CVE-2025-38312
fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() In fb_find_mode_cvt(), iff mode->refresh somehow happens to be 0x80000000, cvt.f_refresh will become 0 when multiplying it by 2 due to overflow. It's then passed to fb_cvt_hperiod(), where it's used as a divider -- division by 0 will result in kernel oops. Add a sanity check for cvt.f_refresh to avoid such overflow... Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 10, 2025 |
| Last Updated | May 12, 2026 |
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Affected Versions
Linux / Linux
96fe6a2109db29cd15b90a093c16e6cb4b19371a < 9027ce4c037b566b658b8939a76326b7125e3627 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 610f247f2772e4f92b63442125a1b7ade79898d8 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 2d63433e8eaa3c91b2948190e395bc67009db0d9 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 54947530663edcbaaee1314c01fdd8c72861b124 96fe6a2109db29cd15b90a093c16e6cb4b19371a < ab91647acdf43b984824776559a452212eaeb21a 96fe6a2109db29cd15b90a093c16e6cb4b19371a < b235393b9f43ff86a38ca2bde6372312ea215dc5 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 53784073cbad18f75583fd3da9ffdfc4d1f05405 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 3f6dae09fc8c306eb70fdfef70726e1f154e173a
Linux / Linux
2.6.14
References
git.kernel.org: https://git.kernel.org/stable/c/9027ce4c037b566b658b8939a76326b7125e3627 git.kernel.org: https://git.kernel.org/stable/c/610f247f2772e4f92b63442125a1b7ade79898d8 git.kernel.org: https://git.kernel.org/stable/c/2d63433e8eaa3c91b2948190e395bc67009db0d9 git.kernel.org: https://git.kernel.org/stable/c/54947530663edcbaaee1314c01fdd8c72861b124 git.kernel.org: https://git.kernel.org/stable/c/ab91647acdf43b984824776559a452212eaeb21a git.kernel.org: https://git.kernel.org/stable/c/b235393b9f43ff86a38ca2bde6372312ea215dc5 git.kernel.org: https://git.kernel.org/stable/c/53784073cbad18f75583fd3da9ffdfc4d1f05405 git.kernel.org: https://git.kernel.org/stable/c/3f6dae09fc8c306eb70fdfef70726e1f154e173a lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html cert-portal.siemens.com: https://cert-portal.siemens.com/productcert/html/ssa-082556.html