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CVE Record

CVE-2024-56598: jfs: array-index-out-of-bounds fix in dtReadFirst

In the Linux kernel, the following vulnerability has been resolved: jfs: array-index-out-of-bounds fix in dtReadFirst The value of stbl can be sometimes out of bounds due to a bad filesystem. Added a check with appopriate return of error code in that case.

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A malformed JFS filesystem can make the Linux kernel access an array outside its valid bounds. Because this occurs in kernel code, the stated impact includes possible loss of confidentiality, integrity, and availability. Exploitation requires local, low-privileged access under the CVSS model; the source does not describe the exact access path.

Executive priority

Treat this as a high-priority kernel maintenance issue on systems using JFS or exposing filesystem handling to less-trusted local users. It is not supported as an active-exploitation emergency. Accelerate vendor-guided patching on exposed hosts, while handling systems without JFS through the normal high-severity remediation cycle.

Technical view

The JFS dtReadFirst function could use an out-of-range stbl value when processing a bad filesystem. The upstream correction validates the value and returns an error when invalid. CVE-2024-56598 is scored CVSS 3.1 7.8 with local access, low complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impacts.

Likely exposure

Exposure concerns systems running affected Linux kernels that process JFS filesystems. The supplied version data spans multiple kernel branches but is insufficient for reliable package-level conclusions because distributions may backport fixes. Systems without JFS use or without an affected kernel are less likely to be exposed.

Exploitation context

The bundle reports no CISA KEV listing and provides no cited evidence of active exploitation or a public exploit. The CVSS vector describes a local, low-privileged attack model. Whether an attacker can practically present or influence a bad JFS filesystem depends on system configuration and is not established by the supplied evidence.

Researcher notes

The central condition is an unchecked stbl array index in JFS dtReadFirst when processing a bad filesystem. Upstream stable commits exist across several branches. The supplied affected-version representation mixes release and commit information, so researchers should verify branch ancestry and distribution backports before declaring a specific build vulnerable or fixed.

Mitigation direction

  • Apply a vendor-supported kernel update containing the applicable upstream stable fix.
  • Check distribution advisories for package-specific fixed versions and required restart actions.
  • Prioritize hosts using JFS or permitting untrusted access to JFS-backed data.
  • Where operationally feasible, prevent untrusted users from introducing or accessing JFS filesystems until patched.

Validation and detection

  • Inventory running kernel versions and determine whether JFS is enabled or used.
  • Map each vendor kernel package to its distribution advisory for CVE-2024-56598.
  • Confirm the running kernel, not merely the installed package, contains the fix.
  • Verify vendor changelogs or source include the applicable bounds-check correction.
  • Retest legitimate JFS workloads after updating.
Prepared
Confidence
medium
Sources
6

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.

cwe · low confidence lookup

CWE-129: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2024-56598 mapping review

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

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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.

2CVSS vectors
3Timeline events
2ADP providers
10Source links

SSVC decision data

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

CVSS vector scores

2 official scores

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:H1.85.9CISA-ADP
7.1CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H1.85.2Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-56598Attack 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
cvssV3_1other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2unaffected
LinuxLinux2.6.12, 0, 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.66, 6.12.5, 6.13affected
Weakness

CWE details

CWE-129

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

CWE-129 · source CWE mapping

Improper Validation of Array Index

Improper Validation of Array Index represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs