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Review reviewCritical

CVE-2022-49362

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix potential use-after-free in nfsd_file_put() nfsd_file_put_noref() can free @nf, so don't dereference @nf immediately upon return from nfsd_file_put_noref().

CVSS
9.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2025.02.26
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 9.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix potential use-after-free in nfsd_file_put() nfsd_file_put_noref() can free @nf, so don't dereference @nf immediately upon return from nfsd_file_put_noref().

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 9862064ca81f9b9da8ebe26c86cf2b10c293ba1a < ada1757b259f353cade47037ee0a0249b4cddad3, >= a98e5b3d958ac697aafb3d077eb2cca4a731b7ee < 261eabe19cb28e4a8587a4442d257b543d7c2d57, >= 999397926ab3f78c7d1235cc4ca6e3c89d2769bf < 333dcc94ebf53f79f3dc0e7a7c16700bc7ff7e57, >= 999397926ab3f78c7d1235cc4ca6e3c89d2769bf < b6c71c66b0ad8f2b59d9bc08c7a5079b110bec01, >= 5.18, >= 5.18 < 5.18.4, 5.19
Fixed versions
5.18.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416