CVE-2025-38312None▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 9027ce4c037b566b658b8939a76326b7125e3627Linux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 610f247f2772e4f92b63442125a1b7ade79898d8Linux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 2d63433e8eaa3c91b2948190e395bc67009db0d9Linux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 54947530663edcbaaee1314c01fdd8c72861b124Linux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < ab91647acdf43b984824776559a452212eaeb21aLinux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < b235393b9f43ff86a38ca2bde6372312ea215dc5Linux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 53784073cbad18f75583fd3da9ffdfc4d1f05405Linux >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 3f6dae09fc8c306eb70fdfef70726e1f154e173aLinux 2.6.14Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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