Bug 2174866 (CVE-2023-23039) - CVE-2023-23039 kernel: tty: vcc: race condition leading to use-after-free in vcc_open()
Summary: CVE-2023-23039 kernel: tty: vcc: race condition leading to use-after-free in ...
Alias: CVE-2023-23039
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 2174867
Blocks: Embargoed2172634
TreeView+ depends on / blocked
Reported: 2023-03-02 14:18 UTC by Mauro Matteo Cascella
Modified: 2023-03-15 12:35 UTC (History)
37 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A race condition leading to a use-after-free vulnerability was found in the Linux kernel's Sun Virtual Console Concentrator (VCC). This issue can result in a system crash or potential code execution if a physically proximate attacker removes a VCC device while calling open().
Clone Of:
Last Closed: 2023-03-02 14:20:31 UTC

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Description Mauro Matteo Cascella 2023-03-02 14:18:31 UTC
A race condition leading to use-after-free may occur if the user physically removes the vcc device while calling open().

Upstream patch (not yet merged upstream):

Comment 1 Mauro Matteo Cascella 2023-03-02 14:18:58 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2174867]

Comment 2 Justin M. Forbes 2023-03-14 19:00:08 UTC
This is not enabled on Fedora kernels.

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