dbcve.org
Enterprise LinuxOperating system · Redhat

CVE-2022-0561

MEDIUM · 5.5 CVSS v3.1 Published 2022-02-11
Fix available
A fix is available. Upgrade to after 4.3.0 or later.
See remediation →
58/100
Remediation priority · Elevated
Public exploit No privileges Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Null source pointer passed as an argument to memcpy() function within TIFFFetchStripThing() in tif_dirread.c in libtiff versions from 3.9.0 to 4.3.0 could lead to Denial of Service via crafted TIFF file. For users that compile libtiff from sources, the fix is available with commit eecb0712.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-476

The code follows a pointer that is null, crashing the process. An attacker who can reliably trigger it turns the crash into a denial of service. The fix is checking for null before use and handling the failure path gracefully.

General guidance for the null pointer dereference class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Enterprise LinuxOperating system
Affected:= 8.0
FedoraOperating system
Affected:= 35
Debian LinuxOperating system
Affected:= 9.0= 10.0= 11.0
LibtiffApplication
Affected:>= 3.9.0, <= 4.3.0
Ontap Select Deploy Administration UtilityApplication
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 4.3.0
Vendor patch gitlab.com →
Recommended fix Moderate confidence

libtiff 4.4.0 or later (the fix commit is included in subsequent releases)

  1. 1. Obtain the fix commit eecb0712f4c3a5b449f70c57988260a667ddbdef from the libtiff GitLab repository
  2. 2. Review the commit changes to understand the NULL pointer dereference fix in TIFFFetchStripThing() in tif_dirread.c
  3. 3. Apply the patch to the local libtiff source code repository
  4. 4. Recompile libtiff from the patched source
  5. 5. Rebuild any applications that link against the custom libtiff library
  6. 6. Test the patched library with the affected software (Enterprise Linux 8.0, Fedora 35, Debian 9.0/10.0/11.0, or Ontap Select Deploy)

Generated from the published advisory — verify against the referenced sources before acting.

We can identify the exact fixed release, upgrade, and verify it in staging — typical engagement from $2,850. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-0561 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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