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CVE-2026-98019

UnknownEPSS 0.17%

Last modified

CVE-2026-98019 is a vulnerability of currently unknown severity. In 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In 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.

Metrics

EPSS Probability
0.17%

5.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= b5dc0163d8fd78e64a7e21f309cf932fda34353e, < febbb66e682d8328f7c5bcbdd5e4291abab2e858; >= b5dc0163d8fd78e64a7e21f309cf932fda34353e, < 627089c278df58749f25686c6a3caf7e181b5951; >= b5dc0163d8fd78e64a7e21f309cf932fda34353e, < b1fe6379e401b8ce0f561cb4d84af2b70b4343c3; >= b5dc0163d8fd78e64a7e21f309cf932fda34353e, < 69a9ad004ccf5d45e534c7d503f47f643abe64b7; >= b5dc0163d8fd78e64a7e21f309cf932fda34353e, < 1a3a10b030c96ea88868ccc060a16827c01eaa5a
LinuxLinux5.3

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98019?
In 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.
How severe is CVE-2026-98019?
Severity scoring for CVE-2026-98019 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98019?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST