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CVE-2022-50643

11
FAUCET Score

CVE-2022-50643 addresses a resource leak in the Linux kernel's CIFS implementation, specifically within the cifs_copy_file_range() function. An XID (transaction ID) is not properly freed when the file is used for swap and the operation returns -EOPNOTSUPP, leading to a leak. This vulnerability has no assigned CVSS score, indicating a low severity, and there is no information regarding attack vectors or potential impact. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
LinuxLinux
5.7CNA affecteddefault affected
LinuxLinux
>= 4e8aea30f7751ce7c4b158aa0c04e7744d281cc3, < 27cfd3afaab000a455194338db3b7f2031fde9d0, >= 4e8aea30f7751ce7c4b158aa0c04e7744d281cc3, < 9a97df404a402fe1174d2d1119f87ff2a0ca2fe9, >= 4e8aea30f7751ce7c4b158aa0c04e7744d281cc3, < bf49d4fe4ab7b8d812927a2c7b514864d5fc1bb2, >= 4e8aea30f7751ce7c4b158aa0c04e7744d281cc3, < dc283313d1ca378d787cb55c1e580dc3de852680CNA affecteddefault unaffected

CVSS Data

CVSS data has not been published for this CVE.

Exploit Intelligence

EPSS Score
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
7.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15

Social Chatter

Media Mentions

No media coverage found for this CVE.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-362.8.1.el9_3
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-50643Low

kernel: cifs: Fix xid leak in cifs_copy_file_range()

Dec 9, 2025

References

git.kernel.org / stable/c/27cfd3afaab000a455194338db3b7f2031fde9d0
git.kernel.org / stable/c/9a97df404a402fe1174d2d1119f87ff2a0ca2fe9
git.kernel.org / stable/c/bf49d4fe4ab7b8d812927a2c7b514864d5fc1bb2
git.kernel.org / stable/c/dc283313d1ca378d787cb55c1e580dc3de852680