High 7.8Published Apr 3, 2026

CVE-2026-23422dpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler

Updated under an hour ago (Oct 27, 2026, 3:50 PM ET)

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It affects Linux and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	77611cab5bdfff7a070ae574bbfba20a1de99d1b builds before 7def51cb9fb8b8d5342443372b8cf28d8fbd7f3d; from 34b56c16efd61325d80bf1d780d0e176be662f59 before b5bababe7703a7322bc59b803ab1587887a2a5e4; from f89e33c9c37f0001b730e23b3b05ab7b1ecface2 before c7becfe3e604d138bd53b8ac3111b2b3e8ec6b0e; from 2447edc367800ba914acf7ddd5d250416b45fb31 before fa4412cdc5178a48799bafcb8af28fd2fbf3d703; 1b381a638e1851d8cfdfe08ed9cdbec5295b18c9 builds before 00f42ace446f1e4bf84988f2281131f52cd32796; 31a7a0bbeb006bac2d9c81a2874825025214b6d8 builds before 28fd8ac1d49389cb230d712116f54e27ebec11b8; from 31a7a0bbeb006bac2d9c81a2874825025214b6d8 before 74badb9c20b1a9c02a95c735c6d3cd6121679c93; from 5.15.200 before 5.15.203; and 4 more ranges	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.15.200 before 5.15.203; from 6.1.163 before 6.1.167; from 6.6.124 before 6.6.130; from 6.12.70 before 6.12.77; from 6.18.10 before 6.18.17; from 6.19.1 before 6.19.7; 6.19; 7.0; and 6 more ranges	NVD

References

References

https://git.kernel.org/stable/c/7def51cb9fb8b8d5342443372b8cf28d8fbd7f3d	patch
https://git.kernel.org/stable/c/b5bababe7703a7322bc59b803ab1587887a2a5e4	patch
https://git.kernel.org/stable/c/c7becfe3e604d138bd53b8ac3111b2b3e8ec6b0e	patch
https://git.kernel.org/stable/c/fa4412cdc5178a48799bafcb8af28fd2fbf3d703	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://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.