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CVE-2022-50666— RDMA/siw: Fix QP destroy to wait for all references dropped.

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siw RDMA QP销毁未等待引用释放，可能导致释放后重用。

CVSS 9.8 · Critical EPSS 0.73% · P54

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< 5c75d608fad58301b63e7d69200c13c3a1d411da affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< 74ad141e995a730760b1bcfa14854b7f1057d6bc affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737 affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< a3c278807a459e6f50afee6971cabe74cccfb490 affected
5.3 affected
< 5.3 unaffected
5.15.75≤ 5.15.* unaffected
5.19.17≤ 5.19.* unaffected
… +2 more rows
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I. Basic Information for CVE-2022-50666

Vulnerability Information
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Vulnerability Title
RDMA/siw: Fix QP destroy to wait for all references dropped.
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix QP destroy to wait for all references dropped. Delay QP destroy completion until all siw references to QP are dropped. The calling RDMA core will free QP structure after successful return from siw_qp_destroy() call, so siw must not hold any remaining reference to the QP upon return. A use-after-free was encountered in xfstest generic/460, while testing NFSoRDMA. Here, after a TCP connection drop by peer, the triggered siw_cm_work_handler got delayed until after QP destroy call, referencing a QP which has already freed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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siw RDMA QP销毁未等待引用释放，可能导致释放后重用。
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 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b ~ 5c75d608fad58301b63e7d69200c13c3a1d411da -
Linux Linux 5.3 -

II. Public POCs for CVE-2022-50666

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III. Intelligence Information for CVE-2022-50666

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Same Patch Batch · Linux · 2025-12-09 · 152 CVEs total

CVE-2025-40343 9.8 CRITICAL nvmet-fc: avoid scheduling association deletion twice
CVE-2023-53794 9.8 CRITICAL cifs: fix session state check in reconnect to avoid use-after-free issue
CVE-2025-40342 8.8 HIGH nvme-fc: use lock accessing port_state and rport state
CVE-2023-53822 8.8 HIGH wifi: ath11k: Ignore frags from uninitialized peer in dp.
CVE-2025-40336 8.8 HIGH drm/gpusvm: fix hmm_pfn_to_map_order() usage
CVE-2023-53827 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}
CVE-2023-53785 8.8 HIGH mt76: mt7921: don't assume adequate headroom for SDIO headers
CVE-2025-40328 8.8 HIGH smb: client: fix potential UAF in smb2_close_cached_fid()
CVE-2023-53851 8.4 HIGH drm/msm/dp: Drop aux devices together with DP controller
CVE-2025-40337 8.2 HIGH net: stmmac: Correctly handle Rx checksum offload errors
CVE-2023-53803 8.1 HIGH scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
CVE-2022-50656 8.1 HIGH nfc: pn533: Clear nfc_target before being used
CVE-2023-53790 7.8 HIGH bpf: Zeroing allocated object from slab in bpf memory allocator
CVE-2023-53862 7.8 HIGH hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
CVE-2023-53781 7.8 HIGH smc: Fix use-after-free in tcp_write_timer_handler().
CVE-2023-53838 7.8 HIGH f2fs: synchronize atomic write aborts
CVE-2023-53860 7.8 HIGH dm: don't attempt to queue IO under RCU protection
CVE-2023-53816 7.8 HIGH drm/amdkfd: fix potential kgd_mem UAFs
CVE-2023-53795 7.8 HIGH iommufd: IOMMUFD_DESTROY should not increase the refcount
CVE-2023-53804 7.8 HIGH nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()

Showing top 20 of 152 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50666

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