fbdev: savage: Error out if pixclock equals zero (Linux Linux)

CVE-2024-26778
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.25 % · percentile 17 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

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.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 224453de8505aede1890f007be973925a3edf6a1 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 84dce0f6a4cc5b7bfd7242ef9290db8ac1dd77ff ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 512ee6d6041e007ef5bf200c6e388e172a2c5b24 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8c54acf33e5adaad6374bf3ec1e3aff0591cc8e1 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 070398d32c5f3ab0e890374904ad94551c76aec4 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < bc3c2e58d73b28b9a8789fca84778ee165a72d13
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 4.19.308 ≤ 4.19.* ; unaffected 5.4.270 ≤ 5.4.* ; unaffected 5.10.211 ≤ 5.10.* ; unaffected 5.15.150 ≤ 5.15.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD