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PUBLISHED

CVE-2024-26777

fbdev: sis: Error out if pixclock equals zero

Reserved:2024-02-19
Published:2024-04-03
Updated:2024-04-03

Description

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.

Product status

Default status
unaffected

1da177e4c3f4 before 84246c35ca34
affected

1da177e4c3f4 before 6db07619d173
affected

1da177e4c3f4 before cd36da760bd1
affected

1da177e4c3f4 before df6e2088c6f4
affected

1da177e4c3f4 before f329523f6a65
affected

1da177e4c3f4 before 99f1abc34a6d
affected

1da177e4c3f4 before 1d11dd3ea5d0
affected

1da177e4c3f4 before e421946be7d9
affected

Default status
affected

4.19.308
unaffected

5.4.270
unaffected

5.10.211
unaffected

5.15.150
unaffected

6.1.80
unaffected

6.6.19
unaffected

6.7.7
unaffected

6.8
unaffected

References

https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e

https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207

https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313

https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1

https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99

https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb

https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b

https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52

cve.org CVE-2024-26777

nvd.nist.gov CVE-2024-26777

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