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CVE Record

CVE-2023-53465: soundwire: qcom: fix storing port config out-of-bounds

In the Linux kernel, the following vulnerability has been resolved: soundwire: qcom: fix storing port config out-of-bounds The 'qcom_swrm_ctrl->pconfig' has size of QCOM_SDW_MAX_PORTS (14), however we index it starting from 1, not 0, to match real port numbers. This can lead to writing port config past 'pconfig' bounds and overwriting next member of 'qcom_swrm_ctrl' struct. Reported also by smatch: drivers/soundwire/qcom.c:1269 qcom_swrm_get_port_config() error: buffer overflow 'ctrl->pconfig' 14 <= 14

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A bounds error in the Linux Qualcomm SoundWire driver can overwrite adjacent kernel-driver data when port configuration is stored. Because successful abuse could affect confidentiality, integrity, and availability, it is rated high severity. Exposure depends on whether a system uses the affected Qualcomm SoundWire driver and an unfixed kernel.

Executive priority

Treat this as a high-priority kernel maintenance issue for Qualcomm-based Linux devices, especially shared or locally accessible systems. First establish driver use, then deploy a supported fixed kernel. Broad emergency action is not supported because no active exploitation evidence is provided and exposure appears hardware and driver dependent.

Technical view

The driver stores real port numbers beginning at index 1 in a 14-element pconfig array. Port 14 therefore writes beyond the array and into the next qcom_swrm_ctrl structure member. CVSS 3.1 is 7.8: local access, low complexity, low privileges, no user interaction, and potentially high system impact.

Likely exposure

Likely exposure is limited to Linux systems running affected kernel revisions with the Qualcomm SoundWire driver and relevant hardware or configuration. The supplied version data is ambiguous, so kernel provenance and backported fixes must be verified rather than relying only on version numbers.

Exploitation context

The source bundle does not identify public exploitation, exploit code, or active attacks, and the CVE is not listed as KEV. The CVSS vector indicates that exploitation would require local, low-privileged access. Whether the vulnerable path is practically reachable is not established by the supplied evidence.

Researcher notes

This is a one-based indexing mismatch: pconfig has 14 elements, but indexing follows port numbers starting at 1, allowing index 14 beyond valid indices 0–13. The reported consequence is corruption of the following qcom_swrm_ctrl member. No CWE, affected-range semantics, crash evidence, or demonstrated exploitation is supplied.

Mitigation direction

  • Install a vendor-supported kernel containing the applicable cited stable fix.
  • Check distribution advisories for backported fixes before judging exposure by version number.
  • Prioritize systems using Qualcomm SoundWire hardware or loading the qcom SoundWire driver.
  • Where patching is delayed, restrict unnecessary local accounts and privileged workload access.

Validation and detection

  • Record the running kernel version, package release, and distribution build identifier.
  • Determine whether the Qualcomm SoundWire driver is built, loaded, or used by present hardware.
  • Verify that the kernel source or vendor package includes an applicable cited fix commit.
  • Reassess exposure after kernel upgrades and confirm systems booted into the corrected kernel.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2023-53465 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2023-53465Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux9916c02ccd74e672b62dd1a9017ac2f237ebf512, 9916c02ccd74e672b62dd1a9017ac2f237ebf512, 9916c02ccd74e672b62dd1a9017ac2f237ebf512, 9916c02ccd74e672b62dd1a9017ac2f237ebf512unaffected
LinuxLinux5.13, 0, 5.15.121, 6.1.40, 6.4.5, 6.5affected
Weakness

CWE details

No CWE listed

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