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CVE Record

CVE-2024-35826: block: Fix page refcounts for unaligned buffers in __bio_release_pages()

In the Linux kernel, the following vulnerability has been resolved: block: Fix page refcounts for unaligned buffers in __bio_release_pages() Fix an incorrect number of pages being released for buffers that do not start at the beginning of a page.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-35826 is a Linux kernel block-layer memory accounting bug. For certain unaligned buffers, the kernel could release the wrong number of memory pages. The public record does not state a business impact such as crash, data exposure, or privilege escalation.

Executive priority

Moderate operational priority with unknown security severity. Include it in normal kernel patch cycles, escalating for exposed or high-value Linux infrastructure once vendor advisories confirm affected packages and remediation timing.

Technical view

The issue is in __bio_release_pages(), where buffers not starting at a page boundary could lead to incorrect page refcount release behavior. The source identifies upstream stable fixes but provides no CVSS, CWE, exploit details, or explicit impact statement.

Likely exposure

Exposure depends on running Linux kernels matching the affected entries in the CVE record, including listed 6.1, 6.6, 6.7, 6.8, and 6.9 lines. Vendor backports may change practical exposure, so distribution-specific kernel advisories are required.

Exploitation context

The provided sources do not report active exploitation, and the CVE is not marked KEV. They also do not describe a public exploit path. Treat this as a kernel maintenance issue unless vendor guidance adds impact or urgency.

Researcher notes

The evidence supports a block-layer page refcount defect and upstream fixes. It does not support claims about exploitability, affected configurations beyond Linux kernel versions, or specific impact categories. Further analysis requires vendor advisories or patch review.

Mitigation direction

  • Check Linux distribution advisories for CVE-2024-35826.
  • Update to a vendor kernel containing the referenced stable fixes.
  • Prioritize systems on affected listed kernel lines.
  • If patch timing is unclear, follow vendor mitigation guidance.
  • Track kernel package backport status, not only upstream version numbers.

Validation and detection

  • Inventory running kernel versions across Linux hosts.
  • Map vendor kernel builds to CVE-2024-35826 advisory status.
  • Confirm patched kernels include the referenced stable commits or vendor backports.
  • Verify no critical Linux hosts remain on affected kernel builds.
Prepared
Confidence
medium
Sources
7

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

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CVE-2024-35826 mapping review

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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
6Source 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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux9025ee1079291fac79c7fcc20086e9f0015f86f4, 8955324cc9f93304efe163120038b38c36c09fba, d198c15d181cc9d580f0f2c25150b077d1d49c1a, 1b151e2435fc3a9b10c8946c6aebe9f3e1938c55, 1b151e2435fc3a9b10c8946c6aebe9f3e1938c55, d2d0b95ca1b5fefa3deed444a803c9f809db66cf, 3f4e660144edb053886fc80f587a71ad7afc2ad6, bfc0647791d7a8f3e178a896a26c4ef7794876b7, 0f2dca516541032fe47a1236c852f58edc662795unaffected
LinuxLinux6.8, 0, 6.1.84, 6.6.24, 6.7.12, 6.8.3, 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.