Security readout for executives and security teams
Plain-English summary
A Linux kernel diagnostic path can crash the system while memory is being hot-removed and huge pages are in use. The kernel may read an invalid filename pointer while reporting a page problem. This primarily threatens availability in specialized environments using memory hot-plug, DAX/CXL, or hugetlb workloads.
Executive priority
Prioritize remediation for infrastructure that dynamically offlines memory or combines CXL/DAX memory with huge pages. Treat general-purpose systems without these features as lower immediate urgency, while still applying supported kernel security updates during normal maintenance.
Technical view
During memory offlining, dump_mapping() can pass an invalid dentry.d_name.name to the print facility. The resulting supervisor-mode page fault can produce a kernel oops or crash. Stable kernel fixes retrieve the filename through a safer no-fault mechanism, although the reported filename may remain unreliable.
Likely exposure
Exposure is most plausible on Linux systems supporting memory hot-remove while hugetlb-backed memory is actively accessed. The bundle identifies affected Linux releases from 5.0 and lists several later branch boundaries, but exact distribution package applicability requires vendor confirmation.
Exploitation context
The CVSS vector describes a local, low-complexity, low-privilege condition with no user interaction. The supplied evidence demonstrates a crash under a specific operational sequence. KEV is false, and no source establishes active exploitation or a public exploit. Claimed confidentiality impact is not demonstrated in the description.
Researcher notes
The observed fault occurs in dentry_name() through dump_mapping() during page migration and memory offlining. The fix avoids unsafe filename formatting by retrieving the name more defensively. Sources caution that the filename can still be unreliable; the protection addresses the crash, not filename trustworthiness.
Mitigation direction
- Install a vendor-supported kernel containing the referenced stable fixes.
- Check distribution advisories for the corrected package version applicable to each kernel branch.
- Prioritize systems using memory hot-plug, DAX, CXL, or hugetlb workloads.
- Restrict memory-offlining operations to authorized administrators until updates are deployed.
Validation and detection
- Inventory running kernel versions and identify systems using memory hot-remove or hugetlb.
- Compare installed packages against distribution advisories and kernel changelogs.
- Confirm the applicable stable fix is present in deployed kernel source or package metadata.
- After updating, validate memory-offlining workflows safely in a representative staging environment.
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.
CVE-2024-49934 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:N/A:H1.85.2LinuxVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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/1a4159138e718db6199f0abf376ad52f726dcc5cCVE reference, Linux
- https://git.kernel.org/stable/c/e0f6ee75f50476607ca82fc7c3711c795ce09b52CVE reference, Linux
- https://git.kernel.org/stable/c/f92b8829c6e75632de4e2b9f70e7a7e6c5c2ba98CVE reference, Linux
- https://git.kernel.org/stable/c/ef921bc72328b577cb45772ff7921cba4773b74aCVE reference, Linux
- https://git.kernel.org/stable/c/7f7b850689ac06a62befe26e1fd1806799e7f152CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.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.