netfilter: nf_tables: add hook transactions for device deletions
Summary
| CVE | CVE-2026-63858 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-19 15:16:52 UTC |
| Updated | 2026-07-20 15:16:52 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: add hook transactions for device deletions Restore the flag that indicates that the hook is going away, ie. NFT_HOOK_REMOVE, but add a new transaction object to track deletion of hooks without altering the basechain/flowtable hook_list during the preparation phase. The existing approach that moves the hook from the basechain/flowtable hook_list to transaction hook_list breaks netlink dump path readers of this RCU-protected list. It should be possible use an array for nft_trans_hook to store the deleted hooks to compact the representation but I am not expecting many hook object, specially now that wildcard support for devices is in place. Note that the nft_trans_chain_hooks() list contains a list of struct nft_trans_hook objects for DELCHAIN and DELFLOWTABLE commands, while this list stores struct nft_hook objects for NEWCHAIN and NEWFLOWTABLE. Note that new commands can be updated to use nft_trans_hook for consistency. This patch also adapts the event notification path to deal with the list of hook transactions. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.001450000 probability, percentile 0.041620000 (date 2026-07-20)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected b6d9014a3335194590abdd2a2471ef5147a67645 4e69bfb32b2db323d9205fdb30e284481b37817c git | Not specified |
| CNA | Linux | Linux | affected b6d9014a3335194590abdd2a2471ef5147a67645 10f79dbd7719d1da9f5884d13060322d8729f091 git | Not specified |
| CNA | Linux | Linux | affected 7a248f9c74f9f62799718c12efd9e9e391d60b6f git | Not specified |
| CNA | Linux | Linux | affected f275989ad04159dbfc62cefb65ba9c5ba1d7c34f git | Not specified |
| CNA | Linux | Linux | affected 62d91062058b42bf70b2c3446aec397bb0ce15ee git | Not specified |
| CNA | Linux | Linux | affected 99180dec5ae582227219d1fdd0dd5ccf53ec7491 git | Not specified |
| CNA | Linux | Linux | affected 5.10.122 5.11 semver | Not specified |
| CNA | Linux | Linux | affected 5.15.47 5.16 semver | Not specified |
| CNA | Linux | Linux | affected 5.17.15 5.18 semver | Not specified |
| CNA | Linux | Linux | affected 5.18.4 5.19 semver | Not specified |
| CNA | Linux | Linux | affected 5.19 | Not specified |
| CNA | Linux | Linux | unaffected 5.19 semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.10 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/10f79dbd7719d1da9f5884d13060322d8729f091 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4e69bfb32b2db323d9205fdb30e284481b37817c | 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.