octeontx2-pf: fix SQB pointer leak on init failure
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.6
References 8
git.kernel.org
- stable/c/fca9c22633169a6c5d429a32e439121b6419e2be
- stable/c/42c2836f10ac0427dac9e9a923d6ee2189dec544
- stable/c/2cac2eac935ed7e0a9203204e036a1f6090ebc3d
- stable/c/148d7ec0a3a98839c320e6cdd112e2e88bfb091b
- stable/c/5e023fe2569e630ba23b5558ebe4bf4837af4d16
- stable/c/5df30f05db96552903680a17f858d250dfd9e86e
- stable/c/23d917acd9c9a9fd999688ec3fdde7aa58ab8a14
- stable/c/62e7df6d042aeebd5efb581074e28865c04477be