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CVE-2026-72023 (GCVE-0-2026-72023)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:51 – Updated: 2026-08-23 12:46
VLAI
Title
octeontx2-pf: fix SQB pointer leak on init failure
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < fca9c22633169a6c5d429a32e439121b6419e2be (git)
Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < 42c2836f10ac0427dac9e9a923d6ee2189dec544 (git)
Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < 2cac2eac935ed7e0a9203204e036a1f6090ebc3d (git)
Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < 148d7ec0a3a98839c320e6cdd112e2e88bfb091b (git)
Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < 5e023fe2569e630ba23b5558ebe4bf4837af4d16 (git)
Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < 5df30f05db96552903680a17f858d250dfd9e86e (git)
Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < 23d917acd9c9a9fd999688ec3fdde7aa58ab8a14 (git)
Affected: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 , < 62e7df6d042aeebd5efb581074e28865c04477be (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.266 , ≤ 5.10.* (semver)
Unaffected: 5.15.217 , ≤ 5.15.* (semver)
Unaffected: 6.1.184 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix SQB pointer leak on init failure\n\notx2_init_hw_resources() initializes SQ aura and pool resources before\nseveral later setup steps. On failure, err_free_sq_ptrs only frees SQB\npages, leaving the per-SQ sqb_ptrs arrays behind.\n\nUse otx2_free_sq_res() for the SQ unwind path and let it free sqb_ptrs\neven when sq-\u003esqe has not been allocated yet.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\nOcteonTX2 PF device and the corresponding AF mailbox setup to test with,\nno runtime testing was able to be performed."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2026-08-15T05:51:48.629Z",
    "dateReserved": "2026-08-09T03:40:39.900Z",
    "dateUpdated": "2026-08-23T12:46:27.683Z",
    "state": "PUBLISHED"
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Manual inspection confirms that the bug is still\\npresent in v7.1.1.\\n\\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\\nOcteonTX2 PF device and the corresponding AF mailbox setup to test with,\\nno runtime testing was able to be performed.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"fca9c22633169a6c5d429a32e439121b6419e2be\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"42c2836f10ac0427dac9e9a923d6ee2189dec544\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"2cac2eac935ed7e0a9203204e036a1f6090ebc3d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"148d7ec0a3a98839c320e6cdd112e2e88bfb091b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"5e023fe2569e630ba23b5558ebe4bf4837af4d16\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"5df30f05db96552903680a17f858d250dfd9e86e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"23d917acd9c9a9fd999688ec3fdde7aa58ab8a14\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"caa2da34fd25a37e9fd43343b6966fb9d730a6d5\",\"lessThan\":\"62e7df6d042aeebd5efb581074e28865c04477be\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.6\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.6\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.266\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.217\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.184\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.148\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.101\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/148d7ec0a3a98839c320e6cdd112e2e88bfb091b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/23d917acd9c9a9fd999688ec3fdde7aa58ab8a14\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2cac2eac935ed7e0a9203204e036a1f6090ebc3d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/42c2836f10ac0427dac9e9a923d6ee2189dec544\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5df30f05db96552903680a17f858d250dfd9e86e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5e023fe2569e630ba23b5558ebe4bf4837af4d16\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/62e7df6d042aeebd5efb581074e28865c04477be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fca9c22633169a6c5d429a32e439121b6419e2be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T05:26:57+00:00",
      "cve": "CVE-2026-72023",
      "id": "CVE-2026-72023",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: octeontx2-pf: fix SQB pointer leak on init failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72023.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.