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CVE Record

CVE-2024-27032: f2fs: fix to avoid potential panic during recovery

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid potential panic during recovery During recovery, if FAULT_BLOCK is on, it is possible that f2fs_reserve_new_block() will return -ENOSPC during recovery, then it may trigger panic. Also, if fault injection rate is 1 and only FAULT_BLOCK fault type is on, it may encounter deadloop in loop of block reservation. Let's change as below to fix these issues: - remove bug_on() to avoid panic. - limit the loop count of block reservation to avoid potential deadloop.

MediumCVSS 6.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2024-27032 is a Linux kernel F2FS recovery bug that can trigger a kernel panic or recovery loop under specific fault-injection conditions. The business impact is mainly service disruption on affected Linux hosts using F2FS, with limited evidence of broad real-world exploitability.

Executive priority

Treat as a targeted stability and availability risk, not an emergency internet-facing issue. Patch through normal kernel maintenance, with higher priority for F2FS systems, shared platforms, or environments where local users can influence filesystem recovery conditions.

Technical view

The flaw is in F2FS recovery handling when FAULT_BLOCK fault injection is active. f2fs_reserve_new_block() can return -ENOSPC, triggering panic, and certain fault-injection settings can cause a dead loop. The fix removes a BUG_ON path and limits block reservation looping.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel versions with F2FS enabled, especially environments using or permitting kernel fault injection. Systems not using F2FS, not exposing local access, or already carrying the stable kernel fixes appear less exposed based on the bundle.

Exploitation context

The CVSS vector indicates local access, low privileges, high attack complexity, no user interaction, and potential high confidentiality and availability impact. The source bundle says KEV is false and provides no evidence of active exploitation or public weaponization.

Researcher notes

Evidence is incomplete on practical exploit paths beyond the CVSS local, low-privilege model and the described FAULT_BLOCK recovery condition. The source names the corrective code behavior but does not provide distribution-specific fixed package versions or exploitation telemetry.

Mitigation direction

  • Apply vendor kernel updates containing the referenced stable F2FS fixes.
  • Prioritize affected Linux hosts that use F2FS for mounted filesystems.
  • Avoid enabling FAULT_BLOCK fault injection on production systems unless required.
  • Check distribution advisories for backported fixes and supported kernel packages.
  • Reboot into the fixed kernel after patching, where required.

Validation and detection

  • Inventory Linux kernel versions and identify hosts using F2FS.
  • Confirm whether kernel fault injection features are enabled or accessible.
  • Verify installed kernels include the referenced stable commits or vendor backports.
  • Review crash logs for F2FS recovery panics or repeated recovery loops.
  • Confirm systems booted into the patched kernel after remediation.
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-2024-27032 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

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.

1CVSS vectors
3Timeline events
2ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.3CVSS 3.1MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H15.2CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

6.3Medium
CVSS 3.1 vector shape for CVE-2024-27032Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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
cvssV3_1other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxb1020a546779139eec5d930e15ce534c1101b89c, 2a7b12d4705bc308cf18eae2b69ec8db34881cc3, b29cc6e29b5e6037e1bcd2b2ac67b7d89acd194c, 956fa1ddc132e028f3b7d4cf17e6bfc8cb36c7fd, 956fa1ddc132e028f3b7d4cf17e6bfc8cb36c7fd, bc1fb291f36dd1d9d667241d9fe30b835dbb8ee8, 9fceaf8182d453639cddb7f4a6877a1e1564de39, 80c69f576ff39d6ae8a6e2107da3dc03b533759c, b4fb0807a1d60f8642a5fd62bd659cd6052eaf97, 6.1.77, 6.6.16, 6.7.4, 4.19.307, 5.4.269, 5.10.210, 5.15.149unaffected
LinuxLinux6.8, 0, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9affected
Weakness

CWE details

No CWE listed

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