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CVE Record

CVE-2024-49859: f2fs: fix to check atomic_file in f2fs ioctl interfaces

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to check atomic_file in f2fs ioctl interfaces Some f2fs ioctl interfaces like f2fs_ioc_set_pin_file(), f2fs_move_file_range(), and f2fs_defragment_range() missed to check atomic_write status, which may cause potential race issue, fix it.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-49859 is a Linux kernel f2fs filesystem flaw. Some f2fs ioctl operations did not check atomic-write state, creating a potential race condition. The public record does not provide CVSS, CWE, or a concrete impact statement, so urgency depends on whether affected kernels use f2fs.

Executive priority

Treat as a targeted kernel maintenance item, not an emergency based on current evidence. Patch through normal kernel update cycles, with higher priority for f2fs-using systems and externally managed Linux fleets.

Technical view

The fix adds atomic_file state checks to f2fs ioctl paths including set pin file, move file range, and defragment range. Missing checks could allow a race while atomic writes are active. Kernel stable commits and a Debian LTS advisory are referenced, but the bundle does not describe exploitability or impact class.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel versions with f2fs available or in use. The bundle lists Linux as affected and references fixes across stable branches, including 6.1.113, 6.6.54, 6.10.13, and 6.11.2.

Exploitation context

No active exploitation is supported by the bundle. KEV is false, and the provided sources do not describe public exploit code, attack prerequisites, privilege requirements, or real-world abuse.

Researcher notes

Evidence is limited to the kernel resolution text, affected version data, stable commit references, and Debian LTS notice. The bundle does not establish security impact, exploitability, or attacker model beyond a potential race in f2fs ioctl handling.

Mitigation direction

  • Update affected Linux kernels through vendor-supported packages or stable kernel fixes.
  • Prioritize systems where f2fs is enabled, mounted, or used for writable storage.
  • Apply relevant Debian LTS kernel updates where Debian LTS systems are in scope.
  • Track vendor advisories for exact fixed package versions and reboot requirements.

Validation and detection

  • Inventory Linux kernel versions across servers, endpoints, appliances, and images.
  • Identify systems with f2fs support enabled or f2fs filesystems mounted.
  • Compare running kernels against vendor advisories and referenced stable fixes.
  • Confirm patched kernels are booted, not only installed on disk.
Prepared
Confidence
medium
Sources
8

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-2024-49859 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
7Source 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
LinuxLinux98e4da8ca301e062d79ae168c67e56f3c3de3ce4, 98e4da8ca301e062d79ae168c67e56f3c3de3ce4, 98e4da8ca301e062d79ae168c67e56f3c3de3ce4, 98e4da8ca301e062d79ae168c67e56f3c3de3ce4, 98e4da8ca301e062d79ae168c67e56f3c3de3ce4unaffected
LinuxLinux3.8, 0, 6.1.113, 6.6.54, 6.10.13, 6.11.2, 6.12affected
Weakness

CWE details

No CWE listed

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