cbcvebase.
CVE-2024-26775
published 2024-04-03

CVE-2024-26775: In the Linux kernel, the following vulnerability has been resolved: aoe: avoid potential deadlock at set_capacity Move set_capacity() outside of the section…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.18%
8.2th percentile
In the Linux kernel, the following vulnerability has been resolved: aoe: avoid potential deadlock at set_capacity Move set_capacity() outside of the section procected by (&d->lock). To avoid possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- [1] lock(&bdev->bd_size_lock); local_irq_disable(); [2] lock(&d->lock); [3] lock(&bdev->bd_size_lock); [4] lock(&d->lock); *** DEADLOCK *** Where [1](&bdev->bd_size_lock) hold by zram_add()->set_capacity(). [2]lock(&d->lock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc() is trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call. In this situation an attempt to acquire [4]lock(&d->lock) from aoecmd_cfg_rsp() will lead to deadlock. So the simplest solution is breaking lock dependency [2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity() outside.

Affected

15 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux——
linuxlinux>= a782483cc1f875355690625d8253a232f2581418 < 2499fa286fb010ceb289950050199f33c26667b92499fa286fb010ceb289950050199f33c26667b9
linuxlinux>= a782483cc1f875355690625d8253a232f2581418 < 2d623c94fbba3554f4446ba6f3c764994e8b0d262d623c94fbba3554f4446ba6f3c764994e8b0d26
linuxlinux>= a782483cc1f875355690625d8253a232f2581418 < 673629018ba04906899dcb631beec34d871f709c673629018ba04906899dcb631beec34d871f709c
linuxlinux>= a782483cc1f875355690625d8253a232f2581418 < 19a77b27163820f793b4d022979ffdca8f659b7719a77b27163820f793b4d022979ffdca8f659b77
linuxlinux>= a782483cc1f875355690625d8253a232f2581418 < e169bd4fb2b36c4b2bee63c35c740c85daeb2e86e169bd4fb2b36c4b2bee63c35c740c85daeb2e86
linuxlinux_kernel< 6.1.806.1.80
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 5.15.0-156.1665.15.0-156.166
linuxlinux_kernel>= 6.2 < 6.6.196.6.19
linuxlinux_kernel>= 6.7 < 6.7.76.7.7

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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