CVE-2026-23180
dpaa2-switch: add bounds check for if_id in IRQ handler
Description
In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: add bounds check for if_id in IRQ handler The IRQ handler extracts if_id from the upper 16 bits of the hardware status register and uses it to index into ethsw->ports[] without validation. Since if_id can be any 16-bit value (0-65535) but the ports array is only allocated with sw_attr.num_ifs elements, this can lead to an out-of-bounds read potentially. Add a bounds check before accessing the array, consistent with the existing validation in dpaa2_switch_rx().
INFO
Published Date :
Feb. 14, 2026, 5:15 p.m.
Last Modified :
Feb. 14, 2026, 5:15 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Validate if_id before accessing the ethsw->ports array.
- Ensure array indexing is within allocated bounds.
- Update IRQ handler for secure port access.
- Apply validated patch to the Linux kernel.
References to Advisories, Solutions, and Tools
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CVE-2026-23180.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23180 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-2026-23180
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).
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The following table lists the changes that have been made to the
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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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 14, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: add bounds check for if_id in IRQ handler The IRQ handler extracts if_id from the upper 16 bits of the hardware status register and uses it to index into ethsw->ports[] without validation. Since if_id can be any 16-bit value (0-65535) but the ports array is only allocated with sw_attr.num_ifs elements, this can lead to an out-of-bounds read potentially. Add a bounds check before accessing the array, consistent with the existing validation in dpaa2_switch_rx(). Added Reference https://git.kernel.org/stable/c/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9 Added Reference https://git.kernel.org/stable/c/2447edc367800ba914acf7ddd5d250416b45fb31 Added Reference https://git.kernel.org/stable/c/31a7a0bbeb006bac2d9c81a2874825025214b6d8 Added Reference https://git.kernel.org/stable/c/34b56c16efd61325d80bf1d780d0e176be662f59 Added Reference https://git.kernel.org/stable/c/77611cab5bdfff7a070ae574bbfba20a1de99d1b Added Reference https://git.kernel.org/stable/c/f89e33c9c37f0001b730e23b3b05ab7b1ecface2