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NVD / CVE Program· CNA Linux

CVE-2023-52805: jfs: fix array-index-out-of-bounds in diAlloc

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 05d9ea1ceb62a55af6727a69269a4fd310edf483, 1708d0a9917fea579cc9da3d87b154285abd2cd8, 1ba7df5457dc1c1071c5f92ac11323533a6430e1.

Low priority for now. Upgrade to Linux Linux 05d9ea1ceb62a55af6727a69269a4fd310edf483, 1708d0a9917fea579cc9da3d87b154285abd2cd8, 1ba7df5457dc1c1071c5f92ac11323533a6430e1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: jfs: fix array-index-out-of-bounds in diAlloc Currently there is not check against the agno of the iag while allocating new inodes to avoid fragmentation problem. Added the check which is required.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
May 21, 2024
Updated
Aug 5, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · Linux
7.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-52805

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 4.14.331
  • linux linux kernel4.15 and later · before 4.19.300
  • linux linux kernel4.20 and later · before 5.4.262
  • linux linux kernel5.5 and later · before 5.10.202
  • linux linux kernel5.11 and later · before 5.15.140
  • linux linux kernel5.16 and later · before 6.1.64
  • linux linux kernel6.2 and later · before 6.5.13
  • linux linux kernel6.6 and later · before 6.6.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 2308d0fb0dc32446b4e6ca37cd09c30374bb64e9affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before cf7e3e84df36a9953796c737f080712f631d7083affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 7467ca10a5ff09b0e87edf6c4d2a4bfdee69cf2caffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 1ba7df5457dc1c1071c5f92ac11323533a6430e1affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 64f062baf202b82f54987a3f614a6c8f3e466641affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 8c68af2af697ba2ba3b138be0c6d72e2ce3a3d6daffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 665b44e55c2767a4f899c3b18f49e9e1c9983777affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 1708d0a9917fea579cc9da3d87b154285abd2cd8affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 05d9ea1ceb62a55af6727a69269a4fd310edf483affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.64-16.1.64-1
Debian:13linuxbefore 6.6.8-16.6.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2023-52803May 21, 2024 · SUNRPC: Fix RPC client cleaned up the freed pipefs dentries
    22Monitor
  • ← EarlierCVE-2023-52804May 21, 2024 · fs/jfs: Add validity check for db_maxag and db_agpref
    31Monitor
  • Later →CVE-2023-52806May 21, 2024 · ALSA: hda: Fix possible null-ptr-deref when assigning a stream
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux05d9ea1ceb62a55af6727a69269a4fd310edf483Vendor (CNA)
Linux Linux1708d0a9917fea579cc9da3d87b154285abd2cd8Vendor (CNA)
Linux Linux1ba7df5457dc1c1071c5f92ac11323533a6430e1Vendor (CNA)
Linux Linux2308d0fb0dc32446b4e6ca37cd09c30374bb64e9Vendor (CNA)
Linux Linux64f062baf202b82f54987a3f614a6c8f3e466641Vendor (CNA)
Linux Linux665b44e55c2767a4f899c3b18f49e9e1c9983777Vendor (CNA)
Linux Linux7467ca10a5ff09b0e87edf6c4d2a4bfdee69cf2cVendor (CNA)
Linux Linux8c68af2af697ba2ba3b138be0c6d72e2ce3a3d6dVendor (CNA)
Linux Linuxcf7e3e84df36a9953796c737f080712f631d7083Vendor (CNA)
debian:linux6.1.64-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2021-475483 days apartethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
    39Monitor
  • CVE-2023-2008403 days apartKernel: udmabuf: improper validation of array index leading to local privilege escalation
    32Monitor
  • CVE-2023-527680 days apartwifi: wilc1000: use vmm_table as array in wilc struct
    31Monitor
  • CVE-2023-527990 days apartjfs: fix array-index-out-of-bounds in dbFindLeaf
    31Monitor
  • CVE-2023-528180 days apartdrm/amd: Fix UBSAN array-index-out-of-bounds for SMU7
    31Monitor
  • CVE-2023-528350 days apartperf/core: Bail out early if the request AUX area is out of bound
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-129 · Improper Validation of Array Index

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records