Threats Tagged 'ghsa-gcm2-cr9p-5jc7'
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Threats Tagged 'ghsa-gcm2-cr9p-5jc7'
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In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bit_cursor() bit_cursor() fetches the… (CVE-2026-74635)CVE-2026-74635 0 A vulnerability in the Linux kernel's fbdev bitblit component was resolved that involved an out-of-bounds read in the bit_cursor() function. This occurred because the glyph index fetched from the screen buffer could exceed the current font's glyph count, leading to a global out-of-bounds memory access. The issue arises when the font changes from one with 512 glyphs to one with 256 glyphs, or when arbitrary values are written to the virtual console screen buffer without proper bounds checking. The fix adds proper clamping of the glyph index to prevent out-of-bounds reads without altering cursor behavior. Join the discussion | GCVE Database | 08/22/2026, 18:30:27 UTC Added: 08/22/2026, 22:51:30 UTC |
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