CVE-2026-64462
PCI: altera: Fix resource leaks on probe failure
Description
In the Linux kernel, the following vulnerability has been resolved: PCI: altera: Fix resource leaks on probe failure The chained IRQ handler is set during probe, but is only removed during the driver remove(). If pci_host_probe() fails, the handler and INTx IRQ domain remain set even though the devm-managed host bridge storage containing struct altera_pcie will be released, leaving the handler with a stale data pointer. Interrupts are also enabled before pci_host_probe() is called. If probe fails after that point, the controller interrupt source should be disabled before the chained handler and INTx domain are removed. So set the chained handler only after the INTx domain has been created. Disable controller interrupts during IRQ teardown, and tear the IRQ setup down if pci_host_probe() fails. [mani: commit log]
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
July 25, 2026, 10:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64462
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Set chained IRQ handler after INTx domain creation.
- Disable controller interrupts during IRQ teardown.
- Tear down IRQ setup on probe failure.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64462.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64462 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64462
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64462 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64462 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': 'af7cf5d56d7d57c4fbfdb7b5b693790f331b07b7', 'versionType': 'git'}, {'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': '9cf0cc481e1645ec65e61486ae41c486c59781cb', 'versionType': 'git'}, {'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': '99fc088d6cc6890ae35fa2f29c50ebe027844c20', 'versionType': 'git'}, {'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': 'a25bfa2a6665a1d77324d4a609e7513b87680227', 'versionType': 'git'}, {'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': '0db9aa9ec51be0a0ffdcdfd9af2b7bf3aeb7911a', 'versionType': 'git'}, {'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': '09c43b7b7d29c6fadb27f32cdf7f3bb6598befa9', 'versionType': 'git'}, {'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': '6864c789b570e57f932847fa83f6b56917182d73', 'versionType': 'git'}, {'status': 'affected', 'version': 'c63aed7334c21de8d626ff028ccad98cf5847a0e', 'lessThan': '7a94138caeb27f3c49c1dbd93bf422098925bb28', 'versionType': 'git'}], 'programFiles': ['drivers/pci/controller/pcie-altera.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/pci/controller/pcie-altera.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: PCI: altera: Fix resource leaks on probe failure The chained IRQ handler is set during probe, but is only removed during the driver remove(). If pci_host_probe() fails, the handler and INTx IRQ domain remain set even though the devm-managed host bridge storage containing struct altera_pcie will be released, leaving the handler with a stale data pointer. Interrupts are also enabled before pci_host_probe() is called. If probe fails after that point, the controller interrupt source should be disabled before the chained handler and INTx domain are removed. So set the chained handler only after the INTx domain has been created. Disable controller interrupts during IRQ teardown, and tear the IRQ setup down if pci_host_probe() fails. [mani: commit log] Added Reference https://git.kernel.org/stable/c/09c43b7b7d29c6fadb27f32cdf7f3bb6598befa9 Added Reference https://git.kernel.org/stable/c/0db9aa9ec51be0a0ffdcdfd9af2b7bf3aeb7911a Added Reference https://git.kernel.org/stable/c/6864c789b570e57f932847fa83f6b56917182d73 Added Reference https://git.kernel.org/stable/c/7a94138caeb27f3c49c1dbd93bf422098925bb28 Added Reference https://git.kernel.org/stable/c/99fc088d6cc6890ae35fa2f29c50ebe027844c20 Added Reference https://git.kernel.org/stable/c/9cf0cc481e1645ec65e61486ae41c486c59781cb Added Reference https://git.kernel.org/stable/c/a25bfa2a6665a1d77324d4a609e7513b87680227 Added Reference https://git.kernel.org/stable/c/af7cf5d56d7d57c4fbfdb7b5b693790f331b07b7