Description

In the Linux kernel, the following vulnerability has been resolved:

objtool, media: dib8000: Prevent divide-by-zero in dib8000_set_dds()

If dib8000_set_dds()'s call to dib8000_read32() returns zero, the result is a divide-by-zero. Prevent that from happening.

Fixes the following warning with an UBSAN kernel:

drivers/media/dvb-frontends/dib8000.o: warning: objtool: dib8000_tune() falls through to next function dib8096p_cfg_DibRx()

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Vendor	Product	Versions
Linux	Linux	>= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < 536f7f3595ef8187cfa9ea50d7d24fcf4e84e166; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < 976a85782246a29ba0f6d411a7a4f524cb9ea987; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < 9b76b198cf209797abcb1314c18ddeb90fe0827b; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < b9249da6b0ed56269d4f21850df8e5b35dab50bd; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < 75b42dfe87657ede3da3f279bd6b1b16d69af954; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < cd80277f652138d2619f149f86ae6d17bce721d1; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < c8430e72b99936c206b37a8e2daebb3f8df7f2d8; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < 6cfe46036b163e5a0f07c6b705b518148e1a8b2f; >= 173a64cb3fcff1993b2aa8113e53fd379f6a968f, < e63d465f59011dede0a0f1d21718b59a64c3ff5c
Linux	Linux	3.10