CVE-2026-74617dibs: initialise dibs->lock in dibs_dev_alloc()
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from cc21191b584c6f7836b0f10774f8278b7cbfba10 before fe79571f40434b257d68cbfb7b3ae93a794d8a11; from cc21191b584c6f7836b0f10774f8278b7cbfba10 before 2926031acba100d0c18fcfaa7a2ed29609318848; from cc21191b584c6f7836b0f10774f8278b7cbfba10 before c27e360545373b7aee9862a5beef3b9fb3df0c25 | CNA record |
References
- https://git.kernel.org/stable/c/fe79571f40434b257d68cbfb7b3ae93a794d8a11
- https://git.kernel.org/stable/c/2926031acba100d0c18fcfaa7a2ed29609318848
- https://git.kernel.org/stable/c/c27e360545373b7aee9862a5beef3b9fb3df0c25
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.