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NVD / CVE Program· CNA Linux

CVE-2023-52748: f2fs: avoid format-overflow warning

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: 0.24% (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 3eebe636cac53886bd5d1cdd55e082ec9e84983f, 526dd7540a09ecf87b5f54f3ab4e0a2528f25a79, 6fca08fd3085253b48fcb1bd243a0a5e18821a00.

Low priority for now. Upgrade to Linux Linux 3eebe636cac53886bd5d1cdd55e082ec9e84983f, 526dd7540a09ecf87b5f54f3ab4e0a2528f25a79, 6fca08fd3085253b48fcb1bd243a0a5e18821a00 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: f2fs: avoid format-overflow warning With gcc and W=1 option, there's a warning like this: fs/f2fs/compress.c: In function ‘f2fs_init_page_array_cache’: fs/f2fs/compress.c:1984:47: error: ‘%u’ directive writing between 1 and 7 bytes into a region of size between 5 and 8 [-Werror=format-overflow=] 1984 | sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev), MINOR(dev)); | ^~ String "f2fs_page_array_entry-%u:%u" can up to 35. The first "%u" can up to 4 and the second "%u" can up to 7, so total size is "24 + 4 + 7 = 35". slab_name's size should be 35 rather than 32.

Published
May 21, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 16th 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
partial

Vulnrichment: CISA's decision-tree inputs.

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-2023-52748

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.

VendorProduct
linuxlinux kernel

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

    • 5.10affected
    • 31083031709eea6530f0551d59eecdb2e68265ef and later · before c041f5ddef00c731c541e00bc8ae97b8c84c682faffected · git
    • 31083031709eea6530f0551d59eecdb2e68265ef and later · before e4088d7d8f1123006d46a42edf51b8c960a58ef9affected · git
    • 31083031709eea6530f0551d59eecdb2e68265ef and later · before 526dd7540a09ecf87b5f54f3ab4e0a2528f25a79affected · git
    • 31083031709eea6530f0551d59eecdb2e68265ef and later · before 6fca08fd3085253b48fcb1bd243a0a5e18821a00affected · git
    • 31083031709eea6530f0551d59eecdb2e68265ef and later · before 3eebe636cac53886bd5d1cdd55e082ec9e84983faffected · git
    • 31083031709eea6530f0551d59eecdb2e68265ef and later · before e0d4e8acb3789c5a8651061fbab62ca24a45c063affected · git
    • before 5.10not affected · semver
    • 5.10.202 and later · up to and including 5.10.*not affected · semver
    • 5.15.140 and later · up to and including 5.15.*not affected · semver
Affected versions · NVD (5)

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

  • linux linux kernel5.10 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

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-2023-52746May 21, 2024 · xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr()
    10Monitor
  • ← EarlierCVE-2023-52747May 21, 2024 · IB/hfi1: Restore allocated resources on failed copyout
    22Monitor
  • Later →CVE-2023-52749May 21, 2024 · spi: Fix null dereference on suspend
    18Monitor

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 Linux3eebe636cac53886bd5d1cdd55e082ec9e84983fVendor (CNA)
Linux Linux526dd7540a09ecf87b5f54f3ab4e0a2528f25a79Vendor (CNA)
Linux Linux6fca08fd3085253b48fcb1bd243a0a5e18821a00Vendor (CNA)
Linux Linuxc041f5ddef00c731c541e00bc8ae97b8c84c682fVendor (CNA)
Linux Linuxe0d4e8acb3789c5a8651061fbab62ca24a45c063Vendor (CNA)
Linux Linuxe4088d7d8f1123006d46a42edf51b8c960a58ef9Vendor (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.

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)

CWE-787 · Out-of-bounds Write

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.

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

References

Show all references (5 more)

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

All records