SVNews r327497

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2018-01-02 18:29:44 - r327497 by emaste (Ed Maste)

Complete list of files affected by revision r327497:

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  History   Contents   Diff   MODIFY   /head/sys/dev/hpt27xx/hpt27xx_osm_bsd.c  

Commit message:

hpt27xx: plug info leak in hpt_ioctl

The hpt27xx ioctl handler allocates a buffer without M_ZERO and calls
hpt_do_ioctl(), which might not overwrite the entire buffer.

Also zero bytesReturned in case it is not written by hpt_do_ioctl().

The hpt27xx device has permissions only for root so this is not urgent,
and the fix can be MFCd and considered for a future EN.

Reported by: Ilja van Sprundel <>
Submitted by: Domagoj Stolfa <> (M_ZERO)
Reviewed by: jhb, kib
MFC after: 3 days
Security: info leak in root-only ioctl
Sponsored by: The FreeBSD Foundation


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