xfrm: Fix skb double-free in xfrm_dev_direct_output()
Summary
| CVE | CVE-2026-92489 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-17 17:17:51 UTC |
| Updated | 2026-09-18 18:18:13 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: xfrm: Fix skb double-free in xfrm_dev_direct_output() A return value other than 1 from local_out() means that the skb has been consumed or its ownership was transferred. xfrm_dev_direct_output() nevertheless frees the skb on this path, causing a double-free when netfilter drops the packet and invalidating any other owner. Return the local_out() result directly, matching the ownership handling in xfrm_output_resume(). |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.004630000 probability, percentile 0.392520000 (date 2026-09-21)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected bfb9b9404a53a72524ce695551755117e9d3deb0 621871b696b108026bf4b44ed4085ffa2102f417 git | Not specified |
| CNA | Linux | Linux | affected a0395e96831adee8ffa016bf958e4dce9ece656e bc9297796bfdcc8d9609236e54519a4f38737aac git | Not specified |
| CNA | Linux | Linux | affected 5eddd76ec2fd1988f0a3450fde9730b10dd22992 02deb637e965950148752a304dd1471212dd6470 git | Not specified |
| CNA | Linux | Linux | affected 5eddd76ec2fd1988f0a3450fde9730b10dd22992 56a347950e661c1a7f8f31c43a2ea53c2323b6f4 git | Not specified |
| CNA | Linux | Linux | affected 5eddd76ec2fd1988f0a3450fde9730b10dd22992 2aed51fc58d9ce450e2c116efb956160fd06fa02 git | Not specified |
| CNA | Linux | Linux | affected d1d673a5bede3767252cff19c0ab1e5387c6f43f git | Not specified |
| CNA | Linux | Linux | affected 6.6.85 6.6.157 semver | Not specified |
| CNA | Linux | Linux | affected 6.12.21 6.12.110 semver | Not specified |
| CNA | Linux | Linux | affected 6.13.9 6.14 semver | Not specified |
| CNA | Linux | Linux | affected 6.14 | Not specified |
| CNA | Linux | Linux | unaffected 6.14 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.157 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.110 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.52 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.6 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/56a347950e661c1a7f8f31c43a2ea53c2323b6f4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/bc9297796bfdcc8d9609236e54519a4f38737aac | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2aed51fc58d9ce450e2c116efb956160fd06fa02 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/02deb637e965950148752a304dd1471212dd6470 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/621871b696b108026bf4b44ed4085ffa2102f417 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.