Security readout for executives and security teams
Plain-English summary
CVE-2024-39277 is a Linux kernel bug in the DMA mapping benchmark path. A local user with privileges can trigger incorrect NUMA node handling, causing an out-of-bounds access. The CVSS score is high, but sources do not show active exploitation.
Executive priority
Patch through normal high-severity kernel maintenance, faster for shared compute, developer workstations, and multi-user Linux systems. No source in the bundle confirms active exploitation, so emergency treatment depends on local exposure and patch availability.
Technical view
The flaw occurs when do_map_benchmark() calls cpumask_of_node() with NUMA_NO_NODE. The CVE record shows UBSAN reporting an array index of -1 in x86 topology code during a debugfs ioctl path. Linux stable commits correct the handling of this NUMA_NO_NODE case.
Likely exposure
Exposure is most relevant to systems running affected Linux kernel versions listed in the CVE data, including 5.11 through fixed stable lines around 5.15.161, 6.1.93, 6.6.33, 6.9.4, and 6.10.
Exploitation context
The CVSS vector is local, low complexity, low privileges, and no user interaction. The source bundle says KEV is false and provides no public exploitation evidence. Treat this as a local kernel risk, not a confirmed internet-exploited issue.
Researcher notes
The bug is CWE-125 and appears tied to NUMA_NO_NODE handling in kernel/dma/map_benchmark.c. The trace reaches map_benchmark_ioctl through debugfs. The CVE data provides stable commit references but does not provide exploit details, operational mitigations, or distribution-specific package names.
Mitigation direction
- Update to a vendor kernel containing the relevant Linux stable fixes.
- Prioritize affected Linux hosts where local users or workloads are less trusted.
- Track distribution advisories for backported fixes matching your kernel branch.
- If no package is available, request vendor guidance or backport review.
Validation and detection
- Inventory Linux kernel versions across servers, workstations, and images.
- Compare deployed kernels against the CVE affected and fixed version data.
- Check whether vendor advisories map this CVE to installed packages.
- Confirm patched systems report an updated kernel after reboot.
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-125: 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-2024-39277 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
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: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
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/b41b0018e8ca06e985e87220a618ec633988fd13CVE reference, Linux
- https://git.kernel.org/stable/c/8e1ba9df9a35e8dc64f657a64e523c79ba01e464CVE reference, Linux
- https://git.kernel.org/stable/c/5a91116b003175302f2e6ad94b76fb9b5a141a41CVE reference, Linux
- https://git.kernel.org/stable/c/50ee21bfc005e69f183d6b4b454e33f0c2571e1fCVE reference, Linux
- https://git.kernel.org/stable/c/e64746e74f717961250a155e14c156616fcd981fCVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.