Critical severity · published Aug 15, 2026
CVE-2026-74309
vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
10.0
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
26f8ce06af6475b33b0bc60261e9f5027f9af58f before 3ef0cfa77a3d526591be069850d186c255e3f0cc; 26f8ce06af6475b33b0bc60261e9f5027f9af58f before c6c7eae5de798442987619434171ac886035d57c; 26f8ce06af6475b33b0bc60261e9f5027f9af58f before 0d21a1d6375a05274291e32c1ab7cd57dbb69513; 6.14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74309
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74309
git.kernel.org
https://git.kernel.org/stable/c/0d21a1d6375a05274291e32c1ab7cd57dbb69513
git.kernel.org
https://git.kernel.org/stable/c/3ef0cfa77a3d526591be069850d186c255e3f0cc
git.kernel.org
https://git.kernel.org/stable/c/c6c7eae5de798442987619434171ac886035d57c
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