Bug 2215758 (CVE-2023-33250) - CVE-2023-33250 kernel: use-after-free in iopt_unmap_iova_range() in Linux kernel
Summary: CVE-2023-33250 kernel: use-after-free in iopt_unmap_iova_range() in Linux kernel
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2023-33250
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2215759
Blocks: 2203406
TreeView+ depends on / blocked
 
Reported: 2023-06-18 13:34 UTC by Alex
Modified: 2023-09-25 16:42 UTC (History)
45 users (show)

Fixed In Version:
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Doc Text:
A use-after-free flaw was found in the Linux kernel’s IOMMU subsystem. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Clone Of:
Environment:
Last Closed: 2023-06-18 23:26:10 UTC
Embargoed:

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Description Alex 2023-06-18 13:34:24 UTC 
A flaw in the Linux Kernel found. It can lead to use-after-free bug in iopt_unmap_iova_range() in io_pagetable.c in Linux kernel through v6.4-rc1, which allows an attacker to trigger Denial of Service.

Reference:
https://groups.google.com/g/syzkaller/c/G6P9yecsTZ8/m/iiqFVOM9BwAJ
Comment 1 Alex 2023-06-18 13:34:53 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2215759]
Comment 3 Product Security DevOps Team 2023-06-18 23:26:06 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2023-33250
Comment 4 Justin M. Forbes 2023-09-25 16:42:45 UTC 
This was fixed for Fedora with the 6.4.4 stable kernel updates.
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