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  4. CVE 2026 90217 bpf compare iterator types during state pruning
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Back to active CVEs
High · CVSS 7.8CVE-2026-90217

bpf: Compare iterator types during state pruningCVE-2026-90217

Answer in brief

CVE-2026-90217 records a High severity (CVSS 7.8) vulnerability in bpf: Compare iterator types during state pruning. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (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 Sep 17, 2026Updated Oct 21, 2026Source checked Nov 2, 2026First seen by HOL Sep 17, 2026Material review Oct 21, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. 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/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=dfab99df147b0d364f0c199f832ff2aedfb2265a <6424b9cde9edc7f2098115bbfd1ee3d84a958380 || >=dfab99df147b0d364f0c199f832ff2aedfb2265a <83608e303b95d07afba1c15da0b5d9e513c2f15a6424b9cde9edc7f2098115bbfd1ee3d84a958380, 83608e303b95d07afba1c15da0b5d9e513c2f15a
Linux/Linuxgeneric6.7Not reported
Linux/Linuxgeneric>=dfab99df147b0d364f0c199f832ff2aedfb2265a <e4ab436d5ba61e4910fd49d24bb64ddb34d493d6 || >=dfab99df147b0d364f0c199f832ff2aedfb2265a <6424b9cde9edc7f2098115bbfd1ee3d84a958380 || >=dfab99df147b0d364f0c199f832ff2aedfb2265a <83608e303b95d07afba1c15da0b5d9e513c2f15ae4ab436d5ba61e4910fd49d24bb64ddb34d493d6, 6424b9cde9edc7f2098115bbfd1ee3d84a958380, 83608e303b95d07afba1c15da0b5d9e513c2f15a
Linux/Linuxgeneric>=dfab99df147b0d364f0c199f832ff2aedfb2265a <86bbaf9e6e4fa6c0dfb352e9e11fae328069233a || >=dfab99df147b0d364f0c199f832ff2aedfb2265a <e4ab436d5ba61e4910fd49d24bb64ddb34d493d6 || >=dfab99df147b0d364f0c199f832ff2aedfb2265a <6424b9cde9edc7f2098115bbfd1ee3d84a958380 || >=dfab99df147b0d364f0c199f832ff2aedfb2265a <83608e303b95d07afba1c15da0b5d9e513c2f15a86bbaf9e6e4fa6c0dfb352e9e11fae328069233a, e4ab436d5ba61e4910fd49d24bb64ddb34d493d6, 6424b9cde9edc7f2098115bbfd1ee3d84a958380, 83608e303b95d07afba1c15da0b5d9e513c2f15a

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 6424b9cde9edc7f2098115bbfd1ee3d84a958380; Linux/Linux to e4ab436d5ba61e4910fd49d24bb64ddb34d493d6; Linux/Linux to 86bbaf9e6e4fa6c0dfb352e9e11fae328069233a if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 17, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 17, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: bpf: Compare iterator types during state pruning An iterator stack slot can be MEM_RCU or PTR_UNTRUSTED. These states must not be equal, or the verifier can prune an unsafe path. Compare the pointer type for STACK_ITER slots.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 2, 2026
References
4 linked sources
Open source record