UBUNTU-CVE-2026-23180
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().
02 / AFFECTED SOFTWARE
Affected packages
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03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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().
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/31a7a0bbeb006bac2d9c81a2874825025214b6d8
- https://git.kernel.org/stable/c/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9
- https://git.kernel.org/stable/c/2447edc367800ba914acf7ddd5d250416b45fb31
- https://git.kernel.org/stable/c/31a7a0bbeb006bac2d9c81a2874825025214b6d8
- https://git.kernel.org/stable/c/34b56c16efd61325d80bf1d780d0e176be662f59
- https://git.kernel.org/stable/c/77611cab5bdfff7a070ae574bbfba20a1de99d1b
- https://git.kernel.org/stable/c/f89e33c9c37f0001b730e23b3b05ab7b1ecface2
- https://ubuntu.com/security/CVE-2026-23180
- https://ubuntu.com/security/notices/USN-8278-1
- https://ubuntu.com/security/notices/USN-8278-2
- https://ubuntu.com/security/notices/USN-8289-1
- https://ubuntu.com/security/notices/USN-8289-2
- https://ubuntu.com/security/notices/USN-8296-1
- https://ubuntu.com/security/notices/USN-8296-2
- https://ubuntu.com/security/notices/USN-8393-1
- https://ubuntu.com/security/notices/USN-8440-1
- https://ubuntu.com/security/notices/USN-8493-1
- https://ubuntu.com/security/notices/USN-8493-2
- https://ubuntu.com/security/notices/USN-8499-1
- https://ubuntu.com/security/notices/USN-8527-1
- https://ubuntu.com/security/notices/USN-8528-1
- https://ubuntu.com/security/notices/USN-8547-1
- https://ubuntu.com/security/notices/USN-8547-2
- https://www.cve.org/CVERecord?id=CVE-2026-23180