Security readout for executives and security teams
Plain-English summary
CVE-2024-26743 is a Linux kernel RDMA driver bug in the qedr path. When creating a user queue pair fails, resources may not be freed correctly, triggering a kernel warning during cleanup. The provided sources do not show active exploitation or a CVSS score.
Executive priority
Treat this as targeted infrastructure maintenance, not an internet-wide emergency based on current evidence. Prioritize patching specialized Linux RDMA systems first, especially production compute, storage, or high-performance networking environments using qedr.
Technical view
The flaw is in RDMA/qedr, specifically qedr_create_user_qp error handling when qedr_init_user_queue() fails. The fix frees allocated resources on that failure path, avoiding a warning in ib_uverbs cleanup. Affected Linux kernel ranges are listed from 4.11 through fixed stable releases around 5.10.211, 5.15.150, 6.1.80, 6.6.19, 6.7.7, and 6.8.
Likely exposure
Exposure is most likely on Linux hosts using the qedr RDMA driver, typically with compatible QLogic/Marvell FastLinQ RDMA-capable adapters and user RDMA workloads. General Linux systems without this driver or hardware are less likely to be reachable through this bug.
Exploitation context
The source bundle contains no KEV listing, exploit report, public weaponization claim, or attacker technique. The evidence describes a kernel warning and resource cleanup bug during an RDMA user queue failure path, not a confirmed practical exploit chain.
Researcher notes
Evidence is limited to the Linux kernel fix description, stable backports, affected version metadata, and a Debian LTS reference. No CWE, CVSS, exploitability assessment, or impact beyond the warning/resource cleanup path is supplied, so severity remains uncertain.
Mitigation direction
- Apply kernel or distribution updates containing the referenced stable fixes.
- Prioritize Linux systems running qedr RDMA hardware and user RDMA workloads.
- Review Debian LTS or your distribution advisory for exact fixed package versions.
- If updates are unavailable, follow vendor guidance before applying operational workarounds.
Validation and detection
- Inventory kernels and compare them with the affected and fixed version ranges.
- Confirm whether the qedr driver and RDMA hardware are present or active.
- Check kernel logs for the cited uverbs_destroy_ufile_hw warning pattern.
- After updating, retest RDMA workloads and confirm the warning no longer appears.
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-2024-26743 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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
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/5639414a52a29336ffa1ede80a67c6d927acbc5aCVE reference, Linux
- https://git.kernel.org/stable/c/135e5465fefa463c5ec93c4eede48b9fedac894aCVE reference, Linux
- https://git.kernel.org/stable/c/7f31a244c753aacf40b71d01f03ca6742f81bbbcCVE reference, Linux
- https://git.kernel.org/stable/c/95175dda017cd4982cd47960536fa1de003d3298CVE reference, Linux
- https://git.kernel.org/stable/c/bab8875c06ebda5e01c5c4cab30022aed85c14e6CVE reference, Linux
- https://git.kernel.org/stable/c/5ba4e6d5863c53e937f49932dee0ecb004c65928CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
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.