Security readout for executives and security teams
Plain-English summary
CVE-2024-26581 is a high-severity Linux kernel flaw in netfilter's nft_set_rbtree logic. A local low-privileged attacker could potentially gain broad control over confidentiality, integrity, and availability on an affected system. The public bundle says the issue is resolved in kernel stable commits, but does not show active exploitation.
Executive priority
Treat this as a high-priority kernel maintenance issue, especially for systems with local users, tenants, or untrusted workloads. It is not currently supported as actively exploited by the provided evidence, but successful exploitation could compromise the host broadly.
Technical view
The bug is in nft_set_rbtree lazy garbage collection during insert handling. Garbage collection could collect an end interval element added in the current transaction; the fix skips end interval elements that are not yet active. CVSS 3.1 is 7.8: local, low complexity, low privileges, no user interaction, high CIA impact.
Likely exposure
Exposure is likely limited to Linux systems running affected kernel versions or commits listed in the CVE data. The source bundle names Linux kernel branches including 5.4, 5.10, 5.15, 6.1, 6.5, 6.6, 6.7, and 6.8-related entries. Exact distribution exposure should be confirmed against vendor kernel packages.
Exploitation context
The CVSS vector indicates local exploitation requiring low privileges and no user interaction. The provided sources do not state public exploit availability or active exploitation, and KEV status is false. The bundle does not clarify required nftables configuration, namespace conditions, or capability requirements.
Researcher notes
Focus analysis on netfilter nft_set_rbtree interval transaction handling and lazy garbage collection behavior. The public description is concise and does not provide exploit primitives. Validate against exact stable commits and downstream distro backports rather than relying only on upstream version labels.
Mitigation direction
- Update affected Linux kernels to vendor releases containing the referenced stable fixes.
- Check Debian and other distribution advisories for backported fixed kernel package versions.
- Prioritize multi-user, shared hosting, container, and workstation fleets with local untrusted access.
- Where patching is delayed, reduce local shell access to affected systems.
- Monitor vendor guidance for any additional mitigations or regression notes.
Validation and detection
- Inventory Linux kernel versions across servers, workstations, appliances, and container hosts.
- Map package versions to distribution advisories and the CVE fixed stable commits.
- Confirm whether affected systems expose local untrusted users or workloads.
- Verify patched systems are running the updated kernel after reboot.
- Track exceptions where embedded or appliance vendors control kernel delivery.
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-2024-26581 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/c60d252949caf9aba537525195edae6bbabc35ebCVE reference, Linux
- https://git.kernel.org/stable/c/10e9cb39313627f2eae4cd70c4b742074e998fd8CVE reference, Linux
- https://git.kernel.org/stable/c/4cee42fcf54fec46b344681e7cc4f234bb22f85aCVE reference, Linux
- https://git.kernel.org/stable/c/2bab493a5624444ec6e648ad0d55a362bcb4c003CVE reference, Linux
- https://git.kernel.org/stable/c/1296c110c5a0b45a8fcf58e7d18bc5da61a565cbCVE reference, Linux
- https://git.kernel.org/stable/c/b734f7a47aeb32a5ba298e4ccc16bb0c52b6dbf7CVE reference, Linux
- https://git.kernel.org/stable/c/6eb14441f10602fa1cf691da9d685718b68b78a9CVE reference, Linux
- https://git.kernel.org/stable/c/60c0c230c6f046da536d3df8b39a20b9a9fd6af0CVE 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.