CVE-2025-38312
published 2025-07-10CVE-2025-38312: 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…
medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
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.
Affected
36 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.147-1 (bookworm) | linux 6.1.147-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.147-1 (bookworm) | linux 6.1.147-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 9027ce4c037b566b658b8939a76326b7125e3627 | 9027ce4c037b566b658b8939a76326b7125e3627 |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 610f247f2772e4f92b63442125a1b7ade79898d8 | 610f247f2772e4f92b63442125a1b7ade79898d8 |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 2d63433e8eaa3c91b2948190e395bc67009db0d9 | 2d63433e8eaa3c91b2948190e395bc67009db0d9 |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 54947530663edcbaaee1314c01fdd8c72861b124 | 54947530663edcbaaee1314c01fdd8c72861b124 |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < ab91647acdf43b984824776559a452212eaeb21a | ab91647acdf43b984824776559a452212eaeb21a |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < b235393b9f43ff86a38ca2bde6372312ea215dc5 | b235393b9f43ff86a38ca2bde6372312ea215dc5 |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 53784073cbad18f75583fd3da9ffdfc4d1f05405 | 53784073cbad18f75583fd3da9ffdfc4d1f05405 |
| linux | linux | >= 96fe6a2109db29cd15b90a093c16e6cb4b19371a < 3f6dae09fc8c306eb70fdfef70726e1f154e173a | 3f6dae09fc8c306eb70fdfef70726e1f154e173a |
| linux | linux_kernel | >= 0 < 5.10.244-1 | 5.10.244-1 |
| linux | linux_kernel | >= 0 < 6.1.147-1 | 6.1.147-1 |
| linux | linux_kernel | >= 0 < 6.12.35-1 | 6.12.35-1 |
| linux | linux_kernel | >= 0 < 6.12.35-1 | 6.12.35-1 |
| linux | linux_kernel | >= 0 < 5.15.0-156.166 | 5.15.0-156.166 |
| linux | linux_kernel | >= 0 < 6.8.0-100.100 | 6.8.0-100.100 |
| linux | linux_kernel | >= 2.6.14 < 5.4.295 | 5.4.295 |
| linux | linux_kernel | >= 5.11 < 5.15.186 | 5.15.186 |
| linux | linux_kernel | >= 5.16 < 6.1.142 | 6.1.142 |
| linux | linux_kernel | >= 5.5 < 5.10.239 | 5.10.239 |
| linux | linux_kernel | >= 6.13 < 6.15.3 | 6.15.3 |
| linux | linux_kernel | >= 6.2 < 6.6.94 | 6.6.94 |
| linux | linux_kernel | >= 6.7 < 6.12.34 | 6.12.34 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM