CVE-2026-74309
vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
Description
In the Linux kernel, the following vulnerability has been resolved: vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler Look up the IRQ index in oct_hw->irqs instead of assuming irq - irqs[0]. This supports non-contiguous IRQ numbers and avoids incorrect ring indexing when irqs[0] is not the base.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the latest version.
- Apply the relevant patch for vdpa/octeon_ep.
- Verify interrupt handler logic.
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-2026-74309.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74309 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-2026-74309
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-2026-74309 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74309 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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': '3ef0cfa77a3d526591be069850d186c255e3f0cc', 'versionType': 'git'}, {'status': 'affected', 'version': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': 'c6c7eae5de798442987619434171ac886035d57c', 'versionType': 'git'}, {'status': 'affected', 'version': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': '0d21a1d6375a05274291e32c1ab7cd57dbb69513', 'versionType': 'git'}], 'programFiles': ['drivers/vdpa/octeon_ep/octep_vdpa_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': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/vdpa/octeon_ep/octep_vdpa_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': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': '3ef0cfa77a3d526591be069850d186c255e3f0cc', 'versionType': 'git'}, {'status': 'affected', 'version': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': 'c6c7eae5de798442987619434171ac886035d57c', 'versionType': 'git'}, {'status': 'affected', 'version': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': '0d21a1d6375a05274291e32c1ab7cd57dbb69513', 'versionType': 'git'}], 'programFiles': ['drivers/vdpa/octeon_ep/octep_vdpa_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': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/vdpa/octeon_ep/octep_vdpa_main.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 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': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': '3ef0cfa77a3d526591be069850d186c255e3f0cc', 'versionType': 'git'}, {'status': 'affected', 'version': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': 'c6c7eae5de798442987619434171ac886035d57c', 'versionType': 'git'}, {'status': 'affected', 'version': '26f8ce06af6475b33b0bc60261e9f5027f9af58f', 'lessThan': '0d21a1d6375a05274291e32c1ab7cd57dbb69513', 'versionType': 'git'}], 'programFiles': ['drivers/vdpa/octeon_ep/octep_vdpa_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': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/vdpa/octeon_ep/octep_vdpa_main.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler Look up the IRQ index in oct_hw->irqs instead of assuming irq - irqs[0]. This supports non-contiguous IRQ numbers and avoids incorrect ring indexing when irqs[0] is not the base. Added Reference https://git.kernel.org/stable/c/0d21a1d6375a05274291e32c1ab7cd57dbb69513 Added Reference https://git.kernel.org/stable/c/3ef0cfa77a3d526591be069850d186c255e3f0cc Added Reference https://git.kernel.org/stable/c/c6c7eae5de798442987619434171ac886035d57c