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CVE-2022-50643— cifs: Fix xid leak in cifs_copy_file_range()

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xid泄漏，可能导致资源耗尽。

AI Predicted 3.3 Difficulty: Trivial EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 4e8aea30f7751ce7c4b158aa0c04e7744d281cc3< bf49d4fe4ab7b8d812927a2c7b514864d5fc1bb2 affected
4e8aea30f7751ce7c4b158aa0c04e7744d281cc3< 27cfd3afaab000a455194338db3b7f2031fde9d0 affected
4e8aea30f7751ce7c4b158aa0c04e7744d281cc3< dc283313d1ca378d787cb55c1e580dc3de852680 affected
4e8aea30f7751ce7c4b158aa0c04e7744d281cc3< 9a97df404a402fe1174d2d1119f87ff2a0ca2fe9 affected
5.7 affected
< 5.7 unaffected
5.10.152≤ 5.10.* unaffected
5.15.76≤ 5.15.* unaffected
… +2 more rows
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I. Basic Information for CVE-2022-50643

Vulnerability Information
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Vulnerability Title
cifs: Fix xid leak in cifs_copy_file_range()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix xid leak in cifs_copy_file_range() If the file is used by swap, before return -EOPNOTSUPP, should free the xid, otherwise, the xid will be leaked.
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xid泄漏，可能导致资源耗尽。
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 4e8aea30f7751ce7c4b158aa0c04e7744d281cc3 ~ bf49d4fe4ab7b8d812927a2c7b514864d5fc1bb2 -
Linux Linux 5.7 -

II. Public POCs for CVE-2022-50643

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III. Intelligence Information for CVE-2022-50643

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

CVE-2022-50666 9.8 CRITICAL RDMA/siw: Fix QP destroy to wait for all references dropped.
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-2023-53785 8.8 HIGH mt76: mt7921: don't assume adequate headroom for SDIO headers
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-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-2022-50656 8.1 HIGH nfc: pn533: Clear nfc_target before being used
CVE-2023-53803 8.1 HIGH scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
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-2023-53829 7.8 HIGH f2fs: flush inode if atomic file is aborted
CVE-2023-53790 7.8 HIGH bpf: Zeroing allocated object from slab in bpf memory allocator
CVE-2023-53795 7.8 HIGH iommufd: IOMMUFD_DESTROY should not increase the refcount
CVE-2023-53844 7.8 HIGH drm/ttm: Don't leak a resource on swapout move error
CVE-2023-53846 7.8 HIGH f2fs: fix to do sanity check on direct node in truncate_dnode()

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-2022-50643

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