Security readout for executives and security teams
Plain-English summary
A Linux ALSA 6fire USB-audio driver cleanup error can release resources while the sound card object remains in use, creating a use-after-free condition. A locally authenticated user could potentially cause serious loss of confidentiality, integrity, or availability. Exposure is limited to systems using the affected driver and kernel code.
Executive priority
Treat as a high-priority endpoint remediation where the 6fire driver and untrusted local users coexist. Broader server urgency is lower when the driver is absent. Request rapid inventory and normal emergency kernel patching, but do not characterize this as active exploitation based on the supplied evidence.
Technical view
The USB disconnect callback destroyed 6fire resources immediately after aborting the device, although snd_card_free_when_closed() could leave the card object active. The fix defers resource destruction to the card object's private_free callback, aligning cleanup with its lifetime and preventing potential CWE-416 use-after-free conditions.
Likely exposure
Prioritize Linux systems with the ALSA 6fire driver present or active, particularly endpoints allowing low-privileged local access. The supplied CVSS vector is local, low-complexity, low-privilege, and requires no user interaction. Exact exposure requires distributor-specific kernel and backport verification because the supplied version data is duplicated and ambiguous.
Exploitation context
The bundle provides no KEV listing or other evidence of active exploitation. The issue is locally reachable rather than remotely exploitable according to CVSS. Successful impact depends on affected 6fire driver lifecycle behavior during USB disconnection; public evidence supplied here does not establish practical exploit reliability.
Researcher notes
The weakness is CWE-416 caused by resource lifetime mismatch between USB disconnect cleanup and deferred sound-card release. Multiple stable-kernel commits are cited, indicating branch-specific fixes. The affected-version records contain duplicates and unclear boundaries, so researchers should use commit ancestry and distributor backport status rather than version strings alone.
Mitigation direction
- Apply a vendor-supported kernel update containing the applicable upstream stable fix.
- Check distribution advisories for package-specific fixed versions and backports.
- Restrict untrusted local access until affected systems are updated.
- Disable or avoid the 6fire driver where operationally unnecessary and vendor-supported.
Validation and detection
- Inventory kernel versions and systems loading or using the ALSA 6fire driver.
- Compare installed packages with distribution advisories and upstream stable fixes.
- Confirm the corrected cleanup occurs through the card private_free callback.
- After updating, verify the running kernel matches the remediated package.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2024-53239 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
- 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
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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/74357d0b5cd3ef544752bc9f21cbeee4902fae6cCVE reference, Linux
- https://git.kernel.org/stable/c/273eec23467dfbfbd0e4c10302579ba441fb1e13CVE reference, Linux
- https://git.kernel.org/stable/c/f2d06d4e129e2508e356136f99bb20a332ff1a00CVE reference, Linux
- https://git.kernel.org/stable/c/b889a7d68d7e76b8795b754a75c91a2d561d5e8cCVE reference, Linux
- https://git.kernel.org/stable/c/ea8cc56db659cf0ae57073e32a4735ead7bd7ee3CVE reference, Linux
- https://git.kernel.org/stable/c/b754e831a94f82f2593af806741392903f359168CVE reference, Linux
- https://git.kernel.org/stable/c/0df7f4b5cc10f5adf98be0845372e9eef7bb5b09CVE reference, Linux
- https://git.kernel.org/stable/c/57860a80f03f9dc69a34a5c37b0941ad032a0a8cCVE reference, Linux
- https://git.kernel.org/stable/c/a0810c3d6dd2d29a9b92604d682eacd2902ce947CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.htmlCVE reference, CVE
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.htmlCVE reference, CVE
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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.