CVE-2026-68318
pds_core: fix use-after-free on workqueue during remove
Description
In the Linux kernel, the following vulnerability has been resolved: pds_core: fix use-after-free on workqueue during remove In pdsc_remove(), the workqueue is destroyed before pdsc_teardown() is called. This ordering allows two paths to queue work on the destroyed workqueue: 1. If pdsc_teardown() -> pdsc_devcmd_reset() times out, the error path in pdsc_devcmd_locked() queues health_work. 2. A NotifyQ event can trigger the ISR and queue work before free_irq() is called in pdsc_teardown(). Fix by moving destroy_workqueue() after pdsc_teardown() so the workqueue outlives every queuer; destroy_workqueue() then flushes any work still pending. Draining the queued work also requires ordering the teardown so the resources that work touches are freed last: - In pdsc_qcq_free(), after freeing the interrupt, cancel_work_sync() the queue's work and only then clear qcq->intx, so pdsc_process_adminq()'s read of qcq->intx for interrupt-credit return cannot race with the clear. - Free adminqcq before notifyqcq: the shared adminq ISR is released when adminqcq is freed, and the adminq work accesses notifyqcq, so both must be stopped before notifyqcq is freed.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Destroy workqueue after teardown.
- Cancel work and clear interrupt context.
- Free admin queue before notify queue.
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-2026-68318.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68318 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-2026-68318
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).
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The following list is the news that have been mention
CVE-2026-68318 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68318 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.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '224214eb4182ff20a665b615a90b66017539dd75', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '9e0f80fac50ab95dd75537c8ecaf5051d01f19b5', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': 'ecc7a7d7569ec1d6a61e18372696b9de97635156', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '0ad134881508c36b65c1a8864f8bec53adbd3327', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/amd/pds_core/core.c', 'drivers/net/ethernet/amd/pds_core/main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/amd/pds_core/core.c', 'drivers/net/ethernet/amd/pds_core/main.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '224214eb4182ff20a665b615a90b66017539dd75', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '9e0f80fac50ab95dd75537c8ecaf5051d01f19b5', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': 'ecc7a7d7569ec1d6a61e18372696b9de97635156', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '0ad134881508c36b65c1a8864f8bec53adbd3327', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/amd/pds_core/core.c', 'drivers/net/ethernet/amd/pds_core/main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/amd/pds_core/core.c', 'drivers/net/ethernet/amd/pds_core/main.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 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': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '224214eb4182ff20a665b615a90b66017539dd75', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '9e0f80fac50ab95dd75537c8ecaf5051d01f19b5', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': 'ecc7a7d7569ec1d6a61e18372696b9de97635156', 'versionType': 'git'}, {'status': 'affected', 'version': '01ba61b55b2041a39c54aefb3153c770dd59a0ef', 'lessThan': '0ad134881508c36b65c1a8864f8bec53adbd3327', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/amd/pds_core/core.c', 'drivers/net/ethernet/amd/pds_core/main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/amd/pds_core/core.c', 'drivers/net/ethernet/amd/pds_core/main.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: pds_core: fix use-after-free on workqueue during remove In pdsc_remove(), the workqueue is destroyed before pdsc_teardown() is called. This ordering allows two paths to queue work on the destroyed workqueue: 1. If pdsc_teardown() -> pdsc_devcmd_reset() times out, the error path in pdsc_devcmd_locked() queues health_work. 2. A NotifyQ event can trigger the ISR and queue work before free_irq() is called in pdsc_teardown(). Fix by moving destroy_workqueue() after pdsc_teardown() so the workqueue outlives every queuer; destroy_workqueue() then flushes any work still pending. Draining the queued work also requires ordering the teardown so the resources that work touches are freed last: - In pdsc_qcq_free(), after freeing the interrupt, cancel_work_sync() the queue's work and only then clear qcq->intx, so pdsc_process_adminq()'s read of qcq->intx for interrupt-credit return cannot race with the clear. - Free adminqcq before notifyqcq: the shared adminq ISR is released when adminqcq is freed, and the adminq work accesses notifyqcq, so both must be stopped before notifyqcq is freed. Added Reference https://git.kernel.org/stable/c/0ad134881508c36b65c1a8864f8bec53adbd3327 Added Reference https://git.kernel.org/stable/c/224214eb4182ff20a665b615a90b66017539dd75 Added Reference https://git.kernel.org/stable/c/9e0f80fac50ab95dd75537c8ecaf5051d01f19b5 Added Reference https://git.kernel.org/stable/c/ecc7a7d7569ec1d6a61e18372696b9de97635156