Security readout for executives and security teams
Plain-English summary
This is a Linux kernel bug in the qedf SCSI driver. A privileged local user could trigger an out-of-bounds read when the kernel parses a non-terminated user-supplied buffer, potentially causing a denial of service. The public record does not indicate active exploitation.
Executive priority
Handle through normal kernel patch management, with higher priority for storage-facing Linux hosts where qedf is used. This is not currently evidenced as internet-exploited, but it can affect availability.
Technical view
The qedf driver copied a count-sized userspace buffer, then passed it to kstrtouint without ensuring NUL termination. The kernel fix replaces memdup_user with memdup_user_nul. CVSS is 4.4: local access, low complexity, high privileges, no user interaction, high availability impact.
Likely exposure
Exposure is mainly Linux systems on affected kernel versions where the qedf driver path is reachable by a highly privileged local user. Internet-facing exposure is not indicated by the CVSS vector or source bundle.
Exploitation context
The CVE is not listed as KEV in the source bundle. Available evidence supports a local, high-privilege denial-of-service scenario, not remote exploitation or public weaponization.
Researcher notes
The root issue is missing string termination before kstrtouint in qedf. The bundle lists CWE-476, but the description specifically supports an out-of-bounds read from unterminated input. Validate using source review and fixed kernel provenance, not exploit reproduction.
Mitigation direction
- Update to a kernel containing the listed stable qedf fix commits.
- Apply distribution kernel advisories, including Debian LTS guidance where applicable.
- Check vendor guidance for appliances or products shipping Linux kernels.
- Prioritize hosts using the qedf driver or affected storage configurations.
Validation and detection
- Inventory Linux kernel versions against the affected version data.
- Confirm whether the qedf driver is present and in use.
- Verify the vendor kernel includes the memdup_user_nul fix.
- Track Debian or device-vendor advisories for deployed platforms.
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-476: 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-2024-38559 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
- Medium
- CVSS
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/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:H/UI:N/S:U/C:N/I:N/A:H0.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/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/1f84a2744ad813be23fc4be99fb74bfb24aadb95CVE reference, Linux
- https://git.kernel.org/stable/c/a75001678e1d38aa607d5b898ec7ff8ed0700d59CVE reference, Linux
- https://git.kernel.org/stable/c/769b9fd2af02c069451fe9108dba73355d9a021cCVE reference, Linux
- https://git.kernel.org/stable/c/dccd97b39ab2f2b1b9a47a1394647a4d65815255CVE reference, Linux
- https://git.kernel.org/stable/c/d93318f19d1e1a6d5f04f5d965eaa9055bb7c613CVE reference, Linux
- https://git.kernel.org/stable/c/563e609275927c0b75fbfd0d90441543aa7b5e0dCVE reference, Linux
- https://git.kernel.org/stable/c/4907f5ad246fa9b51093ed7dfc7da9ebbd3f20b8CVE reference, Linux
- https://git.kernel.org/stable/c/177f43c6892e6055de6541fe9391a8a3d1f95fc9CVE reference, Linux
- https://git.kernel.org/stable/c/d0184a375ee797eb657d74861ba0935b6e405c62CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference, CVE
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlCVE reference, siemens-SADP
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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.