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CVE Record

CVE-2024-35925: block: prevent division by zero in blk_rq_stat_sum()

In the Linux kernel, the following vulnerability has been resolved: block: prevent division by zero in blk_rq_stat_sum() The expression dst->nr_samples + src->nr_samples may have zero value on overflow. It is necessary to add a check to avoid division by zero. Found by Linux Verification Center (linuxtesting.org) with Svace.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-35925 is a Linux kernel block-layer flaw where an internal statistics calculation can divide by zero after a counter overflow. The public record does not provide CVSS, CWE, or impact detail. Treat it as a kernel stability risk until your Linux distribution or appliance vendor confirms exposure and fix status.

Executive priority

Handle through normal kernel patch governance unless vendor advisories raise the severity for your environment. The evidence supports remediation tracking, but not emergency response based on active exploitation or public weaponization.

Technical view

The issue is in blk_rq_stat_sum(). The sum of dst->nr_samples and src->nr_samples can overflow to zero, leading to division by zero. The kernel stable references are fixes that add a guard for this condition. The CVE lists Linux kernel versions including 4.15 through 6.9 as affected context.

Likely exposure

Exposure is most likely on systems running affected Linux kernel builds or downstream kernels derived from them. The bundle names Linux as the affected product and includes Debian LTS advisories, so distribution-packaged kernels should be checked against vendor security updates.

Exploitation context

The bundle does not report active exploitation, and KEV status is false. No exploitability details, required privileges, attack vector, or trigger conditions are provided beyond the internal overflow-to-zero condition in kernel block request statistics.

Researcher notes

Evidence is limited to the CVE description, affected Linux version context, stable kernel fix references, and Debian LTS advisories. The bundle does not include CVSS, CWE, proof-of-concept status, or detailed reachability analysis, so exposure validation depends on kernel provenance and vendor backports.

Mitigation direction

  • Apply kernel updates from your Linux distribution or device vendor.
  • Prioritize internet-facing, multi-tenant, and high-availability Linux systems for kernel review.
  • Check Debian LTS advisories if managing Debian-based long-term-support hosts.
  • Track the referenced kernel stable commits for backport confirmation.
  • If no vendor fix is available, monitor vendor guidance before making operational changes.

Validation and detection

  • Inventory Linux kernel versions across servers, containers hosts, appliances, and embedded systems.
  • Compare running kernels against your vendor advisory and fixed package versions.
  • Confirm whether the referenced stable commits are present in custom kernels.
  • Review Debian LTS notices where Debian-based systems are in scope.
  • Document exceptions where vendors state the product is unaffected.
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-2024-35925 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
3ADP providers
13Source 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
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxeca8b53a6769e60d6d8240d71202d73b0af81901, eca8b53a6769e60d6d8240d71202d73b0af81901, eca8b53a6769e60d6d8240d71202d73b0af81901, eca8b53a6769e60d6d8240d71202d73b0af81901, eca8b53a6769e60d6d8240d71202d73b0af81901, eca8b53a6769e60d6d8240d71202d73b0af81901, eca8b53a6769e60d6d8240d71202d73b0af81901, eca8b53a6769e60d6d8240d71202d73b0af81901unaffected
LinuxLinux4.15, 0, 4.19.312, 5.4.274, 5.10.215, 5.15.155, 6.1.86, 6.6.27, 6.8.6, 6.9affected
Weakness

CWE details

No CWE listed

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