In the Linux kernel, the following vulnerability has been resolved:

dibs: initialise dibs->lock in dibs_dev_alloc()

dibs->lock is initialised by dibs_dev_add(), but a dibs device can
already take interrupts before that call: ism_probe() runs
ism_dev_init(), and hence request_irq(), before it calls
dibs_dev_add(). No client can have registered a dmb at that point, so
no dmb interrupt can occur, but a GID event interrupt can, and
ism_handle_irq() takes dibs->lock unconditionally on entry, before it
inspects anything else.

Initialise the lock in dibs_dev_alloc() instead, so that it is valid as
soon as a driver can publish the device to its interrupt handler.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
cc21191b584c6f7836b0f10774f8278b7cbfba10 affected < fe79571f40434b257d68cbfb7b3ae93a794d8a11
cc21191b584c6f7836b0f10774f8278b7cbfba10 affected < 2926031acba100d0c18fcfaa7a2ed29609318848
cc21191b584c6f7836b0f10774f8278b7cbfba10 affected < c27e360545373b7aee9862a5beef3b9fb3df0c25
Linux Linux affected
Version Status Constraints
6.18 affected —
0 unaffected < 6.18
6.18.45 unaffected ≤ 6.18.*
7.1.9 unaffected ≤ 7.1.*
7.2 unaffected ≤ *

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https://git.kernel.org/stable/c/2926031acba100d0c18fcfaa7a2ed29609318848 cve-icon
https://git.kernel.org/stable/c/c27e360545373b7aee9862a5beef3b9fb3df0c25 cve-icon
https://git.kernel.org/stable/c/fe79571f40434b257d68cbfb7b3ae93a794d8a11 cve-icon
History

Sat, 22 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: dibs: initialise dibs->lock in dibs_dev_alloc() dibs->lock is initialised by dibs_dev_add(), but a dibs device can already take interrupts before that call: ism_probe() runs ism_dev_init(), and hence request_irq(), before it calls dibs_dev_add(). No client can have registered a dmb at that point, so no dmb interrupt can occur, but a GID event interrupt can, and ism_handle_irq() takes dibs->lock unconditionally on entry, before it inspects anything else. Initialise the lock in dibs_dev_alloc() instead, so that it is valid as soon as a driver can publish the device to its interrupt handler.
Title dibs: initialise dibs->lock in dibs_dev_alloc()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-22T15:32:02.049Z

Reserved: 2026-08-15T05:44:03.920Z

Link: CVE-2026-74617

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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