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CVE Record

CVE-2024-42299: fs/ntfs3: Update log->page_{mask,bits} if log->page_size changed

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Update log->page_{mask,bits} if log->page_size changed If an NTFS file system is mounted to another system with different PAGE_SIZE from the original system, log->page_size will change in log_replay(), but log->page_{mask,bits} don't change correspondingly. This will cause a panic because "u32 bytes = log->page_size - page_off" will get a negative value in the later read_log_page().

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux NTFS3 bookkeeping error can crash the kernel when replaying the log of an NTFS filesystem previously mounted on a system with a different memory page size. This can interrupt affected workloads. The supplied evidence does not establish remote exploitation or active attacks.

Executive priority

Treat as high priority for systems that routinely mount removable, imported, or cross-architecture NTFS media. Accelerate vendor kernel updates where a crash would disrupt critical services. Systems not using NTFS3, or not handling cross-page-size filesystems, are less likely to encounter the documented condition.

Technical view

In log_replay(), log->page_size can change without updating log->page_mask and log->page_bits. Later, read_log_page() can derive an invalid value from log->page_size minus page_off, causing a kernel panic. Linux stable commits are referenced as fixes across kernel branches.

Likely exposure

Exposure is most likely on Linux systems using NTFS3 to mount filesystems transferred between systems with different PAGE_SIZE values. The supplied affected-version data includes multiple kernel releases but does not define clean version ranges, so exact exposure must be confirmed through distribution advisories or fix-commit presence.

Exploitation context

The CVSS vector characterizes this as local, low-complexity exploitation requiring low privileges and no user interaction. CISA KEV status is false, and the supplied sources provide no evidence of active exploitation. The description establishes a kernel panic; it does not explain the CVSS-rated confidentiality or integrity impacts.

Researcher notes

Validate exposure against actual distribution source because the supplied version representation is ambiguous and vendors may backport fixes. Five Linux stable commits are referenced, apparently covering different maintained branches. No CWE is supplied. Public evidence in the bundle supports a denial-of-service panic but provides no exploit demonstration or active-exploitation claim.

Mitigation direction

  • Upgrade to a vendor-supported kernel containing the appropriate referenced Linux stable fix.
  • Check distribution security guidance for the exact fixed package version.
  • Temporarily avoid cross-system NTFS mounts involving different page sizes where operationally feasible.
  • Restrict untrusted users from supplying or mounting NTFS filesystems where feasible.

Validation and detection

  • Inventory systems using the NTFS3 driver and identify their running kernel versions.
  • Identify NTFS filesystems transferred between systems with different memory page sizes.
  • Confirm the installed kernel contains the applicable referenced stable commit or vendor backport.
  • Review kernel crash records for failures involving log_replay or read_log_page.
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.

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CVE-2024-42299 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
7Source 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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-42299Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxb46acd6a6a627d876898e1c84d3f84902264b445, b46acd6a6a627d876898e1c84d3f84902264b445, b46acd6a6a627d876898e1c84d3f84902264b445, b46acd6a6a627d876898e1c84d3f84902264b445, b46acd6a6a627d876898e1c84d3f84902264b445unaffected
LinuxLinux5.15, 0, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11affected
Weakness

CWE details

No CWE listed

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