cbcvebase.
CVE-2024-26813
published 2024-04-05

CVE-2024-26813: In the Linux kernel, the following vulnerability has been resolved: vfio/platform: Create persistent IRQ handlers The vfio-platform SET_IRQS ioctl currently…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
14.4th percentile
In the Linux kernel, the following vulnerability has been resolved: vfio/platform: Create persistent IRQ handlers The vfio-platform SET_IRQS ioctl currently allows loopback triggering of an interrupt before a signaling eventfd has been configured by the user, which thereby allows a NULL pointer dereference. Rather than register the IRQ relative to a valid trigger, register all IRQs in a disabled state in the device open path. This allows mask operations on the IRQ to nest within the overall enable state governed by a valid eventfd signal. This decouples @masked, protected by the @locked spinlock from @trigger, protected via the @igate mutex. In doing so, it's guaranteed that changes to @trigger cannot race the IRQ handlers because the IRQ handler is synchronously disabled before modifying the trigger, and loopback triggering of the IRQ via ioctl is safe due to serialization with trigger changes via igate. For compatibility, request_irq() failures are maintained to be local to the SET_IRQS ioctl rather than a fatal error in the open device path. This allows, for example, a userspace driver with polling mode support to continue to work regardless of moving the request_irq() call site. This necessarily blocks all SET_IRQS access to the failed index.

Affected

24 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.85-1 (bookworm)linux 6.1.85-1 (bookworm)
linuxlinux
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < 07afdfd8a68f9eea8db0ddc4626c874f29d2ac5e07afdfd8a68f9eea8db0ddc4626c874f29d2ac5e
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < 09452c8fcbd7817c06e8e3212d99b45917e603a509452c8fcbd7817c06e8e3212d99b45917e603a5
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < cc5838f19d39a5fef04c468199699d2a4578be3acc5838f19d39a5fef04c468199699d2a4578be3a
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < 7932db06c82c5b2f42a4d1a849d97dba9ce4a3627932db06c82c5b2f42a4d1a849d97dba9ce4a362
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < 62d4e43a569b67929eb3319780be5359694c808662d4e43a569b67929eb3319780be5359694c8086
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < d6bedd6acc0bcb1e7e010bc046032e47f08d379fd6bedd6acc0bcb1e7e010bc046032e47f08d379f
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < 0f8d8f9c2173a541812dd750529f4a415117eb290f8d8f9c2173a541812dd750529f4a415117eb29
linuxlinux>= 57f972e2b341dd6a73533f9293ec55d584a5d833 < 675daf435e9f8e5a5eab140a9864dfad6668b375675daf435e9f8e5a5eab140a9864dfad6668b375
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.85-16.1.85-1
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 6.7.12-16.7.12-1
linuxlinux_kernel>= 0 < 5.4.0-189.2095.4.0-189.209
linuxlinux_kernel>= 0 < 5.15.0-116.1265.15.0-116.126
linuxlinux_kernel>= 0 < 6.8.0-35.356.8.0-35.35
linuxlinux_kernel>= 4.1 < 5.4.2745.4.274
linuxlinux_kernel>= 5.11 < 5.15.1545.15.154
linuxlinux_kernel>= 5.16 < 6.1.846.1.84
linuxlinux_kernel>= 5.5 < 5.10.2155.10.215
linuxlinux_kernel>= 6.2 < 6.6.246.6.24
linuxlinux_kernel>= 6.7 < 6.7.126.7.12
linuxlinux_kernel>= 6.8 < 6.8.36.8.3

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.0HIGH
vendor_ubuntu7.0HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.