c796e5b779a2c960b1145FIX
- https://android.googlesource.com/kernel/common/+/e8a2596dec19b4ed1d9a3b3a0dcc428b0468074aFIX
- https://source.android.com/security/bulletin/2023-03-01ADVISORY
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