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Groups > linux.kernel > #1736423
| From | Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header |
| Date | 2017-09-21 09:40 +0200 |
| Message-ID | <us4fv-6hO-17@gated-at.bofh.it> (permalink) |
| References | <urOu6-4lW-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Sep 20, 2017 at 04:45:08PM +0200, Andrey Konovalov wrote: > Hi! > > I've got the following crash while fuzzing the kernel with syzkaller. > > On commit ebb2c2437d8008d46796902ff390653822af6cc4 (Sep 18). > > It looks like cdc_parse_cdc_header() doesn't validate buflen before > accessing buffer[1], buffer[2] and so on. The only check present is > while (buflen > 0). Ugh, you are right, let me go work on a patch, thanks for the report...
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usb/core: slab-out-of-bounds read in cdc_parse_cdc_header Andrey Konovalov <andreyknvl@google.com> - 2017-09-20 16:50 +0200
Re: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-09-21 09:40 +0200
Re: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-09-21 10:10 +0200
Re: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header Andrey Konovalov <andreyknvl@google.com> - 2017-09-21 16:00 +0200
Re: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-09-21 16:10 +0200
Re: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header Andrey Konovalov <andreyknvl@google.com> - 2017-09-21 16:20 +0200
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