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.

Package Linux Kernel
Published 2026-09-25
Last modified 2026-09-25
Patch available
Yes

Affected versions

Linux kernel versions 5.3 and later are affected. Fixed in 7.2.7, 7.3-rc2 and their respective stable series.

Affected from
≥ 5.3
Fixed in
✓ 7.2.7 7.2.x ✓ 7.3-rc2

References

2 total

Frequently asked questions

  • What is CVE-2026-98019?

    CVE-2026-98019 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.3 onward and has been patched in 7.2.7 and 7.3-rc2. CVE-2026-98019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-98019?

    Yes. CVE-2026-98019 has been patched. Fixed versions include 7.2.7 and 7.3-rc2. If you are running Linux kernel 5.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-98019 actively exploited?

    No. CVE-2026-98019 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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