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cve416baaa9-dc9f-4396-8d5f-8c081fb06d67CVE-2024-26777
HistoryApr 03, 2024 - 5:15 p.m.

CVE-2024-26777

2024-04-0317:15:53
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
29
linux
kernel
fbdev
vulnerability
resolved
cve-2024-26777
driver
ioctl interface
divide-by-zero error
sisfb_check_var
pixclock
drate
i740fb
commit 15cf0b8

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

12.1%

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

fbdev: sis: Error out if pixclock equals zero

The userspace program could pass any values to the driver through
ioctl() interface. If the driver doesn’t check the value of pixclock,
it may cause divide-by-zero error.

In sisfb_check_var(), var->pixclock is used as a divisor to caculate
drate before it is checked against zero. Fix this by checking it
at the beginning.

This is similar to CVE-2022-3061 in i740fb which was fixed by
commit 15cf0b8.

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

12.1%