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NVD / CVE Program· CNA Linux

CVE-2023-53034: ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans

HighCVSS 7.1 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.30% (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 0df2e03e4620548b41891b4e0d1bd9d2e0d8a39a, 2429bdf26a0f3950fdd996861e9c1a3873af1dbe, 36d32cfb00d42e865396424bb5d340fc0a28870d; azl3 kernel 6.6.85.1-4 on Azure Linux 3.0 6.6.92.2-1.

Low priority for now. Upgrade to Linux Linux 0df2e03e4620548b41891b4e0d1bd9d2e0d8a39a, 2429bdf26a0f3950fdd996861e9c1a3873af1dbe, 36d32cfb00d42e865396424bb5d340fc0a28870d; azl3 kernel 6.6.85.1-4 on Azure Linux 3.0 6.6.92.2-1 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: ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans There is a kernel API ntb_mw_clear_trans() would pass 0 to both addr and size. This would make xlate_pos negative. [ 23.734156] switchtec switchtec0: MW 0: part 0 addr 0x0000000000000000 size 0x0000000000000000 [ 23.734158] ================================================================================ [ 23.734172] UBSAN: shift-out-of-bounds in drivers/ntb/hw/mscc/ntb_hw_switchtec.c:293:7 [ 23.734418] shift exponent -1 is negative Ensuring xlate_pos is a positive or zero before BIT.

Published
Apr 16, 2025
Updated
Aug 5, 2026
EPSS
0.3% · 23th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.1
CNA · Linux
7.1
agree

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

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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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

    • 4.16affected
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before f56951f211f181410a383d305e8d370993e45294affected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before 5b6857bb3bfb0dae17fab1e42c1e82c204a508b1affected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before 2429bdf26a0f3950fdd996861e9c1a3873af1dbeaffected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before 7ed22f8d8be26225a78cf5e85b2036421a6bf2d5affected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before c61a3f2df162ba424be0141649a9ef5f28eaccc1affected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before cb153bdc1812a3375639ed6ca5f147eaefb65349affected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before 36d32cfb00d42e865396424bb5d340fc0a28870daffected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before 0df2e03e4620548b41891b4e0d1bd9d2e0d8a39aaffected · git
    • 1e2fd202f8593985cdadca32e0c322f98e7fe7cb and later · before de203da734fae00e75be50220ba5391e7beecdf9affected · git
Affected versions · NVD (8)

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

  • linux linux kernel4.16 and later · before 5.4.292
  • linux linux kernel5.5 and later · before 5.10.236
  • linux linux kernel5.11 and later · before 5.15.180
  • linux linux kernel5.16 and later · before 6.1.134
  • linux linux kernel6.2 and later · before 6.6.87
  • linux linux kernel6.7 and later · before 6.12.23
  • linux linux kernel6.13 and later · before 6.13.11
  • linux linux kernel6.14 and later · before 6.14.2

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-124.38.1.el10_16.12.0-124.38.1.el10_1
AlmaLinux:10kernel-docbefore 6.12.0-124.38.1.el10_16.12.0-124.38.1.el10_1
AlmaLinux:9kernelbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.34.1.el9_75.14.0-611.34.1.el9_7

+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-2024-58092Apr 16, 2025 · nfsd: fix legacy client tracking initialization
    22Monitor
  • ← EarlierCVE-2025-22021Apr 16, 2025 · netfilter: socket: Lookup orig tuple for IPv6 SNAT
    22Monitor
  • Later →CVE-2024-58094Apr 16, 2025 · jfs: add check read-only before truncation in jfs_truncate_nolock()
    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 Linux0df2e03e4620548b41891b4e0d1bd9d2e0d8a39aVendor (CNA)
Linux Linux2429bdf26a0f3950fdd996861e9c1a3873af1dbeVendor (CNA)
Linux Linux36d32cfb00d42e865396424bb5d340fc0a28870dVendor (CNA)
Linux Linux5b6857bb3bfb0dae17fab1e42c1e82c204a508b1Vendor (CNA)
Linux Linux7ed22f8d8be26225a78cf5e85b2036421a6bf2d5Vendor (CNA)
Linux Linuxc61a3f2df162ba424be0141649a9ef5f28eaccc1Vendor (CNA)
Linux Linuxcb153bdc1812a3375639ed6ca5f147eaefb65349Vendor (CNA)
Linux Linuxde203da734fae00e75be50220ba5391e7beecdf9Vendor (CNA)
Linux Linuxf56951f211f181410a383d305e8d370993e45294Vendor (CNA)
azl3 kernel 6.6.85.1-4 on Azure Linux 3.06.6.92.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:kernel5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.34.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-abi-stablelists6.12.0-124.38.1.el10_1 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-doc6.12.0-124.38.1.el10_1 · AlmaLinux:10Package registry (OSV)
debian:linux6.1.135-1 · Debian:12Package registry (OSV)
debian:linux-6.16.1.137-1~deb11u1 · Debian:11Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.50.1.150600.12.22.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.50.1 · openSUSE:Leap 15.6Package registry (OSV)

+31

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
none
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
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

ATT&CK techniques

—

References

Show all references (10 more)

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

All records