Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before 9027ce4c037b566b658b8939a76326b7125e3627; affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before 610f247f2772e4f92b63442125a1b7ade79898d8; affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before 2d63433e8eaa3c91b2948190e395bc67009db0d9; affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before 54947530663edcbaaee1314c01fdd8c72861b124; affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before ab91647acdf43b984824776559a452212eaeb21a; affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before b235393b9f43ff86a38ca2bde6372312ea215dc5; affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before 53784073cbad18f75583fd3da9ffdfc4d1f05405; affected 96fe6a2109db29cd15b90a093c16e6cb4b19371a before 3f6dae09fc8c306eb70fdfef70726e1f154e173a |
| Linux / Linux | affected 2.6.14; unaffected 0 before 2.6.14; unaffected 5.4.295 through 5.4.*; unaffected 5.10.239 through 5.10.*; unaffected 5.15.186 through 5.15.*; unaffected 6.1.142 through 6.1.*; unaffected 6.6.94 through 6.6.*; unaffected 6.12.34 through 6.12.*; unaffected 6.15.3 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9027ce4c037b566b658b8939a76326b7125e3627
- https://git.kernel.org/stable/c/610f247f2772e4f92b63442125a1b7ade79898d8
- https://git.kernel.org/stable/c/2d63433e8eaa3c91b2948190e395bc67009db0d9
- https://git.kernel.org/stable/c/54947530663edcbaaee1314c01fdd8c72861b124
- https://git.kernel.org/stable/c/ab91647acdf43b984824776559a452212eaeb21a
- https://git.kernel.org/stable/c/b235393b9f43ff86a38ca2bde6372312ea215dc5
- https://git.kernel.org/stable/c/53784073cbad18f75583fd3da9ffdfc4d1f05405
- https://git.kernel.org/stable/c/3f6dae09fc8c306eb70fdfef70726e1f154e173a
ADP enrichment
No English description supplied.
No English description supplied.