NVD / CVE Program· CNA Linux

CVE-2025-39803: scsi: ufs: core: Remove WARN_ON_ONCE() call from ufshcd_uic_cmd_compl()

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: 0.14% (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 c0cc24c139e0f62859dbf88e050ba074cd93988f, e5203d89d59bfcbe1f348aa0d2dc4449a8ba644c.

Low priority for now. Upgrade to Linux Linux c0cc24c139e0f62859dbf88e050ba074cd93988f, e5203d89d59bfcbe1f348aa0d2dc4449a8ba644c 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: core: Remove WARN_ON_ONCE() call from ufshcd_uic_cmd_compl() The UIC completion interrupt may be disabled while an UIC command is being processed. When the UIC completion interrupt is reenabled, an UIC interrupt is triggered and the WARN_ON_ONCE(!cmd) statement is hit. Hence this patch that removes this kernel warning.

HighCVSS 7.8 · v3.1—No exploit Fix available

BDU:2026-12423

Published: Sep 15, 2025
Updated: Oct 19, 2026
EPSS: 0.1% · 3th percentile
CWE: CWE-617

Report tools

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Action score

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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

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

linux linux kernel6.13 and later · before 6.16.4
linux linux kernel6.17

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
- 6.13affected
- fcd8b0450a9acbf3f0e88d749a72ef932df97663 and later · before c0cc24c139e0f62859dbf88e050ba074cd93988faffected · git
- fcd8b0450a9acbf3f0e88d749a72ef932df97663 and later · before e5203d89d59bfcbe1f348aa0d2dc4449a8ba644caffected · git
- before 6.13not affected · semver
- 6.16.4 and later · up to and including 6.16.*not affected · semver
- 6.17 and laternot affected · original_commit_for_fix

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:14	linux	before 6.16.5-1	6.16.5-1

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-2025-39801Sep 15, 2025 · usb: dwc3: Remove WARN_ON for device endpoint command timeouts
22Monitor
← EarlierCVE-2025-39802Sep 15, 2025 · lib/crypto: arm/poly1305: Fix register corruption in no-SIMD contexts
31Monitor
Later →CVE-2025-39804Sep 15, 2025 · lib/crypto: arm64/poly1305: Fix register corruption in no-SIMD contexts
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 / package	Fixed version	Source
Linux Linux	c0cc24c139e0f62859dbf88e050ba074cd93988f	Vendor (CNA)
Linux Linux	e5203d89d59bfcbe1f348aa0d2dc4449a8ba644c	Vendor (CNA)
debian:linux	6.16.5-1 · Debian:14	Package 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.

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.

CVE-2026-31739228 days apartcrypto: tegra - Add missing CRYPTO_ALG_ASYNC
35Monitor
CVE-2026-52952282 days apartiommu: Fix WARN_ON in __iommu_group_set_domain_nofail() due to reset
35Monitor
CVE-2026-31398200 days apartmm/rmap: fix incorrect pte restoration for lazyfree folios
31Monitor
CVE-2026-46117255 days apartRDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss()
31Monitor
CVE-2023-52621538 days apartbpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
31Monitor
CVE-2026-46027254 days apartnet/smc: avoid early lgr access in smc_clc_wait_msg
30Monitor

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-617 · Reachable Assertion

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

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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

References

git.kernel.org/stable/c/c0cc24c139e0f62859dbf88e050ba074cd93988f

Show all references (1 more)

git.kernel.org/stable/c/e5203d89d59bfcbe1f348aa0d2dc4449a8ba644c

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

All records