CVE-2026-72023

Summary

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-pf: fix SQB pointer leak on init failure

otx2_init_hw_resources() initializes SQ aura and pool resources before several later setup steps. On failure, err_free_sq_ptrs only frees SQB pages, leaving the per-SQ sqb_ptrs arrays behind.

Use otx2_free_sq_res() for the SQ unwind path and let it free sqb_ptrs even when sq->sqe has not been allocated yet.

The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1.

An x86_64 allyesconfig build showed no new warnings. As we do not have an OcteonTX2 PF device and the corresponding AF mailbox setup to test with, no runtime testing was able to be performed.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxcaa2da34fd25a37e9fd43343b6966fb9d730a6d5 < 148d7ec0a3a98839c320e6cdd112e2e88bfb091baffected
LinuxLinuxcaa2da34fd25a37e9fd43343b6966fb9d730a6d5 < 5e023fe2569e630ba23b5558ebe4bf4837af4d16affected
LinuxLinuxcaa2da34fd25a37e9fd43343b6966fb9d730a6d5 < 5df30f05db96552903680a17f858d250dfd9e86eaffected
LinuxLinuxcaa2da34fd25a37e9fd43343b6966fb9d730a6d5 < 23d917acd9c9a9fd999688ec3fdde7aa58ab8a14affected
LinuxLinuxcaa2da34fd25a37e9fd43343b6966fb9d730a6d5 < 62e7df6d042aeebd5efb581074e28865c04477beaffected
LinuxLinux5.6affected
LinuxLinux0 < 5.6unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References