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PUBLISHED

CVE-2024-26778

fbdev: savage: 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: savage: 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. Although pixclock is checked in savagefb_decode_var(), but it is not checked properly in savagefb_probe(). Fix this by checking whether pixclock is zero in the function savagefb_check_var() before info->var.pixclock is used as the divisor. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8.

Product status

Default status
unaffected

1da177e4c3f4 before 224453de8505
affected

1da177e4c3f4 before 84dce0f6a4cc
affected

1da177e4c3f4 before 512ee6d6041e
affected

1da177e4c3f4 before 8c54acf33e5a
affected

1da177e4c3f4 before 070398d32c5f
affected

1da177e4c3f4 before bc3c2e58d73b
affected

1da177e4c3f4 before a9ca4e80d234
affected

1da177e4c3f4 before 04e5eac8f3ab
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/224453de8505aede1890f007be973925a3edf6a1

https://git.kernel.org/stable/c/84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff

https://git.kernel.org/stable/c/512ee6d6041e007ef5bf200c6e388e172a2c5b24

https://git.kernel.org/stable/c/8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1

https://git.kernel.org/stable/c/070398d32c5f3ab0e890374904ad94551c76aec4

https://git.kernel.org/stable/c/bc3c2e58d73b28b9a8789fca84778ee165a72d13

https://git.kernel.org/stable/c/a9ca4e80d23474f90841251f4ac0d941fa337a01

https://git.kernel.org/stable/c/04e5eac8f3ab2ff52fa191c187a46d4fdbc1e288

cve.org CVE-2024-26778

nvd.nist.gov CVE-2024-26778

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