Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: cirrusfb: check pixclock to avoid divide by zero Do a sanity check on pixclock value to avoid divide by zero. If the pixclock value is zero, the cirrusfb driver will round up pixclock to get the derived frequency as close to maxclock as possible. Syzkaller reported a divide error in cirrusfb_check_pixclock. divide error: 0000 [#1] SMP KASAN PTI CPU: 0 PID: 14938 Comm: cirrusfb_test Not tainted 5.15.0-rc6 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2 RIP: 0010:cirrusfb_check_var+0x6f1/0x1260 Call Trace: fb_set_var+0x398/0xf90 do_fb_ioctl+0x4b8/0x6f0 fb_ioctl+0xeb/0x130 __x64_sys_ioctl+0x19d/0x220 do_syscall_64+0x3a/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c656d04247a2654ede5cead2ecbf83431dad5261; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1d3fb46439ad4e8f0c5739eb33d1875ac9e0f135; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 40b13e3d85744210db13457785646634e2d056bd; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 53a2088a396cfa1da92690a1da289634cd73bf0d; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8c7e2141fb89c620ab4e41512e262fbf25b8260d; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6fe23ff94e7840097202e85c148688940b37c9b1; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 45800c42ef000f417270bcfc08630e42486fca99; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e498b504f8c81b07efab9febf8503448de4dc9cf; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 5c6f402bdcf9e7239c6bc7087eda71ac99b31379 |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 4.9.311 through 4.9.*; unaffected 4.14.276 through 4.14.*; unaffected 4.19.238 through 4.19.*; unaffected 5.4.189 through 5.4.*; unaffected 5.10.110 through 5.10.*; unaffected 5.15.33 through 5.15.*; unaffected 5.16.19 through 5.16.*; unaffected 5.17.2 through 5.17.*; unaffected 5.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c656d04247a2654ede5cead2ecbf83431dad5261
- https://git.kernel.org/stable/c/1d3fb46439ad4e8f0c5739eb33d1875ac9e0f135
- https://git.kernel.org/stable/c/40b13e3d85744210db13457785646634e2d056bd
- https://git.kernel.org/stable/c/53a2088a396cfa1da92690a1da289634cd73bf0d
- https://git.kernel.org/stable/c/8c7e2141fb89c620ab4e41512e262fbf25b8260d
- https://git.kernel.org/stable/c/6fe23ff94e7840097202e85c148688940b37c9b1
- https://git.kernel.org/stable/c/45800c42ef000f417270bcfc08630e42486fca99
- https://git.kernel.org/stable/c/e498b504f8c81b07efab9febf8503448de4dc9cf
- https://git.kernel.org/stable/c/5c6f402bdcf9e7239c6bc7087eda71ac99b31379
ADP enrichment
No English description supplied.
No references supplied.