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NVD / CVE Program· CNA Linux

CVE-2023-54104: mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()

HighCVSS 7.8 · v3.1—No exploit Fix available

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: 0.16% (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 1f09d67d390647f83f8f9d26382b0daa43756e6f, 49e57caf967a969f6b955c88805f2d160910aa12, c6abce60338aa2080973cd95be0aedad528bb41f.

Low priority for now. Upgrade to Linux Linux 1f09d67d390647f83f8f9d26382b0daa43756e6f, 49e57caf967a969f6b955c88805f2d160910aa12, c6abce60338aa2080973cd95be0aedad528bb41f 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: mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op() 'op-cs' is copied in 'fun->mchip_number' which is used to access the 'mchip_offsets' and the 'rnb_gpio' arrays. These arrays have NAND_MAX_CHIPS elements, so the index must be below this limit. Fix the sanity check in order to avoid the NAND_MAX_CHIPS value. This would lead to out-of-bound accesses.

Published
Dec 24, 2025
Updated
Aug 5, 2026
EPSS
0.1% · 5th percentile
CWE
—

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 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

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

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Follow CVE-2023-54104

When you'll hear from us

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  • 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.

—

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

    • 5.9affected
    • 54309d65776755bcdb9dcf3744cd764fc1e254ea and later · before 1f09d67d390647f83f8f9d26382b0daa43756e6faffected · git
    • 54309d65776755bcdb9dcf3744cd764fc1e254ea and later · before eb7a5e4d14c8659cb97db6863316280e15f67209affected · git
    • 54309d65776755bcdb9dcf3744cd764fc1e254ea and later · before f4b700c71802c81e6f9dce362ee7a0312c8377baaffected · git
    • 54309d65776755bcdb9dcf3744cd764fc1e254ea and later · before 49e57caf967a969f6b955c88805f2d160910aa12affected · git
    • 54309d65776755bcdb9dcf3744cd764fc1e254ea and later · before c6abce60338aa2080973cd95be0aedad528bb41faffected · git
    • before 5.9not affected · semver
    • 5.10.190 and later · up to and including 5.10.*not affected · semver
    • 5.15.126 and later · up to and including 5.15.*not affected · semver
    • 6.1.45 and later · up to and including 6.1.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.52-16.1.52-1
Debian:13linuxbefore 6.4.11-16.4.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-54101Dec 24, 2025 · driver: soc: xilinx: use _safe loop iterator to avoid a use after free
    0Monitor
  • ← EarlierCVE-2023-54102Dec 24, 2025 · scsi: lpfc: Prevent lpfc_debugfs_lockstat_write() buffer overflow
    0Monitor
  • Later →CVE-2023-54105Dec 24, 2025 · can: isotp: check CAN address family in isotp_bind()
    0Monitor

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 Linux1f09d67d390647f83f8f9d26382b0daa43756e6fVendor (CNA)
Linux Linux49e57caf967a969f6b955c88805f2d160910aa12Vendor (CNA)
Linux Linuxc6abce60338aa2080973cd95be0aedad528bb41fVendor (CNA)
Linux Linuxeb7a5e4d14c8659cb97db6863316280e15f67209Vendor (CNA)
Linux Linuxf4b700c71802c81e6f9dce362ee7a0312c8377baVendor (CNA)
debian:linux6.1.52-1 · 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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)

—

CVSS vector

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

nvd-secondary

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (4 more)

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

All records