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  4. CVE 2022 2327 use after free in iouring ad workflags in linux
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Back to active CVEs
High · CVSS 7.5CVE-2022-2327

Use-after-free in io_uring ad work_flags in Linux KernelCVE-2022-2327

Answer in brief

CVE-2022-2327 records a High severity (CVSS 7.5) vulnerability in Use-after-free in io_uring ad work_flags in Linux Kernel. The current sources do not mark it as known exploited. The current feed maps Linux Kernel/Linux Kernel (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 22, 2022Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 10, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
13 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux Kernel/Linux Kernel (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux Kernel/Linux Kernelgeneric>=unspecified <df3f3bb5059d20ef094d6b2f0256c4bf4127a859df3f3bb5059d20ef094d6b2f0256c4bf4127a859
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric>=0 <V1.1V1.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux Kernel/Linux Kernel, Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem.
  2. 2Review the reported fix. Update Linux Kernel/Linux Kernel to df3f3bb5059d20ef094d6b2f0256c4bf4127a859; Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 22, 2022

    Evidence: source:cvelist:source_dates:source-dates:record
  2. Source modified

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  3. First seen by HOL

    Oct 10, 2026

Sources and claim methodology

  • Source referencecert-portal.siemens.com
  • Source referencegit.kernel.org
  • Source referencekernel.dance
  • Source referencesecurity.netapp.com
Upstream source description

io_uring use work_flags to determine which identity need to grab from the calling process to make sure it is consistent with the calling process when executing IORING_OP. Some operations are missing some types, which can lead to incorrect reference counts which can then lead to a double free. We recommend upgrading the kernel past commit df3f3bb5059d20ef094d6b2f0256c4bf4127a859

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-416, CWE-415
Source
CVE List V5
Source checked
Oct 14, 2026
References
4 linked sources
Open source record