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CVE-2024-26627— scsi: core: Move scsi_host_busy() out of host lock for waking up EH handler

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于主机检查会唤醒错误处理程序。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 6eb045e092efefafc6687409a6fa6d1dabf0fb69< f5944853f7a961fedc1227dc8f60393f8936d37c affected
6eb045e092efefafc6687409a6fa6d1dabf0fb69< d37c1c81419fdef66ebd0747cf76fb8b7d979059 affected
6eb045e092efefafc6687409a6fa6d1dabf0fb69< db6338f45971b4285ea368432a84033690eaf53c affected
6eb045e092efefafc6687409a6fa6d1dabf0fb69< 65ead8468c21c2676d4d06f50b46beffdea69df1 affected
6eb045e092efefafc6687409a6fa6d1dabf0fb69< 07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb affected
6eb045e092efefafc6687409a6fa6d1dabf0fb69< 4373534a9850627a2695317944898eb1283a2db0 affected
5.5 affected
< 5.5 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-26627

Vulnerability Information
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Vulnerability Title
scsi: core: Move scsi_host_busy() out of host lock for waking up EH handler
Source: CVE Program / CVE List V5
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]
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于主机检查会唤醒错误处理程序。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 6eb045e092efefafc6687409a6fa6d1dabf0fb69 ~ f5944853f7a961fedc1227dc8f60393f8936d37c -
Linux Linux 5.5 -

II. Public POCs for CVE-2024-26627

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III. Intelligence Information for CVE-2024-26627

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Mailing List Discussions for CVE-2024-26627 (1)

Other References for CVE-2024-26627 (6)

Same Patch Batch · Linux · 2024-03-06 · 27 CVEs total

CVE-2024-26625 7.8 HIGH llc: call sock_orphan() at release time
CVE-2023-52586 7.8 HIGH drm/msm/dpu: Add mutex lock in control vblank irq
CVE-2024-26623 7.8 HIGH pds_core: Prevent race issues involving the adminq
CVE-2023-52590 7.8 HIGH ocfs2: Avoid touching renamed directory if parent does not change
CVE-2023-52591 7.8 HIGH reiserfs: Avoid touching renamed directory if parent does not change
CVE-2023-52606 7.8 HIGH powerpc/lib: Validate size for vector operations
CVE-2023-52604 7.8 HIGH FS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree
CVE-2023-52603 7.8 HIGH UBSAN: array-index-out-of-bounds in dtSplitRoot
CVE-2023-52602 7.8 HIGH jfs: fix slab-out-of-bounds Read in dtSearch
CVE-2023-52601 7.8 HIGH jfs: fix array-index-out-of-bounds in dbAdjTree
CVE-2023-52600 7.8 HIGH jfs: fix uaf in jfs_evict_inode
CVE-2023-52599 7.8 HIGH jfs: fix array-index-out-of-bounds in diNewExt
CVE-2024-26626 7.5 HIGH ipmr: fix kernel panic when forwarding mcast packets
CVE-2023-52588 7.3 HIGH f2fs: fix to tag gcing flag on page during block migration
CVE-2023-52597 KVM: s390: fix setting of fpc register
CVE-2023-52607 powerpc/mm: Fix null-pointer dereference in pgtable_cache_add
CVE-2023-52598 s390/ptrace: handle setting of fpc register correctly
CVE-2023-52583 ceph: fix deadlock or deadcode of misusing dget()
CVE-2023-52596 sysctl: Fix out of bounds access for empty sysctl registers
CVE-2023-52595 wifi: rt2x00: restart beacon queue when hardware reset

Showing top 20 of 27 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26627

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