LiveActive security incident?Get immediate response
CVE Record

CVE-2024-57879: Bluetooth: iso: Always release hdev at the end of iso_listen_bis

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: iso: Always release hdev at the end of iso_listen_bis Since hci_get_route holds the device before returning, the hdev should be released with hci_dev_put at the end of iso_listen_bis even if the function returns with an error.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel Bluetooth issue involving incorrect cleanup of a held Bluetooth device object. The source describes a missing release path when an error occurs. Business impact is unclear because no CVSS, CWE, exploit details, or active exploitation evidence are provided.

Executive priority

Handle through normal kernel patch management unless your environment has broad Bluetooth-enabled Linux exposure. Escalate if a vendor rates it higher, publishes stronger impact detail, or exploitation evidence emerges.

Technical view

In the Bluetooth ISO code path, iso_listen_bis calls hci_get_route, which holds hdev before returning. The fix ensures hci_dev_put is called at the end of iso_listen_bis, including error returns. The likely class is resource or reference leak, but the source does not assign CWE or impact.

Likely exposure

Exposure appears limited to Linux kernels containing the affected Bluetooth ISO code. The bundle lists Linux as affected and references stable kernel fixes, but distro backport status and exact deployed package exposure must be verified with each vendor.

Exploitation context

The bundle does not show CISA KEV listing, public exploitation, exploit availability, or weaponized details. Treat this as a kernel maintenance vulnerability until vendor advisories or telemetry indicate higher urgency.

Researcher notes

The public record is sparse. The core evidence is the upstream fix description: hci_get_route increments the device reference, and iso_listen_bis must release hdev on all exits. No CVSS, CWE, crashability, privilege boundary, or exploit preconditions are provided.

Mitigation direction

  • Update Linux kernels to builds that include the referenced stable fixes.
  • Check distribution vendor guidance for package availability and backports.
  • Prioritize review of systems where Bluetooth kernel support is enabled.
  • Track remediation by vendor package status, not only upstream version numbers.

Validation and detection

  • Compare fleet kernel versions against vendor advisories for CVE-2024-57879.
  • Confirm patched kernels include the referenced stable fix or documented backport.
  • Review Linux assets for Bluetooth support and relevant kernel versions.
  • After updating, verify hosts are running the remediated kernel.
Prepared
Confidence
medium
Sources
4

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.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2024-57879 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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
3Source 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
LinuxLinux02171da6e86a73e1b343b36722f5d9d5c04b3539, 02171da6e86a73e1b343b36722f5d9d5c04b3539, a6c3af0a620082d191dabc69c4925b3e6c26dd48, 6.8.12unaffected
LinuxLinux6.9, 0, 6.12.6, 6.13affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.