Unknown

CVE-2026-72153 — irqchip/crossbar: Use correct index in crossbar_domain_free()

In the Linux kernel, the following vulnerability has been resolved: irqchip/crossbar: Use correct index in crossbar_domain_free() crossbar_domain_free() resets the domain data and then uses the nulled out irq_data->hwirq member as index to reset the irq_map[] entry and to write the relevant crossbar register with a safe entry. That means it never frees the correct index and keeps the crossbar register connection to the source interrupt active. If it would not reset the domain data, then this would be even worse as irq_data->hwirq holds the source interrupt number, but both the map and register index need the corresponding GIC SPI number and not the source interrupt number. This might even result in an out of bounds access as the source interrupt number can be higher than the maximal index space. Fix this by using the GIC SPI index from the parent domain's irq_data.

Published Aug 15, 2026 · Updated Oct 16, 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 13% 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	≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < 13bdb5140405ff283f9052e65ee1d5c2303765c7≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < 1c48dc6a0c1ef47a9fa24611e60bc2f4ee4dd0df≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < ccc3664679763d2d6f067c28729bdff627bb72d0≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < 424130169dc03b84ea604685409726d61bcec859≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < cca649a23a5fc8aae536fc27a0546c67690a4078≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < 36ca587f55a2c04468a89fd16174bb2f78dc04ec≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < e5be5d452d5f1efbb3342da2b00029be6c99034e≥ 783d31863fb826f1a3754a2d5959a022a1b12d54 and < 043db005a8d6932dc7d217c86307e9af0bc10ddc and 1 more version 4.1	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 16, 2026
Affected products added · linux/linux
Oct 16, 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/cca649a23a5fc8aae536fc27a0546c67690a4078
NIST National Vulnerability Database
git.kernel.org/stable/c/1c48dc6a0c1ef47a9fa24611e60bc2f4ee4dd0df
NIST National Vulnerability Database
git.kernel.org/stable/c/e5be5d452d5f1efbb3342da2b00029be6c99034e
NIST National Vulnerability Database
git.kernel.org/stable/c/36ca587f55a2c04468a89fd16174bb2f78dc04ec
NIST National Vulnerability Database
git.kernel.org/stable/c/424130169dc03b84ea604685409726d61bcec859
NIST National Vulnerability Database
git.kernel.org/stable/c/ccc3664679763d2d6f067c28729bdff627bb72d0
NIST National Vulnerability Database
git.kernel.org/stable/c/13bdb5140405ff283f9052e65ee1d5c2303765c7
NIST National Vulnerability Database
git.kernel.org/stable/c/043db005a8d6932dc7d217c86307e9af0bc10ddc
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-2026-72153 is "irqchip/crossbar: Use correct index in crossbar_domain_free()", 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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