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CVE Record

CVE-2024-26735: ipv6: sr: fix possible use-after-free and null-ptr-deref

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix possible use-after-free and null-ptr-deref The pernet operations structure for the subsystem must be registered before registering the generic netlink family.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-26735 is a Linux kernel flaw in IPv6 Segment Routing code. The public record says it can cause possible use-after-free and null pointer dereference conditions. Severity, CVSS, and practical exploitability are not provided, so urgency should be driven by kernel exposure and vendor patch availability.

Executive priority

Prioritize this as a kernel maintenance risk with incomplete severity data. Patch exposed, multi-tenant, and business-critical Linux systems first, especially where IPv6 networking is in use. Do not treat it as confirmed actively exploited from the supplied sources.

Technical view

The issue is a registration-order bug: the per-network operations structure for the IPv6 Segment Routing subsystem must be registered before the generic netlink family. The Linux stable references provide fixes across supported kernel lines. Public data does not define trigger prerequisites, privilege requirements, or impact beyond possible use-after-free and null pointer dereference.

Likely exposure

Exposure is likely limited to systems running affected Linux kernel versions that include the IPv6 Segment Routing subsystem. The bundle lists affected Linux versions and stable fix references, but downstream distributions may backport patches without changing upstream version numbers.

Exploitation context

The bundle marks KEV as false, and no cited source states active exploitation. Public evidence does not provide a proof of concept, weaponized exploit, or confirmed attacks. Treat exploitation status as unknown, not active.

Researcher notes

The useful research pivot is the upstream stable fix set and the registration ordering between IPv6 Segment Routing pernet operations and generic netlink family setup. The source bundle lacks CVSS, CWE, trigger path detail, and exploitability evidence, so validation should stay patch-focused.

Mitigation direction

  • Update to a vendor kernel containing the listed stable fixes or later.
  • Apply referenced Debian LTS kernel security updates where applicable.
  • Confirm appliances and managed platforms have vendor-advised patched kernels.
  • Track downstream vendor advisories for backported kernel fixes.

Validation and detection

  • Inventory Linux kernel versions across servers, host nodes, appliances, and images.
  • Map kernels against the CVE record and vendor security advisories.
  • Check package changelogs for CVE-2024-26735 or listed stable commits.
  • After updating, confirm systems boot into the patched kernel.
Prepared
Confidence
medium
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

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CVE-2024-26735 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
2ADP providers
12Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux915d7e5e5930b4f01d0971d93b9b25ed17d221aa, 915d7e5e5930b4f01d0971d93b9b25ed17d221aa, 915d7e5e5930b4f01d0971d93b9b25ed17d221aa, 915d7e5e5930b4f01d0971d93b9b25ed17d221aa, 915d7e5e5930b4f01d0971d93b9b25ed17d221aa, 915d7e5e5930b4f01d0971d93b9b25ed17d221aa, 915d7e5e5930b4f01d0971d93b9b25ed17d221aa, 915d7e5e5930b4f01d0971d93b9b25ed17d221aaunaffected
LinuxLinux4.10, 0, 4.19.308, 5.4.270, 5.10.211, 5.15.150, 6.1.80, 6.6.19, 6.7.7, 6.8affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.