In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Switch from mutex to spinlock for irqfds irqfd_wakeup() gets EPOLLHUP, when it is called by eventfd_release() by way of wake_up_poll(&ctx->wqh, EPOLLHUP), which gets called under spin_lock_irqsave(). We can't use a mutex here as it will lead to a deadlock. Fix it by switching over to a spin lock.
History

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Sep 2024 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-667
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Wed, 04 Sep 2024 23:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

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'}

threat_severity

Moderate


Wed, 04 Sep 2024 18:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Switch from mutex to spinlock for irqfds irqfd_wakeup() gets EPOLLHUP, when it is called by eventfd_release() by way of wake_up_poll(&ctx->wqh, EPOLLHUP), which gets called under spin_lock_irqsave(). We can't use a mutex here as it will lead to a deadlock. Fix it by switching over to a spin lock.
Title xen: privcmd: Switch from mutex to spinlock for irqfds
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-09-04T18:35:55.939Z

Updated: 2024-12-19T09:19:06.134Z

Reserved: 2024-08-21T05:34:56.666Z

Link: CVE-2024-44957

cve-icon Vulnrichment

Updated: 2024-09-11T12:42:27.619Z

cve-icon NVD

Status : Analyzed

Published: 2024-09-04T19:15:30.523

Modified: 2024-09-06T16:37:00.077

Link: CVE-2024-44957

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-09-04T00:00:00Z

Links: CVE-2024-44957 - Bugzilla