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CVE Record

CVE-2022-49835: ALSA: hda: fix potential memleak in 'add_widget_node'

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: fix potential memleak in 'add_widget_node' As 'kobject_add' may allocated memory for 'kobject->name' when return error. And in this function, if call 'kobject_add' failed didn't free kobject. So call 'kobject_put' to recycling resources.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-49835 is a Linux kernel memory leak in the ALSA HDA audio driver error path. It is not described as code execution, privilege escalation, or data theft. The available sources show a kernel fix, but provide no CVSS score or exploitation evidence.

Executive priority

Treat this as a routine kernel maintenance item unless local conditions make ALSA HDA exposure important. There is no source-supported evidence of active exploitation, but unpatched kernels should still be updated through normal vulnerability management.

Technical view

In add_widget_node, kobject_add can allocate kobject->name before returning an error. The vulnerable path did not release the kobject after that failure, causing a resource leak. The fix calls kobject_put to recycle resources.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the ALSA HDA driver path present or used. The bundle lists Linux kernel versions from 4.1 through 6.1 as affected, but distribution backport status must be checked separately.

Exploitation context

The source bundle marks KEV as false and provides no cited evidence of active exploitation or public weaponization. Based only on the provided description, the issue is a memory leak on an error path, so operational risk depends on triggerability in real deployments.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit note, or detailed attack preconditions are provided. The core defect is resource cleanup after kobject_add failure in ALSA HDA widget node handling. Validate impact against kernel configuration and distro backports.

Mitigation direction

  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Check Linux distribution advisories for backported ALSA HDA fixes.
  • Prioritize systems where local users or workloads can exercise audio hardware paths.
  • Use standard kernel update testing before production rollout.

Validation and detection

  • Inventory Linux kernel versions across servers, endpoints, and appliances.
  • Confirm whether ALSA HDA support is compiled, loaded, or required.
  • Map running kernels to vendor advisories or the referenced stable commits.
  • Review patch status for kernels listed as 4.1 through 6.1 affected.
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

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.

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CVE-2022-49835 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
LinuxLinux3256be6537751f65c76b3ecfbb4e667f87525a2f, 3256be6537751f65c76b3ecfbb4e667f87525a2f, 3256be6537751f65c76b3ecfbb4e667f87525a2f, 3256be6537751f65c76b3ecfbb4e667f87525a2f, 3256be6537751f65c76b3ecfbb4e667f87525a2f, 3256be6537751f65c76b3ecfbb4e667f87525a2f, 3256be6537751f65c76b3ecfbb4e667f87525a2f, 3256be6537751f65c76b3ecfbb4e667f87525a2funaffected
LinuxLinux4.1, 0, 4.9.334, 4.14.300, 4.19.267, 5.4.225, 5.10.155, 5.15.79, 6.0.9, 6.1affected
Weakness

CWE details

No CWE listed

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