CVE-2026-23180

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux24ab724f8a4661b2dc8e696b41df93bdc108f7a1 < 77611cab5bdfff7a070ae574bbfba20a1de99d1baffected
LinuxLinux24ab724f8a4661b2dc8e696b41df93bdc108f7a1 < 34b56c16efd61325d80bf1d780d0e176be662f59affected
LinuxLinux24ab724f8a4661b2dc8e696b41df93bdc108f7a1 < f89e33c9c37f0001b730e23b3b05ab7b1ecface2affected
LinuxLinux24ab724f8a4661b2dc8e696b41df93bdc108f7a1 < 2447edc367800ba914acf7ddd5d250416b45fb31affected
LinuxLinux24ab724f8a4661b2dc8e696b41df93bdc108f7a1 < 1b381a638e1851d8cfdfe08ed9cdbec5295b18c9affected
LinuxLinux24ab724f8a4661b2dc8e696b41df93bdc108f7a1 < 31a7a0bbeb006bac2d9c81a2874825025214b6d8affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.200 <= 5.15.*unaffected
LinuxLinux6.1.163 <= 6.1.*unaffected
LinuxLinux6.6.124 <= 6.6.*unaffected
LinuxLinux6.12.70 <= 6.12.*unaffected
LinuxLinux6.18.10 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

References