CVE-2023-54299
In the Linux kernel, the following vulnerability has been resolved: usb: typec: bus: verify partner exists in typec_altmode_attention Some usb hubs will negotiate DisplayPort Alt mode with the device but will then negotiate a data role swap after entering the alt mode. The data role swap causes the device to unregister all alt modes, however the usb hub will still send Attention messages even after failing to reregister the Alt Mode. type_altmode_attention currently does not verify whether or not a device's altmode partner exists, which results in a NULL pointer error when dereferencing the typec_altmode and typec_altmode_ops belonging to the altmode partner. Verify the presence of a device's altmode partner before sending the Attention message to the Alt Mode driver.
Affected versions
Linux kernel versions
4.19
and later are affected. Fixed in
5.4.257,
5.10.195,
5.15.132,
6.1.53,
6.4.16,
6.5.3,
6.6
and their respective stable series.
References
The following references provide additional information about CVE-2023-54299 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/0ad6bad31da692f8d7acacab07eabe7586239ae0
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PatchKernel patch commithttps://git.kernel.org/stable/c/0d3b5fe47938e9c451466845304a2bd74e967a80
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PatchKernel patch commithttps://git.kernel.org/stable/c/1101867a1711c27d8bbe0e83136bec47f8c1ca2a
Frequently asked questions
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What is CVE-2023-54299?
CVE-2023-54299 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.19 onward and has been patched in 5.4.257, 5.10.195, 5.15.132 and others. CVE-2023-54299 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-54299?
Yes — CVE-2023-54299 has been patched. Fixed versions include 5.4.257, 5.10.195, 5.15.132 and others. If you are running Linux kernel 4.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54299 actively exploited?
No — CVE-2023-54299 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.