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NVD / CVE Program· CNA Linux

CVE-2023-52458: block: add check that partition length needs to be aligned with block size

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.23% (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 5010c27120962c85d2f421d2cf211791c9603503, 6f64f866aa1ae6975c95d805ed51d7e9433a0016, 8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62.

Low priority for now. Upgrade to Linux Linux 5010c27120962c85d2f421d2cf211791c9603503, 6f64f866aa1ae6975c95d805ed51d7e9433a0016, 8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62 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: block: add check that partition length needs to be aligned with block size Before calling add partition or resize partition, there is no check on whether the length is aligned with the logical block size. If the logical block size of the disk is larger than 512 bytes, then the partition size maybe not the multiple of the logical block size, and when the last sector is read, bio_truncate() will adjust the bio size, resulting in an IO error if the size of the read command is smaller than the logical block size.If integrity data is supported, this will also result in a null pointer dereference when calling bio_integrity_free.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 23, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 14th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 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.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
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  • 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 5.10.215
  • linux linux kernel5.11.0 and later · before 5.15.148
  • linux linux kernel5.16.0 and later · before 6.1.75
  • linux linux kernel6.2.0 and later · before 6.6.14
  • linux linux kernel6.7.0 and later · before 6.7.2

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

    • 4.10affected
    • 633395b67bb222f85bb8f825c7751a54b9ec84ee and later · before 8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62affected · git
    • 633395b67bb222f85bb8f825c7751a54b9ec84ee and later · before 5010c27120962c85d2f421d2cf211791c9603503affected · git
    • 633395b67bb222f85bb8f825c7751a54b9ec84ee and later · before ef31cc87794731ffcb578a195a2c47d744e25fb8affected · git
    • 633395b67bb222f85bb8f825c7751a54b9ec84ee and later · before cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8affected · git
    • 633395b67bb222f85bb8f825c7751a54b9ec84ee and later · before bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5affected · git
    • 633395b67bb222f85bb8f825c7751a54b9ec84ee and later · before 6f64f866aa1ae6975c95d805ed51d7e9433a0016affected · git
    • before 4.10not affected · semver
    • 5.10.215 and later · up to and including 5.10.*not affected · semver
    • 5.15.148 and later · up to and including 5.15.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.3.0-427.28.1.el9_47.3.0-427.28.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.28.1.el9_45.14.0-427.28.1.el9_4

+96

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-2024-26598Feb 23, 2024 · KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
    31Monitor
  • ← EarlierCVE-2024-26599Feb 23, 2024 · pwm: Fix out-of-bounds access in of_pwm_single_xlate()
    31Monitor
  • Later →CVE-2023-52464Feb 23, 2024 · EDAC/thunderx: Fix possible out-of-bounds string access
    31Monitor

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 Linux5010c27120962c85d2f421d2cf211791c9603503Vendor (CNA)
Linux Linux6f64f866aa1ae6975c95d805ed51d7e9433a0016Vendor (CNA)
Linux Linux8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62Vendor (CNA)
Linux Linuxbcdc288e7bc008daf38ef0401b53e4a8bb61bbe5Vendor (CNA)
Linux Linuxcb16cc1abda18a9514106d2ac8c8d7abc0be5ed8Vendor (CNA)
Linux Linuxef31cc87794731ffcb578a195a2c47d744e25fb8Vendor (CNA)
almalinux:bpftool7.3.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.28.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.76-1 · Debian:12Package registry (OSV)
debian:linux-5.105.10.216-1~deb10u1 · Debian:10Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.7.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-azure6.4.0-150600.8.5.4 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.7.3.150600.12.2.7 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.7.4 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.7.1 · openSUSE:Leap 15.6Package registry (OSV)

+27

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.

No nightly-computed relations.

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

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

Change log

  1. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records