bpf: mark a NULL call argument precise

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98019
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:30 UTC
Updated2026-09-25 11:17:30 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf: mark a NULL call argument precise check_func_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. check_helper_call() enforces second parameter of the bpf_get_local_storage() to be zero, w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Grouping these two into one patch, as they share the same fixes tag.

Risk And Classification

EPSS: 0.001550000 probability, percentile 0.039800000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected b5dc0163d8fd78e64a7e21f309cf932fda34353e 69a9ad004ccf5d45e534c7d503f47f643abe64b7 git Not specified
CNA Linux Linux affected b5dc0163d8fd78e64a7e21f309cf932fda34353e 1a3a10b030c96ea88868ccc060a16827c01eaa5a git Not specified
CNA Linux Linux affected 5.3 Not specified
CNA Linux Linux unaffected 5.3 semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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