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CVE Record

CVE-2025-21782: orangefs: fix a oob in orangefs_debug_write

In the Linux kernel, the following vulnerability has been resolved: orangefs: fix a oob in orangefs_debug_write I got a syzbot report: slab-out-of-bounds Read in orangefs_debug_write... several people suggested fixes, I tested Al Viro's suggestion and made this patch.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2025-21782 is a Linux kernel flaw in the OrangeFS debug write path that can read beyond allocated memory. The public record does not provide a CVSS score, business impact, or evidence of active exploitation. Organizations should treat it as a kernel maintenance issue and prioritize updates where OrangeFS-capable kernels are in use.

Executive priority

Schedule remediation through normal kernel patch cycles, with higher priority for systems using OrangeFS or exposing many local users. There is insufficient public evidence to justify emergency response solely from this CVE.

Technical view

The Linux kernel fixed a slab out-of-bounds read in orangefs_debug_write, reported by syzbot. The CVE references stable kernel commits across maintained branches. The source bundle does not define attacker prerequisites, required privileges, confidentiality impact, or reliability of exploitation.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel builds with OrangeFS functionality present. Actual reachability depends on local kernel configuration and access to the relevant debug write interface, which the sources do not fully describe.

Exploitation context

No CISA KEV listing is present, and the provided sources do not report active exploitation. The issue originated from syzbot testing, indicating automated discovery rather than documented in-the-wild abuse.

Researcher notes

The record identifies an out-of-bounds read in orangefs_debug_write and references multiple stable commits. No CWE, CVSS, exploitability assessment, or detailed impact is provided. Validate against exact kernel branch backports rather than relying only on upstream version numbers.

Mitigation direction

  • Apply Linux kernel updates containing the referenced stable fixes.
  • Use distribution kernel packages when available, including Debian LTS advisories cited.
  • Check vendor or distribution guidance for affected branches and backports.
  • Prioritize systems where OrangeFS support is enabled or loaded.

Validation and detection

  • Inventory Linux kernel versions across servers, appliances, and images.
  • Check whether OrangeFS support is built, available, or loaded.
  • Confirm installed kernels include the relevant stable fix or distribution backport.
  • Review Debian LTS advisories if using Debian packages.
  • Monitor kernel logs for OrangeFS-related warnings or crashes.
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

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CVE-2025-21782 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
1ADP providers
11Source links

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxf7ab093f74bf638ed98fd1115f3efa17e308bb7f, f7ab093f74bf638ed98fd1115f3efa17e308bb7f, f7ab093f74bf638ed98fd1115f3efa17e308bb7f, f7ab093f74bf638ed98fd1115f3efa17e308bb7f, f7ab093f74bf638ed98fd1115f3efa17e308bb7f, f7ab093f74bf638ed98fd1115f3efa17e308bb7f, f7ab093f74bf638ed98fd1115f3efa17e308bb7f, f7ab093f74bf638ed98fd1115f3efa17e308bb7funaffected
LinuxLinux4.6, 0, 5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.79, 6.12.16, 6.13.4, 6.14affected
Weakness

CWE details

No CWE listed

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