netfilter: nf_tables: make nft_object rhltable per table

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74565
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 13:18:02 UTC
Updated2026-08-17 06:19:54 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: make nft_object rhltable per table The nft_object rhltable is global, this allows for accessing objects that are being dismangled from lookup path by other existing netns. Given the nft_obj_destroy() releases the object inmediately, this might lead to use-after-free of these objects that are being released. Make the existing rhltable per table to address this issue to deal with with the nft_rcv_nl_event() path too. Update nft_obj_lookup() to take the table as non-const, otherwise, compiler complains when passing the objname_ht to rhltable_lookup().

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: 0.001160000 probability, percentile 0.019080000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4d44175aa5bb5f68772b1eb0306554812294ca52 1948e4f85b855618b5b9a27265f98d816f4cb7cb git Not specified
CNA Linux Linux affected 4d44175aa5bb5f68772b1eb0306554812294ca52 63ba12b664a2cd3220ed43e22c717715f4cc2ae8 git Not specified
CNA Linux Linux affected 4d44175aa5bb5f68772b1eb0306554812294ca52 7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af git Not specified
CNA Linux Linux affected 4d44175aa5bb5f68772b1eb0306554812294ca52 f4f699790590bd0896c48a71e9232a65198f92f0 git Not specified
CNA Linux Linux affected 5.1 Not specified
CNA Linux Linux unaffected 5.1 semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.44 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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