Security readout for executives and security teams
Plain-English summary
This is a Linux kernel bug in Qualcomm WCD938x audio codec handling. If headset jack initialization fails, later jack configuration can dereference an error pointer and crash the kernel. Business impact appears availability-focused on systems using this audio path; the bundle provides no CVSS score, remote reachability, or active exploitation evidence.
Executive priority
Handle through normal kernel patch management, with higher priority for fleets using Qualcomm-based laptops, tablets, or embedded devices where audio driver crashes affect availability. There is no cited evidence of active exploitation or broad remote exposure.
Technical view
The ASoC wcd938x codec lacked error handling for failed MBHC initialization. Later, wcd938x_codec_set_jack can call wcd_mbhc_start with an error pointer, causing a kernel paging request. The trace references snd_soc_wcd_mbhc, snd_soc_wcd938x, qcom_snd_wcd_jack_setup, and sc8280xp_snd_init.
Likely exposure
Exposure is likely limited to Linux systems running affected kernel versions with the WCD938x Qualcomm audio codec path enabled. The source lists Linux 5.15 through 6.5-related affected version data, but exact distribution package exposure must be confirmed with vendor kernel advisories.
Exploitation context
The source bundle does not report active exploitation, and CISA KEV status is false. The described failure is a kernel crash from error-pointer dereference during audio jack setup, not a documented privilege escalation or remote attack path.
Researcher notes
Key evidence is the upstream Linux fix description and stack trace. The CVE record lacks CVSS, CWE, exploit status, and detailed affected package mapping. Do not assume exploitability beyond the documented error-pointer dereference and kernel crash condition.
Mitigation direction
- Check distribution or device vendor advisories for patched kernel packages.
- Prioritize devices using Qualcomm WCD938x audio codec support.
- Apply kernel updates that include the referenced stable fixes.
- If updates are unavailable, assess whether the affected audio codec path can be disabled.
Validation and detection
- Inventory kernel versions and hardware using the WCD938x codec driver.
- Confirm whether installed kernels contain one of the referenced stable commits.
- Review boot or kernel logs for matching WCD938x MBHC failure traces.
- Track vendor advisory status because CVSS and package mapping are absent.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2023-53666 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/5a34d252052b5da743ef82591c860fc947384d4eCVE reference, Linux
- https://git.kernel.org/stable/c/bb241ae928c694e365c30c888c9eb02dcc812dfdCVE reference, Linux
- https://git.kernel.org/stable/c/31ee704c84c4bf4df8521ef1478c161f710d0f94CVE reference, Linux
- https://git.kernel.org/stable/c/7dfae2631bfbdebecd35fe7b472ab3cc95c9ed66CVE reference, Linux
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.