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CVE Record

CVE-2023-53788: ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set()

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set() tuning_ctl_set() might have buffer overrun at (X) if it didn't break from loop by matching (A). static int tuning_ctl_set(...) { for (i = 0; i < TUNING_CTLS_COUNT; i++) (A) if (nid == ca0132_tuning_ctls[i].nid) break; snd_hda_power_up(...); (X) dspio_set_param(..., ca0132_tuning_ctls[i].mid, ...); snd_hda_power_down(...); ^ return 1; } We will get below error by cppcheck sound/pci/hda/patch_ca0132.c:4229:2: note: After for loop, i has value 12 for (i = 0; i < TUNING_CTLS_COUNT; i++) ^ sound/pci/hda/patch_ca0132.c:4234:43: note: Array index out of bounds dspio_set_param(codec, ca0132_tuning_ctls[i].mid, 0x20, ^ This patch cares non match case.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel ALSA sound-driver bug. If a control lookup does not match, the code can read past the tuning-control array and pass invalid data onward. Public sources do not provide CVSS, impact detail, or exploitation evidence, so business urgency should be driven by kernel exposure and normal patch cadence.

Executive priority

Track and patch through normal kernel vulnerability management unless local exposure confirms affected kernels in production. Escalate only if vendor advisories raise severity or exploitation evidence appears.

Technical view

In sound/pci/hda/patch_ca0132.c, tuning_ctl_set() iterates over TUNING_CTLS_COUNT looking for a matching nid. When no match occurs, i can equal the count and ca0132_tuning_ctls[i].mid is accessed out of bounds before dspio_set_param(). Stable kernel commits add handling for the non-match case.

Likely exposure

Potentially exposed systems are Linux hosts running the affected kernel versions listed in the CVE record, especially where the ALSA HDA ca0132 driver path is available. The bundle lists fixes across multiple stable branches but does not identify specific distributions or configurations.

Exploitation context

The bundle marks KEV false and provides no public exploit status. The evidence describes a cppcheck-detected out-of-bounds array access, not a demonstrated attack path. Treat active exploitation as unconfirmed.

Researcher notes

Evidence is limited to the CVE text and kernel stable commits. No CVSS, CWE, distribution advisory, crash proof, privilege boundary, or exploitability analysis is provided in the bundle. Validate by code version and backport status rather than relying only on upstream version numbers.

Mitigation direction

  • Apply vendor-supported Linux kernel updates that include the referenced stable commits.
  • Prioritize systems matching affected kernel versions and using the ALSA HDA ca0132 driver path.
  • If patch timing is uncertain, follow Linux distribution or kernel vendor guidance.
  • Avoid relying on CVSS prioritization because no score is provided in the bundle.

Validation and detection

  • Inventory deployed kernel versions against the CVE affected version list.
  • Check whether deployed kernels include one of the referenced stable fixes.
  • Review host hardware or module usage for the ALSA HDA ca0132 driver path.
  • Monitor vendor advisories for distribution-specific backports or package names.
Prepared
Confidence
medium
Sources
10

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-2023-53788 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
3Timeline events
0ADP providers
9Source links

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
LinuxLinux44f0c9782cc6ab71ea947f8f710a46f2078a151c, 44f0c9782cc6ab71ea947f8f710a46f2078a151c, 44f0c9782cc6ab71ea947f8f710a46f2078a151c, 44f0c9782cc6ab71ea947f8f710a46f2078a151c, 44f0c9782cc6ab71ea947f8f710a46f2078a151c, 44f0c9782cc6ab71ea947f8f710a46f2078a151c, 44f0c9782cc6ab71ea947f8f710a46f2078a151c, 44f0c9782cc6ab71ea947f8f710a46f2078a151cunaffected
LinuxLinux3.9, 0, 4.14.312, 4.19.280, 5.4.240, 5.10.177, 5.15.106, 6.1.23, 6.2.10, 6.3affected
Weakness

CWE details

No CWE listed

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