CVE-2026-98019bpf: mark a NULL call argument precise
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b5dc0163d8fd78e64a7e21f309cf932fda34353e before b1fe6379e401b8ce0f561cb4d84af2b70b4343c3; from b5dc0163d8fd78e64a7e21f309cf932fda34353e before 69a9ad004ccf5d45e534c7d503f47f643abe64b7; from b5dc0163d8fd78e64a7e21f309cf932fda34353e before 1a3a10b030c96ea88868ccc060a16827c01eaa5a | CNA record |
References
- https://git.kernel.org/stable/c/b1fe6379e401b8ce0f561cb4d84af2b70b4343c3
- https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7
- https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.