Threats Tagged 'ghsa-3qfr-7vgq-2884'
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Threats Tagged 'ghsa-3qfr-7vgq-2884'
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In the Linux kernel, the following vulnerability has been resolved: auxdisplay: line-display: fix OOB read on zero-length message_store()… (CVE-2026-63949)CVE-2026-63949 0 A vulnerability in the Linux kernel auxdisplay line-display driver allows an out-of-bounds (OOB) read when writing zero-length messages to the message sysfs attribute. The function linedisp_display() reads msg[count - 1] without checking if count is zero, causing an OOB read at msg[-1]. This can lead to kernel memory being read incorrectly and potential kernel panic on KASAN-enabled kernels. The issue affects auxdisplay drivers registered via linedisp_register() or linedisp_attach(), including ht16k33, max6959, img-ascii-lcd, and seg-led-gpio. The vulnerability is triggered by zero-byte writes from userspace. A fix involves adding a count check before trimming the trailing newline in linedisp_display(). Join the discussion | GCVE Database | 07/19/2026, 18:31:47 UTC Added: 07/19/2026, 19:38:19 UTC |
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