Bug 2363502 (CVE-2022-49848) - CVE-2022-49848 kernel: phy: qcom-qmp-combo: fix NULL-deref on runtime resume
Summary: CVE-2022-49848 kernel: phy: qcom-qmp-combo: fix NULL-deref on runtime resume
Keywords:
Status: NEW
Alias: CVE-2022-49848
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-05-01 15:07 UTC by OSIDB Bzimport
Modified: 2025-06-17 10:17 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2025-05-01 15:07:15 UTC
In the Linux kernel, the following vulnerability has been resolved:

phy: qcom-qmp-combo: fix NULL-deref on runtime resume

Commit fc64623637da ("phy: qcom-qmp-combo,usb: add support for separate
PCS_USB region") started treating the PCS_USB registers as potentially
separate from the PCS registers but used the wrong base when no PCS_USB
offset has been provided.

Fix the PCS_USB base used at runtime resume to prevent dereferencing a
NULL pointer on platforms that do not provide a PCS_USB offset (e.g.
SC7180).

Comment 1 Avinash Hanwate 2025-05-02 04:33:21 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050143-CVE-2022-49848-0e49@gregkh/T


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