cbcvebase.
CVE-2025-21694
published 2025-02-12

CVE-2025-21694: In the Linux kernel, the following vulnerability has been resolved: fs/proc: fix softlockup in __read_vmcore (part 2) Since commit 5cbcb62dddf5 ("fs/proc: fix…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
13.2th percentile
In the Linux kernel, the following vulnerability has been resolved: fs/proc: fix softlockup in __read_vmcore (part 2) Since commit 5cbcb62dddf5 ("fs/proc: fix softlockup in __read_vmcore") the number of softlockups in __read_vmcore at kdump time have gone down, but they still happen sometimes. In a memory constrained environment like the kdump image, a softlockup is not just a harmless message, but it can interfere with things like RCU freeing memory, causing the crashdump to get stuck. The second loop in __read_vmcore has a lot more opportunities for natural sleep points, like scheduling out while waiting for a data write to happen, but apparently that is not always enough. Add a cond_resched() to the second loop in __read_vmcore to (hopefully) get rid of the softlockups.

Affected

38 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.128-1 (bookworm)linux 6.1.128-1 (bookworm)
debianlinux-6.1< linux 6.1.128-1 (bookworm)linux 6.1.128-1 (bookworm)
linuxlinux
linuxlinux
linuxlinux
linuxlinux>= 4.19.317 < 4.204.20
linuxlinux>= 5.10.221 < 5.10.2345.10.234
linuxlinux>= 5.15.162 < 5.15.1775.15.177
linuxlinux>= 5.4.279 < 5.4.2905.4.290
linuxlinux>= 518fbd644dabb6aedbdd4939c6c9cc1bf651459f < a5a2ee8144c3897d37403a69118c3e3dc5713958a5a2ee8144c3897d37403a69118c3e3dc5713958
linuxlinux>= 5cbcb62dddf5346077feb82b7b0c9254222d3445 < 80828540dad0757b6337c6561d49c81038f38d8780828540dad0757b6337c6561d49c81038f38d87
linuxlinux>= 5cbcb62dddf5346077feb82b7b0c9254222d3445 < cbc5dde0a461240046e8a41c43d7c3b76d5db952cbc5dde0a461240046e8a41c43d7c3b76d5db952
linuxlinux>= 6.1.95 < 6.1.1276.1.127
linuxlinux>= 6.6.35 < 6.6.746.6.74
linuxlinux>= 6.9.6 < 6.106.10
linuxlinux>= 70c1835e776c8447c1aca87ddb38cfe764fe756a < 80da29deb88a3a907441fc35bb7bac309f31e71380da29deb88a3a907441fc35bb7bac309f31e713
linuxlinux>= 803d5a33d5ffdc2d86dcc0cfa01655a330612cdb < 84c4ed15626574c9ac6c1039ba9c137a77bcc7f284c4ed15626574c9ac6c1039ba9c137a77bcc7f2
linuxlinux>= a373ad833a6bfe4bc6cedcf7e56a99cc6fd9a193 < 65c367bd9d4f43513c7f837df5753bea9561b83665c367bd9d4f43513c7f837df5753bea9561b836
linuxlinux>= e1b160a50c756e0efbea290b9bf5117cb80e8c4b < 649b266606bc413407ce315f710c8ce8a88ee30a649b266606bc413407ce315f710c8ce8a88ee30a
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.128-16.1.128-1
linuxlinux_kernel>= 0 < 6.12.11-16.12.11-1
linuxlinux_kernel>= 0 < 6.12.11-16.12.11-1
linuxlinux_kernel>= 0 < 5.4.0-211.2315.4.0-211.231

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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