CVE-2026-97616 (GCVE-0-2026-97616)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:22 – Updated: 2026-10-30 12:37
VLAI
Title
net/sched: act_api: release all action references on NEWACTION failure
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_api: release all action references on NEWACTION failure When a batched RTM_NEWACTION request replaces an existing action, tcf_idr_check_alloc() takes a temporary reference on it. If a later action fails to initialize, tcf_action_destroy() uses strict release semantics to clean up the actions initialized so far. For an action bound to a filter, the strict check returns -EPERM without dropping the temporary reference. This error also makes tcf_action_destroy() return before releasing subsequent entries. Any new action initialized between the bound action and the failing entry is leaked together with its reserved IDR slot, preventing reuse of its index. Use tcf_idr_release() to drop each reference held by the batch without rejecting bound actions. This allows cleanup to continue through all initialized entries and preserves the module reference release when an action is destroyed. Explicit action deletion and flushing retain their separate bind-count checks.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < b7133be1faa35b38f68d78a9f950f1dddf3eb8e5 (git)
Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < b83a51a83e85411c050c7b16cdc43b331c6565be (git)
Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < e469765708b1afa9b9565dbafca09e22ec4edfa7 (git)
Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < 1b5730a1c7def8993b3feba764008d1ff5c9dcea (git)
Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < f908c8a969946a45225fd7f9d9a85771e12ae0a8 (git)
Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < 64b36eaef6ea5ada9aea4c2cf87099aaa8a4869b (git)
Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < 048617743febf6530111cfb594e9bbbd7918bf67 (git)
Affected: 55334a5db5cd32b207ac697cec3ec8e078f345d4 , < 478eb5abb51931a152abab068f8a717b7ff480fd (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.15
Unaffected: 0 , < 3.15 (semver)
Unaffected: 5.10.273 , ≤ 5.10.* (semver)
Unaffected: 5.15.224 , ≤ 5.15.* (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "cve": "CVE-2026-97616",
      "id": "CVE-2026-97616",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-97616",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-97616.json",
      "version": "4"
    }
  }
}



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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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