High severity · published Apr 3, 2026
CVE-2026-23422
dpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler
7.8
CVSS
0.1%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
dpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler
Commit 31a7a0bbeb00 ("dpaa2-switch: add bounds check for if_id in IRQ
handler") introduces a range check for if_id to avoid an out-of-bounds
access. If an out-of-bounds if_id is detected, the interrupt status is
not cleared. This may result in an interrupt storm.
Clear the interrupt status after detecting an out-of-bounds if_id to avoid
the problem.
Found by an experimental AI code review agent at Google.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.15.200 before 5.15.203; 6.1.163 before 6.1.167; 6.6.124 before 6.6.130; 6.12.70 before 6.12.77; 6.18.10 before 6.18.17; 6.19.1 before 6.19.7; +8 more · source: NVD
LI
Linux · Linux
77611cab5bdfff7a070ae574bbfba20a1de99d1b before 7def51cb9fb8b8d5342443372b8cf28d8fbd7f3d; 34b56c16efd61325d80bf1d780d0e176be662f59 before b5bababe7703a7322bc59b803ab1587887a2a5e4; f89e33c9c37f0001b730e23b3b05ab7b1ecface2 before c7becfe3e604d138bd53b8ac3111b2b3e8ec6b0e; 2447edc367800ba914acf7ddd5d250416b45fb31 before fa4412cdc5178a48799bafcb8af28fd2fbf3d703; 1b381a638e1851d8cfdfe08ed9cdbec5295b18c9 before 00f42ace446f1e4bf84988f2281131f52cd32796; 31a7a0bbeb006bac2d9c81a2874825025214b6d8 before 28fd8ac1d49389cb230d712116f54e27ebec11b8; +7 more · source: vendor
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7; V3.1.6; V3.1.5; V3.1.7 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7; V3.1.6; V3.1.5; V3.1.7 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23422
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23422
Patch
https://git.kernel.org/stable/c/00f42ace446f1e4bf84988f2281131f52cd32796
Patch
https://git.kernel.org/stable/c/28fd8ac1d49389cb230d712116f54e27ebec11b8
Patch
https://git.kernel.org/stable/c/74badb9c20b1a9c02a95c735c6d3cd6121679c93
Patch
https://git.kernel.org/stable/c/7def51cb9fb8b8d5342443372b8cf28d8fbd7f3d
Patch
https://git.kernel.org/stable/c/b5bababe7703a7322bc59b803ab1587887a2a5e4
Patch
https://git.kernel.org/stable/c/c7becfe3e604d138bd53b8ac3111b2b3e8ec6b0e
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