Security readout for executives and security teams
Plain-English summary
CVE-2024-26805 is a Linux kernel information leak. A netlink code path could copy uninitialized kernel memory into data returned to user space. The public record shows a kernel fix, but does not provide CVSS, confirmed exploitation, or a complete business-impact score.
Executive priority
Treat this as a routine but important kernel patching item, higher priority for multi-user, hosting, CI, and container environments. There is no cited active exploitation, but kernel information leaks can weaken broader system protections.
Technical view
The flaw is in netlink_to_full_skb and __skb_datagram_iter handling. The vulnerable code used skb->end, a buffer offset including tailroom, as a copy length instead of skb->len, the actual data length. This could expose uninitialized or previously freed kernel memory during copy-to-user operations.
Likely exposure
Exposure is likely on systems running affected Linux kernel versions or downstream packages before their vendor backports. The bundle lists Linux as affected across multiple stable lines, including 4.3 and later listed branches up to 6.8, but exact exposure depends on distribution kernel patches.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. The issue was reported by syzbot with KMSAN evidence. Public details support a kernel memory disclosure condition, but not remote exploitation, privilege escalation, or a reliable exploit chain.
Researcher notes
The key patch changes the copy length from skb->end to skb->len in netlink_to_full_skb. Evidence is strongest for information disclosure through uninitialized tailroom copying. The bundle does not establish exploit prerequisites, reachable namespaces, required privileges, or practical impact beyond kernel memory disclosure.
Mitigation direction
- Update to a vendor kernel package that includes the CVE-2024-26805 fix.
- For custom kernels, apply the referenced stable netlink commits.
- Prioritize shared hosts, container platforms, and systems running untrusted local workloads.
- Check distribution advisories, including Debian LTS notices, for backported fixes.
- Reboot after kernel update so the fixed kernel is active.
Validation and detection
- Inventory running kernel versions across affected Linux assets.
- Compare installed kernels against vendor advisories and referenced stable commits.
- Check package changelogs for CVE-2024-26805 or the netlink fix.
- Confirm systems booted into the updated kernel after remediation.
- Use vulnerability management data to identify remaining unfixed Linux hosts.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit ec343a55
- Linux stable commit 9ae51361
- Linux stable commit f19d1f98
- Linux stable commit c71ed29d
- Linux stable commit 0b27bf4c
- Linux stable commit d3ada42e
- Linux stable commit 59fc3e3d
- Linux stable commit 661779e1
- Debian LTS announcement 2024-06-17
- Debian LTS announcement 2024-06-20
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-2024-26805 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/ec343a55b687a452f5e87f3b52bf9f155864df65CVE reference, Linux
- https://git.kernel.org/stable/c/9ae51361da43270f4ba0eb924427a07e87e48777CVE reference, Linux
- https://git.kernel.org/stable/c/f19d1f98e60e68b11fc60839105dd02a30ec0d77CVE reference, Linux
- https://git.kernel.org/stable/c/c71ed29d15b1a1ed6c464f8c3536996963046285CVE reference, Linux
- https://git.kernel.org/stable/c/0b27bf4c494d61e5663baa34c3edd7ccebf0ea44CVE reference, Linux
- https://git.kernel.org/stable/c/d3ada42e534a83b618bbc1e490d23bf0fdae4736CVE reference, Linux
- https://git.kernel.org/stable/c/59fc3e3d049e39e7d0d271f20dd5fb47c57faf1dCVE reference, Linux
- https://git.kernel.org/stable/c/661779e1fcafe1b74b3f3fe8e980c1e207fea1fdCVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.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.