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NVD / CVE Program· CNA Linux

CVE-2026-64155: wifi: ath11k: fix error path leaks in some WMI WOW calls

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 008955b1348452de25bc19d6e0f0f673d4cb9a3c, 3d675896ea03aca631852a2a7e91e6cb8f664967, 55dda532bbc261aef495e403c8900c5e2ab5fa34.

Low priority for now. Upgrade to Linux Linux 008955b1348452de25bc19d6e0f0f673d4cb9a3c, 3d675896ea03aca631852a2a7e91e6cb8f664967, 55dda532bbc261aef495e403c8900c5e2ab5fa34 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix error path leaks in some WMI WOW calls Fix two instances where we used to directly return the result of ath11k_wmi_cmd_send(...). Because we did not check the return value, we also did not free the skb in the error path.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 19, 2026
Updated
Aug 17, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.11 and later · before 5.15.209
  • linux linux kernel5.16 and later · before 6.1.175
  • linux linux kernel6.2 and later · before 6.6.142
  • linux linux kernel6.7 and later · before 6.12.92
  • linux linux kernel6.13 and later · before 6.18.34
  • linux linux kernel6.19 and later · before 7.0.11
  • linux linux kernel7.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.11affected
    • 79802b13a492d0fdeb922e98628e5ff1a8b74026 and later · before d6c7b8d0dc22c0a8743435db8f42d98524b70df3affected · git
    • 79802b13a492d0fdeb922e98628e5ff1a8b74026 and later · before cd43d587dd333517c806cd24696e6e1a26b9951eaffected · git
    • 79802b13a492d0fdeb922e98628e5ff1a8b74026 and later · before 3d675896ea03aca631852a2a7e91e6cb8f664967affected · git
    • 79802b13a492d0fdeb922e98628e5ff1a8b74026 and later · before 008955b1348452de25bc19d6e0f0f673d4cb9a3caffected · git
    • 79802b13a492d0fdeb922e98628e5ff1a8b74026 and later · before acde4692afcdaea6de3e2996ddfaeaa7ae6b0130affected · git
    • 79802b13a492d0fdeb922e98628e5ff1a8b74026 and later · before d618d322b95c80d5ad7091f35a7193e4050dcc27affected · git
    • 79802b13a492d0fdeb922e98628e5ff1a8b74026 and later · before 55dda532bbc261aef495e403c8900c5e2ab5fa34affected · git
    • before 5.11not affected · semver
    • 5.15.209 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.94-16.12.94-1
Debian:14linuxbefore 7.0.12-17.0.12-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-64152Jul 19, 2026 · iommu: Handle unmap error when iommu_debug is enabled
    31Monitor
  • ← EarlierCVE-2026-64153Jul 19, 2026 · drm/msm: Fix iommu_map_sgtable() return value check and avoid WARN
    35Monitor
  • Later →CVE-2026-64156Jul 19, 2026 · netfs, afs: Fix write skipping in dir/link writepages
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux008955b1348452de25bc19d6e0f0f673d4cb9a3cVendor (CNA)
Linux Linux3d675896ea03aca631852a2a7e91e6cb8f664967Vendor (CNA)
Linux Linux55dda532bbc261aef495e403c8900c5e2ab5fa34Vendor (CNA)
Linux Linuxacde4692afcdaea6de3e2996ddfaeaa7ae6b0130Vendor (CNA)
Linux Linuxcd43d587dd333517c806cd24696e6e1a26b9951eVendor (CNA)
Linux Linuxd618d322b95c80d5ad7091f35a7193e4050dcc27Vendor (CNA)
Linux Linuxd6c7b8d0dc22c0a8743435db8f42d98524b70df3Vendor (CNA)
debian:linux6.1.176-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records