# CVE-2024-26778: linux: In the Linux kernel, the following vulnerability has been resolved:  fbdev: savage: Error out if pixclock equals zero...

CVE-2024-26778 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-26778, released April 3, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-26778
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 3, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.82-1 | [DEBIAN-CVE-2024-26778](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26778.md) | Apr 3, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.7.7-1 | [DEBIAN-CVE-2024-26778](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26778.md) | Apr 3, 2024 |
| Linux | linux Debian 14 | 6.7.7-1 | [DEBIAN-CVE-2024-26778](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26778.md) | Apr 3, 2024 |

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