[DragonFlyBSD - Bug #3356] (New) Array index error in sys/dev/raid/iir/iir.c

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #3356 has been reported by ChenHaoLu.

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Bug #3356: Array index error in sys/dev/raid/iir/iir.c
http://bugs.dragonflybsd.org/issues/3356

* Author: ChenHaoLu
* Status: New
* Priority: High
* Target version: Unverifiable
* Start date: 2023-08-28
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h3. Version

latest on branch master in the git repo [[https://github.com/DragonFlyBSD/DragonFlyBSD]]

h3. Description


Array index error may occur in @int gdt_read_event (int handle,gdt_evt_str *estr)@ in sys/dev/raid/iir/iir.c.

If handle is set as a negative integer but not -1, it will be passed to @eindex@ , which is used in @e = &ebuffer[eindex];@ at line 1931, which results in an array index error. However, handle isn't constrained by any caller of this function.

The vulnerability bears similarity to CVE-2009-3080, which means it may cause a denial of service or possibly gain privileges via a negative event index in an IOCTL request.

h3. CVE Information

CVE-2009-3080's description:[[https://nvd.nist.gov/vuln/detail/CVE-2009-3080]]
CVE-2009-3080's patch commit:[[https://github.com/torvalds/linux/commit/690e744869f3262855b83b4fb59199cf142765b0]]



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