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Review reviewHigh

CVE-2022-50841

Linux

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Add overflow check for attribute size The offset addition could overflow and pass the used size check given an attribute with very large size (e.g., 0xffffff7f) while parsing MFT attributes. This could lead to out-of-bound memory R/W if we try to access the next attribute derived by Add2Ptr(attr, asize) [ 32.963847] BUG: unable to handle page fault for address: ffff956a83c76067 [ 32.964301] #PF: supervisor read access in kernel mode [ 32.964526] #PF: error_code(0x0000) - not-present page [ 32.964893] PGD 4dc01067...

CVSS
7.8
EPSS
0.20%
9.50% percentile
CISA KEV
Not listed
Published
2025.12.30
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.20%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Add overflow check for attribute size The offset addition could overflow and pass the used size check given an attribute with very large size (e.g., 0xffffff7f) while parsing MFT attributes. This could lead to out-of-bound memory R/W if we try to access the next attribute derived by Add2Ptr(attr, asize) [ 32.963847] BUG: unable to handle page fault for address: ffff956a83c76067 [ 32.964301] #PF: supervisor read access in kernel mode [ 32.964526] #PF: error_code(0x0000) - not-present page [ 32.964893] PGD 4dc01067...

Affected product and versions

Product
Linux
Affected versions
>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < d4489ba8fb806e07b43eecca5e9af5865d94cbf6, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < a1f0b873cf6ac1f00a749707d866494ed0708978, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 0bb9f93ba63acfdb7c363d9f9fc2199fc6fa913d, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < e19c6277652efba203af4ecd8eed4bd30a0054c9, >= 5.15
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux 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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2022-50841 — Linux | SECUFOCUS NOW