Description
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Published: 2026-05-08
Score: 7.0 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Linux kernel to a release containing the commit that removes the mutex usage in ncm_set_alt and introduces the boolean flag.
  • Disable or unload the ncm gadget module if USB NCM functionality is not required, either by editing the kernel configuration or by using modprobe -r at runtime.
  • Monitor kernel logs (e.g., dmesg or /var/log/kern.log) for “sleeping function called from invalid context” messages or kernel panics linked to USB gadget drivers and apply the patch as soon as an updated kernel becomes available.

Generated by OpenCVE AI on May 26, 2026 at 17:51 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: Fix atomic context locking issue The ncm_set_alt function was holding a mutex to protect against races with configfs, which invokes the might-sleep function inside an atomic context. Remove the struct net_device pointer from the f_ncm_opts structure to eliminate the contention. The connection state is now managed by a new boolean flag to preserve the use-after-free fix from commit 6334b8e4553c ("usb: gadget: f_ncm: Fix UAF ncm object at re-bind after usb ep transport error"). BUG: sleeping function called from invalid context Call Trace: dump_stack_lvl+0x83/0xc0 dump_stack+0x14/0x16 __might_resched+0x389/0x4c0 __might_sleep+0x8e/0x100 ... __mutex_lock+0x6f/0x1740 ... ncm_set_alt+0x209/0xa40 set_config+0x6b6/0xb40 composite_setup+0x734/0x2b40 ... This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Title usb: gadget: f_ncm: Fix atomic context locking issue kernel: usb: gadget: f_ncm: Fix atomic context locking issue

Tue, 26 May 2026 13:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-667
CPEs cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Sat, 09 May 2026 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362

Sat, 09 May 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-663
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Fri, 08 May 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362

Fri, 08 May 2026 14:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: Fix atomic context locking issue The ncm_set_alt function was holding a mutex to protect against races with configfs, which invokes the might-sleep function inside an atomic context. Remove the struct net_device pointer from the f_ncm_opts structure to eliminate the contention. The connection state is now managed by a new boolean flag to preserve the use-after-free fix from commit 6334b8e4553c ("usb: gadget: f_ncm: Fix UAF ncm object at re-bind after usb ep transport error"). BUG: sleeping function called from invalid context Call Trace: dump_stack_lvl+0x83/0xc0 dump_stack+0x14/0x16 __might_resched+0x389/0x4c0 __might_sleep+0x8e/0x100 ... __mutex_lock+0x6f/0x1740 ... ncm_set_alt+0x209/0xa40 set_config+0x6b6/0xb40 composite_setup+0x734/0x2b40 ...
Title usb: gadget: f_ncm: Fix atomic context locking issue
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: REJECTED

Assigner: Linux

Published:

Updated: 2026-06-17T18:25:34.243Z

Reserved: 2026-05-01T14:12:56.008Z

Link: CVE-2026-43423

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Rejected

Published: 2026-05-08T15:16:54.390

Modified: 2026-06-17T19:17:50.973

Link: CVE-2026-43423

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-05-08T00:00:00Z

Links: CVE-2026-43423 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-26T18:00:14Z

Weaknesses
  • CWE-663

    Use of a Non-reentrant Function in a Concurrent Context