Analyst readout for executives and security teams
Plain-English summary
CVE-2024-38612 is a Linux kernel flaw in IPv6 Segment Routing initialization error handling. Public data rates it critical, but the source bundle does not show active exploitation or a public weaponized path. Business urgency depends on whether exposed Linux hosts or appliances run affected kernels or vendor firmware.
Executive priority
Prioritize confirmation and patch planning now. The score is critical, but response should be evidence-led: identify affected Linux and appliance assets, apply vendor-supported updates, and avoid emergency assumptions where backports or vendor firmware status are unclear.
Technical view
The issue is in seg6_init() when CONFIG_IPV6_SEG6_LWTUNNEL is not defined. If seg6_hmac_init() fails, genl_unregister_family() is not called. The CVE links this to possible use-after-free and null-pointer dereference classes and provides Linux stable fix commits.
Likely exposure
Likely exposure is Linux systems and embedded appliances using affected kernel versions or downstream vendor builds. The bundle references Linux stable fixes, Debian LTS, and Siemens product advisories. Exposure should be confirmed by kernel version, distribution backport status, and appliance vendor advisory status.
Exploitation context
The CVSS vector is network, low complexity, no privileges, and no user interaction. However, KEV is false and the supplied sources do not state active exploitation. Treat exploitability as serious but not confirmed in the wild from this bundle.
Researcher notes
The vulnerability is an initialization error-path cleanup bug, not a fully described exploit chain in the provided sources. Key research questions are reachable configurations, whether the failure path can be externally triggered, and how downstream vendors backported the stable fixes.
Mitigation direction
- Apply the relevant Linux kernel stable update or distribution security update.
- Check Debian LTS and appliance vendor advisories for backported fixes.
- For Siemens products, follow the specific ProductCERT advisory guidance.
- Prioritize externally reachable Linux systems and security appliances for assessment.
- Do not assume upstream version numbers alone prove vulnerability after vendor backports.
Validation and detection
- Inventory Linux kernel versions across servers, containers hosts, and appliances.
- Compare installed kernels with the CVE record and stable fix commits.
- Check distribution changelogs for CVE-2024-38612 backports.
- Review kernel configuration for IPv6 Segment Routing relevance where available.
- Confirm Siemens product exposure against each referenced ProductCERT advisory.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit 10610575
- Linux stable commit 646cd236
- Linux stable commit 00e63353
- Linux stable commit 1a63730f
- Linux stable commit e77a3ec7
- Linux stable commit 3398a40d
- Linux stable commit 85a70ff1
- Debian LTS announcement
- Siemens ProductCERT SSA-398330
- Siemens ProductCERT SSA-265688
Based on public source material and reviewed before publication.
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-416: 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 lookupCWE-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-2024-38612 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/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/10610575a3ac2a702bf5c57aa931beaf847949c7CVE reference, Linux
- https://git.kernel.org/stable/c/646cd236c55e2cb5f146fc41bbe4034c4af5b2a4CVE reference, Linux
- https://git.kernel.org/stable/c/00e6335329f23ac6cf3105931691674e28bc598cCVE reference, Linux
- https://git.kernel.org/stable/c/1a63730fb315bb1bab97edd69ff58ad45e04bb01CVE reference, Linux
- https://git.kernel.org/stable/c/e77a3ec7ada84543e75722a1283785a6544de925CVE reference, Linux
- https://git.kernel.org/stable/c/3398a40dccb88d3a7eef378247a023a78472db66CVE reference, Linux
- https://git.kernel.org/stable/c/85a70ff1e572160f1eeb096ed48d09a1c9d4d89aCVE reference, Linux
- https://git.kernel.org/stable/c/c04d6a914e890ccea4a9d11233009a2ee7978bf4CVE reference, Linux
- https://git.kernel.org/stable/c/160e9d2752181fcf18c662e74022d77d3164cd45CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference, CVE
- https://cert-portal.siemens.com/productcert/html/ssa-398330.htmlCVE reference, siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlCVE reference, siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-613116.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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.