LiveActive security incident?Get immediate response
CVE Record

CVE-2024-35815: fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion

In the Linux kernel, the following vulnerability has been resolved: fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion The first kiocb_set_cancel_fn() argument may point at a struct kiocb that is not embedded inside struct aio_kiocb. With the current code, depending on the compiler, the req->ki_ctx read happens either before the IOCB_AIO_RW test or after that test. Move the req->ki_ctx read such that it is guaranteed that the IOCB_AIO_RW test happens first.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-35815 is a Linux kernel bug in asynchronous I/O handling. The kernel fix ensures a type check happens before reading a field through a converted structure pointer. Business risk depends on deployed kernel versions and vendor packaging; the provided sources do not give CVSS, impact class, or active exploitation evidence.

Executive priority

Treat as a kernel maintenance item with uncertain severity. Prioritize normal security patch cycles, escalating for internet-facing, multi-tenant, or high-value Linux systems once vendor impact guidance confirms exposure.

Technical view

The flaw is in fs/aio around kiocb_set_cancel_fn(). A pointer passed as struct kiocb may not be embedded in struct aio_kiocb. Compiler ordering could allow req->ki_ctx to be read before confirming IOCB_AIO_RW. Stable kernel commits move the read after the check.

Likely exposure

Exposure is most likely on Linux systems, appliances, or distributions carrying affected kernel code. The bundle lists Linux kernel stable fixes and Debian LTS advisories, but does not provide complete vulnerable version ranges or downstream package mappings.

Exploitation context

The provided bundle reports no CISA KEV listing and gives no cited evidence of exploitation in the wild. It also does not describe a public exploit, required privileges, or a complete impact statement.

Researcher notes

The key issue is ordering around IOCB_AIO_RW validation before struct aio_kiocb access. The bundle lacks CVSS, CWE, privilege requirements, and concrete impact. Analysis should stay anchored to kernel commits and downstream advisories.

Mitigation direction

  • Update affected Linux kernels through vendor-supported packages.
  • Prioritize Debian LTS systems using the cited Debian advisories.
  • Check appliance and embedded Linux vendors for backported fixes.
  • Track kernel stable commits if maintaining custom kernels.
  • Do not rely on upstream version alone; verify vendor backports.

Validation and detection

  • Inventory Linux kernel versions across servers, containers, and appliances.
  • Compare installed packages against vendor security advisories.
  • Confirm custom kernels include the referenced stable commits.
  • Review vulnerability scanner findings for package-level backport awareness.
  • Document exceptions where vendors mark builds 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.

cve · low confidence lookup

CVE-2024-35815 mapping review

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

Open ATT&CK lookup
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
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
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux337b543e274fe7a8f47df3c8293cc6686ffa620f, b4eea7a05ee0ab5ab0514421e6ba8c5d249cf942, ea1cd64d59f22d6d13f367d62ec6e27b9344695f, d7b6fa97ec894edd02f64b83e5e72e1aa352f353, 18f614369def2a11a52f569fe0f910b199d13487, e7e23fc5d5fe422827c9a43ecb579448f73876c7, 1dc7d74fe456944a9b1c57bd776280249f441ac6, b820de741ae48ccf50dd95e297889c286ff4f760unaffected
LinuxLinux4.19.308, 5.4.270, 5.10.211, 5.15.150, 6.1.80, 6.6.19, 6.7.7unaffected
Weakness

CWE details

No CWE listed

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