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NVD / CVE Program· CNA Linux

CVE-2025-39788: scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE

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: 0.17% (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 01510a9e8222f11cce064410f3c2fcf0756c0a08, 01aad16c2257ab8ff33b152b972c9f2e1af47912, 098b2c8ee208c77126839047b9e6e1925bb35baa.

Low priority for now. Upgrade to Linux Linux 01510a9e8222f11cce064410f3c2fcf0756c0a08, 01aad16c2257ab8ff33b152b972c9f2e1af47912, 098b2c8ee208c77126839047b9e6e1925bb35baa 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: scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE On Google gs101, the number of UTP transfer request slots (nutrs) is 32, and in this case the driver ends up programming the UTRL_NEXUS_TYPE incorrectly as 0. This is because the left hand side of the shift is 1, which is of type int, i.e. 31 bits wide. Shifting by more than that width results in undefined behaviour. Fix this by switching to the BIT() macro, which applies correct type casting as required. This ensures the correct value is written to UTRL_NEXUS_TYPE (0xffffffff on gs101), and it also fixes a UBSAN shift warning: UBSAN: shift-out-of-bounds in drivers/ufs/host/ufs-exynos.c:1113:21 shift exponent 32 is too large for 32-bit type 'int' For consistency, apply the same change to the nutmrs / UTMRL_NEXUS_TYPE write.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 11, 2025
Updated
Oct 19, 2026
EPSS
0.1% · 6th 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 · 0.1%

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  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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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
debiandebian linux

Affected versions

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

  • debian debian linux11.0
  • linux linux kernel5.11 and later · before 5.15.190
  • linux linux kernel5.16 and later · before 6.1.149
  • linux linux kernel5.9 and later · before 5.10.241
  • linux linux kernel6.7 and later · before 6.12.44
  • linux linux kernel6.13 and later · before 6.16.4
  • linux linux kernel6.2 and later · before 6.6.103

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
    • 55f4b1f73631a0817717fe6e98517de51b4c3527 and later · before 01510a9e8222f11cce064410f3c2fcf0756c0a08affected · git
    • 55f4b1f73631a0817717fe6e98517de51b4c3527 and later · before 098b2c8ee208c77126839047b9e6e1925bb35baaaffected · git
    • 55f4b1f73631a0817717fe6e98517de51b4c3527 and later · before c1f025da8f370a015e412b55cbcc583f91de8316affected · git
    • 55f4b1f73631a0817717fe6e98517de51b4c3527 and later · before 6d53b2a134da77eb7fe65c5c7c7a3c193539a78aaffected · git
    • 55f4b1f73631a0817717fe6e98517de51b4c3527 and later · before dc8fb963742f1a38d284946638f9358bdaa0ddeeaffected · git
    • 55f4b1f73631a0817717fe6e98517de51b4c3527 and later · before 5b9f1ef293428ea9c0871d96fcec2a87c4445832affected · git
    • 55f4b1f73631a0817717fe6e98517de51b4c3527 and later · before 01aad16c2257ab8ff33b152b972c9f2e1af47912affected · git
    • before 5.9not affected · semver
    • 5.10.241 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.153-16.1.153-1
Debian:13linuxbefore 6.12.48-16.12.48-1
Debian:14linuxbefore 6.16.5-16.16.5-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-azurebefore 6.4.0-150600.8.58.16.4.0-150600.8.58.1
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.81.3.150600.12.36.36.4.0-150600.23.81.3.150600.12.36.3
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-rtbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-rt_debugbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.81.26.4.0-150600.23.81.2
openSUSE:Leap 15.6kernel-source-azurebefore 6.4.0-150600.8.58.16.4.0-150600.8.58.1
openSUSE:Leap 15.6kernel-source-rtbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.81.16.4.0-150600.23.81.1
openSUSE:Leap 15.6kernel-syms-azurebefore 6.4.0-150600.8.58.16.4.0-150600.8.58.1
openSUSE:Leap 15.6kernel-syms-rtbefore 6.4.0-150600.10.61.16.4.0-150600.10.61.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.81.36.4.0-150600.23.81.3
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_18before 1-150600.13.3.31-150600.13.3.3
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6-RT_Update_18before 1-150600.1.3.11-150600.1.3.1

+37

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-2025-39786Sep 11, 2025 · iio: adc: ad7173: fix channels index for syscalib_mode
    28Monitor
  • ← EarlierCVE-2025-39787Sep 11, 2025 · soc: qcom: mdt_loader: Ensure we don't read past the ELF header
    22Monitor
  • Later →CVE-2025-39789Sep 11, 2025 · crypto: x86/aegis - Add missing error checks
    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 Linux01510a9e8222f11cce064410f3c2fcf0756c0a08Vendor (CNA)
Linux Linux01aad16c2257ab8ff33b152b972c9f2e1af47912Vendor (CNA)
Linux Linux098b2c8ee208c77126839047b9e6e1925bb35baaVendor (CNA)
Linux Linux5b9f1ef293428ea9c0871d96fcec2a87c4445832Vendor (CNA)
Linux Linux6d53b2a134da77eb7fe65c5c7c7a3c193539a78aVendor (CNA)
Linux Linuxc1f025da8f370a015e412b55cbcc583f91de8316Vendor (CNA)
Linux Linuxdc8fb963742f1a38d284946638f9358bdaa0ddeeVendor (CNA)
debian:linux6.1.153-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.81.3.150600.12.36.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source6.4.0-150600.23.81.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms6.4.0-150600.23.81.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-zfcpdump6.4.0-150600.23.81.3 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.81.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-64kb6.4.0-150700.53.25.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-azure6.4.0-150600.8.58.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150600.23.81.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150700.53.25.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.81.3.150600.12.36.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150700.53.25.1.150700.17.17.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7Package registry (OSV)
suse:kernel-docs6.4.0-150600.23.81.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-docs6.4.0-150700.53.25.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_181-150600.13.3.3 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)

+10

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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
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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (9 more)

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

All records