CVE-2024-26846
"Linux nvme-fc Uninitialized Work Queue Denial of Service"
Description
In the Linux kernel, the following vulnerability has been resolved: nvme-fc: do not wait in vain when unloading module The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. This is done by flushing the nvme_delete_wq workqueue. While at it, remove the unused nvme_fc_wq workqueue too.
INFO
Published Date :
April 17, 2024, 10:15 a.m.
Last Modified :
March 21, 2025, 3:02 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
0.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26846.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-26846 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26846 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 21, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.10.211 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.80 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.150 *cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.19 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added Reference Type CVE: https://git.kernel.org/stable/c/085195aa90a924c79e35569bcdad860d764a8e17 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/085195aa90a924c79e35569bcdad860d764a8e17 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/0bf567d6d9ffe09e059bbdfb4d07143cef42c75c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0bf567d6d9ffe09e059bbdfb4d07143cef42c75c Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/70fbfc47a392b98e5f8dba70c6efc6839205c982 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/70fbfc47a392b98e5f8dba70c6efc6839205c982 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/c0882c366418bf9c19e1ba7f270fe377a9bf5d67 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c0882c366418bf9c19e1ba7f270fe377a9bf5d67 Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Mailing List, Third Party Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/085195aa90a924c79e35569bcdad860d764a8e17 Added Reference https://git.kernel.org/stable/c/0bf567d6d9ffe09e059bbdfb4d07143cef42c75c Added Reference https://git.kernel.org/stable/c/4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 Added Reference https://git.kernel.org/stable/c/70fbfc47a392b98e5f8dba70c6efc6839205c982 Added Reference https://git.kernel.org/stable/c/baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 Added Reference https://git.kernel.org/stable/c/c0882c366418bf9c19e1ba7f270fe377a9bf5d67 Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 05, 2024
Action Type Old Value New Value Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 01, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-415 Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 17, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: nvme-fc: do not wait in vain when unloading module The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. This is done by flushing the nvme_delete_wq workqueue. While at it, remove the unused nvme_fc_wq workqueue too. Added Reference kernel.org https://git.kernel.org/stable/c/4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0bf567d6d9ffe09e059bbdfb4d07143cef42c75c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/085195aa90a924c79e35569bcdad860d764a8e17 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c0882c366418bf9c19e1ba7f270fe377a9bf5d67 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/70fbfc47a392b98e5f8dba70c6efc6839205c982 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26846 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26846
weaknesses.