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CVE-2022-50736— RDMA/siw: Fix immediate work request flush to completion queue

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，该漏洞源于立即工作请求刷新到完成队列时存在越界访问。

CVSS 7.1 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< 6af043089d3f1210776d19b6fdabea610d4c7699 affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< 75af03fdf35acf15a3977f7115f6b8d10dff4bc7 affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< f8d8fbd3b6d6cc3f25790cca5cffe8ded512fef6 affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< 355d2eca68c10d713a42f68e62044b3d1c300471 affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< f3d26a8589dfdeff328779b511f71fb90b10005e affected
303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b< bdf1da5df9da680589a7f74448dd0a94dd3e1446 affected
5.3 affected
< 5.3 unaffected
… +6 more rows
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I. Basic Information for CVE-2022-50736

Vulnerability Information
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Vulnerability Title
RDMA/siw: Fix immediate work request flush to completion queue
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix immediate work request flush to completion queue Correctly set send queue element opcode during immediate work request flushing in post sendqueue operation, if the QP is in ERROR state. An undefined ocode value results in out-of-bounds access to an array for mapping the opcode between siw internal and RDMA core representation in work completion generation. It resulted in a KASAN BUG report of type 'global-out-of-bounds' during NFSoRDMA testing. This patch further fixes a potential case of a malicious user which may write undefined values for completion queue elements status or opcode, if the CQ is memory mapped to user land. It avoids the same out-of-bounds access to arrays for status and opcode mapping as described above.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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，该漏洞源于立即工作请求刷新到完成队列时存在越界访问。
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 ~ 6af043089d3f1210776d19b6fdabea610d4c7699 -
Linux Linux 5.3 -

II. Public POCs for CVE-2022-50736

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III. Intelligence Information for CVE-2022-50736

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Other References for CVE-2022-50736 (3)

Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

CVE-2025-68741 9.8 CRITICAL scsi: qla2xxx: Fix improper freeing of purex item
CVE-2023-53867 9.8 CRITICAL ceph: fix potential use-after-free bug when trimming caps
CVE-2025-68726 9.8 CRITICAL crypto: aead - Fix reqsize handling
CVE-2025-68745 9.8 CRITICAL scsi: qla2xxx: Clear cmds after chip reset
CVE-2023-54094 9.8 CRITICAL net: prevent skb corruption on frag list segmentation
CVE-2023-54090 9.8 CRITICAL ixgbe: Fix panic during XDP_TX with > 64 CPUs
CVE-2022-50717 9.8 CRITICAL nvmet-tcp: add bounds check on Transfer Tag
CVE-2023-54076 9.8 CRITICAL smb: client: fix missed ses refcounting
CVE-2025-68359 9.8 CRITICAL btrfs: fix double free of qgroup record after failure to add delayed ref head
CVE-2023-53996 9.3 CRITICAL x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVE-2023-54071 8.8 HIGH wifi: rtw88: use work to update rate to avoid RCU warning
CVE-2023-54120 8.8 HIGH Bluetooth: Fix race condition in hidp_session_thread
CVE-2023-54043 8.8 HIGH iommufd: Do not add the same hwpt to the ioas->hwpt_list twice
CVE-2022-50732 8.8 HIGH staging: rtl8192u: Fix use after free in ieee80211_rx()
CVE-2023-54092 8.8 HIGH KVM: s390: pv: fix index value of replaced ASCE
CVE-2023-54060 8.8 HIGH iommufd: Set end correctly when doing batch carry
CVE-2025-68736 8.8 HIGH landlock: Fix handling of disconnected directories
CVE-2023-54040 8.8 HIGH ice: fix wrong fallback logic for FDIR
CVE-2023-53986 8.6 HIGH mips: bmips: BCM6358: disable RAC flush for TP1
CVE-2022-50746 8.4 HIGH erofs: validate the extent length for uncompressed pclusters

Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50736

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