Unknown

CVE-2026-72023 — octeontx2-pf: fix SQB pointer leak on init failure

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix SQB pointer leak on init failure otx2_init_hw_resources() initializes SQ aura and pool resources before several later setup steps. On failure, err_free_sq_ptrs only frees SQB pages, leaving the per-SQ sqb_ptrs arrays behind. Use otx2_free_sq_res() for the SQ unwind path and let it free sqb_ptrs even when sq->sqe has not been allocated yet. 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 v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have an OcteonTX2 PF device and the corresponding AF mailbox setup to test with, no runtime testing was able to be performed.

Published Aug 15, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.22%

ahead of 12% of scored CVEs · Oct 30, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < fca9c22633169a6c5d429a32e439121b6419e2be≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < 42c2836f10ac0427dac9e9a923d6ee2189dec544≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < 2cac2eac935ed7e0a9203204e036a1f6090ebc3d≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < 148d7ec0a3a98839c320e6cdd112e2e88bfb091b≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < 5e023fe2569e630ba23b5558ebe4bf4837af4d16≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < 5df30f05db96552903680a17f858d250dfd9e86e≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < 23d917acd9c9a9fd999688ec3fdde7aa58ab8a14≥ caa2da34fd25a37e9fd43343b6966fb9d730a6d5 and < 62e7df6d042aeebd5efb581074e28865c04477be and 1 more version 5.6	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 30, 2026 · 15 reading(s) · max 0.22%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 15, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

git.kernel.org/stable/c/5e023fe2569e630ba23b5558ebe4bf4837af4d16
NIST National Vulnerability Database
git.kernel.org/stable/c/23d917acd9c9a9fd999688ec3fdde7aa58ab8a14
NIST National Vulnerability Database
git.kernel.org/stable/c/5df30f05db96552903680a17f858d250dfd9e86e
NIST National Vulnerability Database
git.kernel.org/stable/c/2cac2eac935ed7e0a9203204e036a1f6090ebc3d
NIST National Vulnerability Database
git.kernel.org/stable/c/62e7df6d042aeebd5efb581074e28865c04477be
NIST National Vulnerability Database
git.kernel.org/stable/c/fca9c22633169a6c5d429a32e439121b6419e2be
NIST National Vulnerability Database
git.kernel.org/stable/c/148d7ec0a3a98839c320e6cdd112e2e88bfb091b
NIST National Vulnerability Database
git.kernel.org/stable/c/42c2836f10ac0427dac9e9a923d6ee2189dec544
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 2d
Unknown CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 2d
Unknown CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 2d
Unknown CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 2d
Unknown CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 2d
Unknown CVE-2026-99210 accel/rocket: clear rdev on device init failure 2d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-72023 is "octeontx2-pf: fix SQB pointer leak on init failure", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.22% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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