Security readout for executives and security teams
Plain-English summary
This is a Linux kernel flaw in the Sound Open Firmware audio path. Malformed or unexpected firmware data could bypass size checks and potentially impact confidentiality, integrity, and availability. The CVSS vector is local, so this is not described as a remote internet-facing issue.
Executive priority
Prioritize remediation through standard kernel update channels. Urgency is high where local users or untrusted workloads exist, but current sources do not support emergency internet-wide exploitation claims.
Technical view
The resolved kernel change adds lower and upper bounds checks around SOF firmware data size calculations where header and full-size arithmetic could underflow. The source maps this to CWE-120 and CVSS 8.4 with local attack vector, no privileges, and high CIA impact.
Likely exposure
Exposure is most relevant to systems running affected Linux kernel versions from the source bundle and using the ASoC/SOF firmware path. The bundle does not provide distro-specific package names or deployment prevalence.
Exploitation context
The source bundle does not show CISA KEV listing or public exploitation evidence. Treat exploitation as unconfirmed. The CVSS vector is local, with low complexity and no required privileges or user interaction.
Researcher notes
Key uncertainty is exploitability details beyond the local CVSS vector. Review the stable commits for exact affected branches and the SOF firmware parsing path, but avoid assuming exploit availability from the bounds-checking fix alone.
Mitigation direction
- Check vendor or distribution advisories for CVE-2024-26927 kernel fixes.
- Update to a kernel build containing the referenced stable bounds-checking commits.
- Prioritize shared workstations, laptops, and systems exposing audio firmware paths.
- Track remediation by kernel branch, not only CVE scanner status.
Validation and detection
- Inventory Linux kernel versions across affected assets.
- Confirm whether ASoC/SOF audio support is present or enabled.
- Map installed kernels against vendor advisories and referenced stable commits.
- Verify patched systems boot the updated kernel after maintenance.
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-120: 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-2024-26927 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
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/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
1 official scoreWe 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:N/UI:N/S:U/C:H/I:H/A:H2.55.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:L/AC:L/PR:N/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/d133d67e7e724102d1e53009c4f88afaaf3e167cCVE reference, Linux
- https://git.kernel.org/stable/c/ced7df8b3c5c4751244cad79011e86cf1f809153CVE reference, Linux
- https://git.kernel.org/stable/c/044e220667157fb9d59320341badec59cf45ba48CVE reference, Linux
- https://git.kernel.org/stable/c/9eeb8e1231f6450c574c1db979122e171a1813abCVE reference, Linux
- https://git.kernel.org/stable/c/98f681b0f84cfc3a1d83287b77697679e0398306CVE 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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.