net: ena: clean up XDP TX queues when regular TX setup fails
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Partial Red Hat: 3 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ena: clean up XDP TX queues when regular TX setup fails create_queues_with_size_backoff() creates XDP TX queues before setting up the regular TX path. If the subsequent allocation or creation of regular TX queues fails, the error handling paths omit the teardown of the XDP TX queues, leading to a resource leak. Fix this by explicitly destroying the XDP TX queue subset at the two missing failure points. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc7. An x86_64 allyesconfig build showed no new warnings. As we do not have an ENA device to test with, no runtime testing was able to be performed.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-72056
- 2026-10-03 Alias added: GHSA-m3r6-prq6-28vh
- 2026-11-06 CISA SSVC decision points changed
References
Other 8
- https://git.kernel.org/stable/c/df65d9fea8437235e740552e542fb309765507db
- https://git.kernel.org/stable/c/5daa63404b708fc74e94da8398affbb148d09044
- https://git.kernel.org/stable/c/523caef03124ecc08ce62a78c617759c2d28cf1c
- https://git.kernel.org/stable/c/f2ff634d95f8a6c885b9ce71a64067e255bcc34a
- https://git.kernel.org/stable/c/6773d6d82bdabddab2b31605d6d7029c91dbd217
- https://git.kernel.org/stable/c/6596baf8041100a9d1647beb5ea8ea4496ce058f
- https://git.kernel.org/stable/c/11f68ebc6891d11de5f32b7dee918c5dc18b8de1
- https://git.kernel.org/stable/c/1bd6676254b4ab6acd44b662b5e92822c036463a
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Sources
- CVE-2026-72056 · CVE Program
- CVE-2026-72056 · NVD
- FIRST EPSS
- GHSA-m3r6-prq6-28vh · GitHub Advisory Database · CC BY 4.0
- CVE-2026-72056 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences