Linux kernel versions 4.5 and below suffer from a double-fetch vulnerability.
31530f42aacec950a8016d24f4bdfa4b1481553d1121846081ce0cba581825e0
I found this double-fetch vulnerability when I was doing my research on double-fetch issue analysis, and Id like to make an announcement here.
This was found in Linux kernel file Linux-4.5/drivers/scsi/aacraid/commctrl.c, and crafted user space data change under race condition will lead to over-boundary access in kernel structure or local buffer, and serious consequence might be caused.
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1. Affected Versions: Linux Kernel 4.5 and earlier versions.
2. Detailed description in my report to Kernel Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=116751
3. CVE: The Common Vulnerabilities and Exposures (CVE) project has assigned the entry CVE-2016-6480 to this issue.
Even though some maintainers have confirmed this issue on the mailing list, this problem has not yet been patched since my first report three months ago. I hope this could be patched as soon as possible.
Kind regards
Pengfei Wang