CVE-2026-46298
pseries/papr-hvpipe: Fix race with interrupt handler
Description
In the Linux kernel, the following vulnerability has been resolved: pseries/papr-hvpipe: Fix race with interrupt handler While executing ->ioctl handler or ->release handler, if an interrupt fires on the same cpu, then we can enter into a deadlock. This patch fixes both these handlers to take spin_lock_irq{save|restore} versions of the lock to prevent this deadlock.
INFO
Published Date :
June 8, 2026, 5:16 p.m.
Last Modified :
July 23, 2026, 8:10 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Apply kernel patch for pseries/papr-hvpipe race condition.
- Use spin_lock_irqsave in interrupt handlers.
- Ensure interrupt safety in handlers.
- Update Linux kernel to resolved version.
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-2026-46298.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/342c966f81cfc3cb6c297e80b37a9f3a5d637d2c | Patch |
| https://git.kernel.org/stable/c/7a4f0846ee6cc8cf44ae0046ed42e3259d1dd45b | Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46298 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-2026-46298
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-2026-46298 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46298 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 Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: Linux, Description: En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: pseries/papr-hvpipe: Corregir condición de carrera con el gestor de interrupciones Mientras se ejecuta el gestor ->ioctl o el gestor ->release, si se dispara una interrupción en la misma CPU, entonces podemos entrar en un interbloqueo. Este parche corrige ambos gestores para usar las versiones spin_lock_irq{save|restore} del bloqueo para prevenir este interbloqueo. -
Initial Analysis by [email protected]
Jul. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-362 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.18 up to (excluding) 7.0.7 Added Reference Type kernel.org: https://git.kernel.org/stable/c/342c966f81cfc3cb6c297e80b37a9f3a5d637d2c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7a4f0846ee6cc8cf44ae0046ed42e3259d1dd45b Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 17, 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': '814ef095f12c9fa142043ee689500f3a41bb6dab', 'lessThan': '342c966f81cfc3cb6c297e80b37a9f3a5d637d2c', 'versionType': 'git'}, {'status': 'affected', 'version': '814ef095f12c9fa142043ee689500f3a41bb6dab', 'lessThan': '7a4f0846ee6cc8cf44ae0046ed42e3259d1dd45b', 'versionType': 'git'}], 'programFiles': ['arch/powerpc/platforms/pseries/papr-hvpipe.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.0.7', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/powerpc/platforms/pseries/papr-hvpipe.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 08, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: pseries/papr-hvpipe: Fix race with interrupt handler While executing ->ioctl handler or ->release handler, if an interrupt fires on the same cpu, then we can enter into a deadlock. This patch fixes both these handlers to take spin_lock_irq{save|restore} versions of the lock to prevent this deadlock. Added Reference https://git.kernel.org/stable/c/342c966f81cfc3cb6c297e80b37a9f3a5d637d2c Added Reference https://git.kernel.org/stable/c/7a4f0846ee6cc8cf44ae0046ed42e3259d1dd45b