CVE-2024-26627
Linux Kernel SCSI EH Handler Lockup Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Move scsi_host_busy() out of host lock for waking up EH handler Inside scsi_eh_wakeup(), scsi_host_busy() is called & checked with host lock every time for deciding if error handler kthread needs to be waken up. This can be too heavy in case of recovery, such as: - N hardware queues - queue depth is M for each hardware queue - each scsi_host_busy() iterates over (N * M) tag/requests If recovery is triggered in case that all requests are in-flight, each scsi_eh_wakeup() is strictly serialized, when scsi_eh_wakeup() is called for the last in-flight request, scsi_host_busy() has been run for (N * M - 1) times, and request has been iterated for (N*M - 1) * (N * M) times. If both N and M are big enough, hard lockup can be triggered on acquiring host lock, and it is observed on mpi3mr(128 hw queues, queue depth 8169). Fix the issue by calling scsi_host_busy() outside the host lock. We don't need the host lock for getting busy count because host the lock never covers that. [mkp: Drop unnecessary 'busy' variables pointed out by Bart]
INFO
Published Date :
March 6, 2024, 7:15 a.m.
Last Modified :
March 14, 2025, 6:46 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
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-2024-26627.
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-26627 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26627 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. 14, 2025
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 from (excluding) 5.15.149 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 from (excluding) 5.10.210 *cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 from (excluding) 6.7.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 from (excluding) 6.6.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 from (excluding) 6.1.77 Added Reference Type CVE: https://git.kernel.org/stable/c/07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/4373534a9850627a2695317944898eb1283a2db0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4373534a9850627a2695317944898eb1283a2db0 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/65ead8468c21c2676d4d06f50b46beffdea69df1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/65ead8468c21c2676d4d06f50b46beffdea69df1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/d37c1c81419fdef66ebd0747cf76fb8b7d979059 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d37c1c81419fdef66ebd0747cf76fb8b7d979059 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/db6338f45971b4285ea368432a84033690eaf53c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/db6338f45971b4285ea368432a84033690eaf53c Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f5944853f7a961fedc1227dc8f60393f8936d37c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f5944853f7a961fedc1227dc8f60393f8936d37c Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Patch -
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/07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb Added Reference https://git.kernel.org/stable/c/4373534a9850627a2695317944898eb1283a2db0 Added Reference https://git.kernel.org/stable/c/65ead8468c21c2676d4d06f50b46beffdea69df1 Added Reference https://git.kernel.org/stable/c/d37c1c81419fdef66ebd0747cf76fb8b7d979059 Added Reference https://git.kernel.org/stable/c/db6338f45971b4285ea368432a84033690eaf53c Added Reference https://git.kernel.org/stable/c/f5944853f7a961fedc1227dc8f60393f8936d37c 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
Oct. 31, 2024
Action Type Old Value New Value Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:L/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
Mar. 06, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: scsi: core: Move scsi_host_busy() out of host lock for waking up EH handler Inside scsi_eh_wakeup(), scsi_host_busy() is called & checked with host lock every time for deciding if error handler kthread needs to be waken up. This can be too heavy in case of recovery, such as: - N hardware queues - queue depth is M for each hardware queue - each scsi_host_busy() iterates over (N * M) tag/requests If recovery is triggered in case that all requests are in-flight, each scsi_eh_wakeup() is strictly serialized, when scsi_eh_wakeup() is called for the last in-flight request, scsi_host_busy() has been run for (N * M - 1) times, and request has been iterated for (N*M - 1) * (N * M) times. If both N and M are big enough, hard lockup can be triggered on acquiring host lock, and it is observed on mpi3mr(128 hw queues, queue depth 8169). Fix the issue by calling scsi_host_busy() outside the host lock. We don't need the host lock for getting busy count because host the lock never covers that. [mkp: Drop unnecessary 'busy' variables pointed out by Bart] Added Reference Linux https://git.kernel.org/stable/c/f5944853f7a961fedc1227dc8f60393f8936d37c [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/d37c1c81419fdef66ebd0747cf76fb8b7d979059 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/db6338f45971b4285ea368432a84033690eaf53c [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/65ead8468c21c2676d4d06f50b46beffdea69df1 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/4373534a9850627a2695317944898eb1283a2db0 [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-2024-26627 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-2024-26627
weaknesses.