CVE-2025-21694 (GCVE-0-2025-21694)

Vulnerability from cvelistv5 – Published: 2025-02-12 13:27 – Updated: 2025-11-03 20:59
VLAI?
Title
fs/proc: fix softlockup in __read_vmcore (part 2)
Summary
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.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 803d5a33d5ffdc2d86dcc0cfa01655a330612cdb , < 84c4ed15626574c9ac6c1039ba9c137a77bcc7f2 (git)
Affected: 70c1835e776c8447c1aca87ddb38cfe764fe756a , < 80da29deb88a3a907441fc35bb7bac309f31e713 (git)
Affected: e1b160a50c756e0efbea290b9bf5117cb80e8c4b , < 649b266606bc413407ce315f710c8ce8a88ee30a (git)
Affected: a373ad833a6bfe4bc6cedcf7e56a99cc6fd9a193 , < 65c367bd9d4f43513c7f837df5753bea9561b836 (git)
Affected: 518fbd644dabb6aedbdd4939c6c9cc1bf651459f , < a5a2ee8144c3897d37403a69118c3e3dc5713958 (git)
Affected: 5cbcb62dddf5346077feb82b7b0c9254222d3445 , < 80828540dad0757b6337c6561d49c81038f38d87 (git)
Affected: 5cbcb62dddf5346077feb82b7b0c9254222d3445 , < cbc5dde0a461240046e8a41c43d7c3b76d5db952 (git)
Affected: 7bdf1d550ddfcd9ab797087421f77b7aceddc8a7 (git)
Affected: e8780e8a0e25dc4c3927f611ec8970d26c0c7369 (git)
Create a notification for this product.
    Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 5.4.290 , ≤ 5.4.* (semver)
Unaffected: 5.10.234 , ≤ 5.10.* (semver)
Unaffected: 5.15.177 , ≤ 5.15.* (semver)
Unaffected: 6.1.127 , ≤ 6.1.* (semver)
Unaffected: 6.6.74 , ≤ 6.6.* (semver)
Unaffected: 6.12.11 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.