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CVE-2022-50818— scsi: pm8001: Fix running_req for internal abort commands

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running_req变量处理不当，可能导致内部中止命令挂起。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 2cbbf489778eb9dde51392ec5f74ae2868e4b857< 4e750e0d8e486569fcb7f4ba6f6471673ce7d8a2 affected
2cbbf489778eb9dde51392ec5f74ae2868e4b857< a62b9fc9775fbc8e666bb328f6e53c168054d6fe affected
2cbbf489778eb9dde51392ec5f74ae2868e4b857< d8c22c4697c11ed28062afe3c2b377025be11a23 affected
5.18 affected
< 5.18 unaffected
5.19.17≤ 5.19.* unaffected
6.0.3≤ 6.0.* unaffected
6.1≤ * unaffected
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I. Basic Information for CVE-2022-50818

Vulnerability Information
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Vulnerability Title
scsi: pm8001: Fix running_req for internal abort commands
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: Fix running_req for internal abort commands Disabling the remote phy for a SATA disk causes a hang: root@(none)$ more /sys/class/sas_phy/phy-0:0:8/target_port_protocols sata root@(none)$ echo 0 > sys/class/sas_phy/phy-0:0:8/enable root@(none)$ [ 67.855950] sas: ex 500e004aaaaaaa1f phy08 change count has changed [ 67.920585] sd 0:0:2:0: [sdc] Synchronizing SCSI cache [ 67.925780] sd 0:0:2:0: [sdc] Synchronize Cache(10) failed: Result: hostbyte=0x04 driverbyte=DRIVER_OK [ 67.935094] sd 0:0:2:0: [sdc] Stopping disk [ 67.939305] sd 0:0:2:0: [sdc] Start/Stop Unit failed: Result: hostbyte=0x04 driverbyte=DRIVER_OK ... [ 123.998998] INFO: task kworker/u192:1:642 blocked for more than 30 seconds. [ 124.005960] Not tainted 6.0.0-rc1-205202-gf26f8f761e83 #218 [ 124.012049] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 124.019872] task:kworker/u192:1 state:D stack:0 pid: 642 ppid: 2 flags:0x00000008 [ 124.028223] Workqueue: 0000:04:00.0_event_q sas_port_event_worker [ 124.034319] Call trace: [ 124.036758] __switch_to+0x128/0x278 [ 124.040333] __schedule+0x434/0xa58 [ 124.043820] schedule+0x94/0x138 [ 124.047045] schedule_timeout+0x2fc/0x368 [ 124.051052] wait_for_completion+0xdc/0x200 [ 124.055234] __flush_workqueue+0x1a8/0x708 [ 124.059328] sas_porte_broadcast_rcvd+0xa8/0xc0 [ 124.063858] sas_port_event_worker+0x60/0x98 [ 124.068126] process_one_work+0x3f8/0x660 [ 124.072134] worker_thread+0x70/0x700 [ 124.075793] kthread+0x1a4/0x1b8 [ 124.079014] ret_from_fork+0x10/0x20 The issue is that the per-device running_req read in pm8001_dev_gone_notify() never goes to zero and we never make progress. This is caused by missing accounting for running_req for when an internal abort command completes. In commit 2cbbf489778e ("scsi: pm8001: Use libsas internal abort support") we started to send internal abort commands as a proper sas_task. In this when we deliver a sas_task to HW the per-device running_req is incremented in pm8001_queue_command(). However it is never decremented for internal abort commnds, so decrement in pm8001_mpi_task_abort_resp().
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running_req变量处理不当，可能导致内部中止命令挂起。
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 2cbbf489778eb9dde51392ec5f74ae2868e4b857 ~ 4e750e0d8e486569fcb7f4ba6f6471673ce7d8a2 -
Linux Linux 5.18 -

II. Public POCs for CVE-2022-50818

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III. Intelligence Information for CVE-2022-50818

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Other References for CVE-2022-50818 (3)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
CVE-2023-54223 9.8 CRITICAL net/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-54237 9.8 CRITICAL net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-54292 9.8 CRITICAL RDMA/irdma: Fix data race on CQP request done
CVE-2023-54280 9.8 CRITICAL cifs: fix potential race when tree connecting ipc
CVE-2023-54269 9.8 CRITICAL SUNRPC: double free xprt_ctxt while still in use
CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
CVE-2023-54257 9.8 CRITICAL net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2023-54318 8.8 HIGH net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
CVE-2022-50880 8.8 HIGH wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54250 8.2 HIGH ksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-54164 8.0 HIGH Bluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-54317 7.8 HIGH dm flakey: don't corrupt the zero page
CVE-2022-50841 7.8 HIGH fs/ntfs3: Add overflow check for attribute size
CVE-2023-54201 7.8 HIGH RDMA/efa: Fix wrong resources deallocation order

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50818

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