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NVD / CVE Program· CNA Linux

CVE-2025-68287: usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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).
  • Fixed version: Linux Linux 467add9db13219101f14b6cc5477998b4aaa5fe2, 47de14d741cc4057046c9e2f33df1f7828254e6c, 67192e8cb7f941b5bba91e4bb290683576ce1607; azl3 kernel 6.6.117.1-1 on Azure Linux 3.0 6.6.119.3-1.

Low priority for now. Upgrade to Linux Linux 467add9db13219101f14b6cc5477998b4aaa5fe2, 47de14d741cc4057046c9e2f33df1f7828254e6c, 67192e8cb7f941b5bba91e4bb290683576ce1607; azl3 kernel 6.6.117.1-1 on Azure Linux 3.0 6.6.119.3-1 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: usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths This patch addresses a race condition caused by unsynchronized execution of multiple call paths invoking `dwc3_remove_requests()`, leading to premature freeing of USB requests and subsequent crashes. Three distinct execution paths interact with `dwc3_remove_requests()`: Path 1: Triggered via `dwc3_gadget_reset_interrupt()` during USB reset handling. The call stack includes: - `dwc3_ep0_reset_state()` - `dwc3_ep0_stall_and_restart()` - `dwc3_ep0_out_start()` - `dwc3_remove_requests()` - `dwc3_gadget_del_and_unmap_request()` Path 2: Also initiated from `dwc3_gadget_reset_interrupt()`, but through `dwc3_stop_active_transfers()`. The call stack includes: - `dwc3_stop_active_transfers()` - `dwc3_remove_requests()` - `dwc3_gadget_del_and_unmap_request()` Path 3: Occurs independently during `adb root` execution, which triggers USB function unbind and bind operations. The sequence includes: - `gserial_disconnect()` - `usb_ep_disable()` - `dwc3_gadget_ep_disable()` - `dwc3_remove_requests()` with `-ESHUTDOWN` status Path 3 operates asynchronously and lacks synchronization with Paths 1 and 2. When Path 3 completes, it disables endpoints and frees 'out' requests. If Paths 1 or 2 are still processing these requests, accessing freed memory leads to a crash due to use-after-free conditions. To fix this added check for request completion and skip processing if already completed and added the request status for ep0 while queue.

—No exploit Fix available
Published
Dec 16, 2025
Updated
Oct 13, 2026
EPSS
0.2% · 14th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
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.

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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.

—

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

    • 3.2affected
    • 72246da40f3719af3bfd104a2365b32537c27d83 and later · before 467add9db13219101f14b6cc5477998b4aaa5fe2affected · git
    • 72246da40f3719af3bfd104a2365b32537c27d83 and later · before 67192e8cb7f941b5bba91e4bb290683576ce1607affected · git
    • 72246da40f3719af3bfd104a2365b32537c27d83 and later · before 47de14d741cc4057046c9e2f33df1f7828254e6caffected · git
    • 72246da40f3719af3bfd104a2365b32537c27d83 and later · before afc0e34f161ce61ad351303c46eb57bd44b8b090affected · git
    • 72246da40f3719af3bfd104a2365b32537c27d83 and later · before 7cfb62888eba292fa35cd9ddbd28ce595f60e139affected · git
    • 72246da40f3719af3bfd104a2365b32537c27d83 and later · before fa5eaf701e576880070b60922200557ae4aa54e1affected · git
    • 72246da40f3719af3bfd104a2365b32537c27d83 and later · before e4037689a366743c4233966f0e74bc455820d316affected · git
    • before 3.2not affected · semver
    • 5.10.247 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
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-124.27.1.el10_16.12.0-124.27.1.el10_1
AlmaLinux:10kernel-docbefore 6.12.0-124.27.1.el10_16.12.0-124.27.1.el10_1
AlmaLinux:9kernelbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.24.1.el9_75.14.0-611.24.1.el9_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-68285Dec 16, 2025 · libceph: fix potential use-after-free in have_mon_and_osd_map()
    39Monitor
  • ← EarlierCVE-2025-68286Dec 16, 2025 · drm/amd/display: Check NULL before accessing
    31Monitor
  • Later →CVE-2025-68288Dec 16, 2025 · usb: storage: Fix memory leak in USB bulk transport
    0Monitor

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 Linux467add9db13219101f14b6cc5477998b4aaa5fe2Vendor (CNA)
Linux Linux47de14d741cc4057046c9e2f33df1f7828254e6cVendor (CNA)
Linux Linux67192e8cb7f941b5bba91e4bb290683576ce1607Vendor (CNA)
Linux Linux7cfb62888eba292fa35cd9ddbd28ce595f60e139Vendor (CNA)
Linux Linuxafc0e34f161ce61ad351303c46eb57bd44b8b090Vendor (CNA)
Linux Linuxe4037689a366743c4233966f0e74bc455820d316Vendor (CNA)
Linux Linuxfa5eaf701e576880070b60922200557ae4aa54e1Vendor (CNA)
azl3 kernel 6.6.117.1-1 on Azure Linux 3.06.6.119.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:kernel5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.24.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-abi-stablelists6.12.0-124.27.1.el10_1 · AlmaLinux:10Package registry (OSV)
almalinux:kernel-doc6.12.0-124.27.1.el10_1 · AlmaLinux:10Package registry (OSV)
debian:linux6.1.159-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-debug-devel0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-debug-devel-matched0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-debuginfo0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-devel0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-64k-devel-matched0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-debug-debuginfo0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-debug-devel0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:kernel-debug-devel-matched0:6.12.0-124.27.1.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)

+4

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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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 (6 more)

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

All records