CVE-2022-50775— RDMA/hns: Fix refcount leak in hns_roce_mmap
Possible ATT&CK Techniques 1AI
T1211 · Exploitation for StealthAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 0045e0d3f42ed7d05434bb5bc16acfc793ea4891< fa87cf2e756efe809ee8683d4f282f4de962dab6 | affected |
0045e0d3f42ed7d05434bb5bc16acfc793ea4891< 8abd2ff2256a2a99c11c7ecdcb5512429933620f | affected | ||
0045e0d3f42ed7d05434bb5bc16acfc793ea4891< cf6a05c8494a8ae7fec8e5f1229b45ca5b4bcd30 | affected | ||
5.17 | affected | ||
< 5.17 | unaffected | ||
6.1.16≤ 6.1.* | unaffected | ||
6.2.3≤ 6.2.* | unaffected | ||
6.3≤ * | unaffected |
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I. Basic Information for CVE-2022-50775
Vulnerability Information
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Vulnerability Title
RDMA/hns: Fix refcount leak in hns_roce_mmap
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix refcount leak in hns_roce_mmap rdma_user_mmap_entry_get_pgoff() takes the reference. Add missing rdma_user_mmap_entry_put() to release the reference. Acked-by Haoyue Xu <xuhaoyue1@hisilicon.com>
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，该漏洞源于未释放从rdma_user_mmap_entry_get_pgoff获取的引用，可能导致引用计数泄漏。
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
II. Public POCs for CVE-2022-50775
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2022-50775 (2)
Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total
| CVE-2025-68745 | 9.8 CRITICAL | scsi: qla2xxx: Clear cmds after chip reset |
| CVE-2025-68359 | 9.8 CRITICAL | btrfs: fix double free of qgroup record after failure to add delayed ref head |
| CVE-2025-68741 | 9.8 CRITICAL | scsi: qla2xxx: Fix improper freeing of purex item |
| CVE-2025-68726 | 9.8 CRITICAL | crypto: aead - Fix reqsize handling |
| CVE-2025-68736 | 8.8 HIGH | landlock: Fix handling of disconnected directories |
| CVE-2025-68360 | 8.2 HIGH | wifi: mt76: wed: use proper wed reference in mt76 wed driver callabacks |
| CVE-2025-68365 | 8.2 HIGH | fs/ntfs3: Initialize allocated memory before use |
| CVE-2025-68735 | 7.8 HIGH | drm/panthor: Prevent potential UAF in group creation |
| CVE-2025-68730 | 7.8 HIGH | accel/ivpu: Fix page fault in ivpu_bo_unbind_all_bos_from_context() |
| CVE-2025-68370 | 7.8 HIGH | coresight: tmc: add the handle of the event to the path |
| CVE-2025-68379 | 7.8 HIGH | RDMA/rxe: Fix null deref on srq->rq.queue after resize failure |
| CVE-2025-68724 | 7.8 HIGH | crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id |
| CVE-2025-68352 | 7.8 HIGH | spi: ch341: fix out-of-bounds memory access in ch341_transfer_one |
| CVE-2025-68748 | 7.8 HIGH | drm/panthor: Fix UAF race between device unplug and FW event processing |
| CVE-2025-68747 | 7.8 HIGH | drm/panthor: Fix UAF on kernel BO VA nodes |
| CVE-2025-68749 | 7.8 HIGH | accel/ivpu: Fix race condition when unbinding BOs |
| CVE-2025-68347 | 7.8 HIGH | ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events |
| CVE-2025-68746 | 7.8 HIGH | spi: tegra210-quad: Fix timeout handling |
| CVE-2025-68349 | 7.5 HIGH | NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid |
| CVE-2025-68369 | 7.5 HIGH | ntfs3: init run lock for extend inode |
Showing top 20 of 322 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2022-4994
KVM: x86: wean fast IN from emulator_pio_in - CVE-2026-64560
posix-cpu-timers: Prevent UAF caused by non-leader exec() ra - CVE-2026-64559
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl - CVE-2026-64558
s390/pkey: Check length in pkey_pckmo handler implementation - CVE-2026-64556
perf/core: Detach event groups during remove_on_exec
Same vendor: Linux
- CVE-2022-4994
KVM: x86: wean fast IN from emulator_pio_in - CVE-2026-64560
posix-cpu-timers: Prevent UAF caused by non-leader exec() ra - CVE-2026-64559
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl - CVE-2026-64558
s390/pkey: Check length in pkey_pckmo handler implementation - CVE-2026-64556
perf/core: Detach event groups during remove_on_exec
V. Comments for CVE-2022-50775
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