CVE-2026-43030: bpf: Fix regsafe() for pointers to packet
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix regsafe() for pointers to packet
In case rold->reg->range == BEYONDPKTEND && rcur->reg->range == N regsafe() may return true which may lead to current state with valid packet range not being explored. Fix the bug.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43030?
CVE-2026-43030 has a moderate severity rating due to potential issues with regsafe() leading to valid packet references.
How do I fix CVE-2026-43030?
To fix CVE-2026-43030, ensure you update to the version of the Linux kernel where this vulnerability has been patched.
Which versions of the Linux kernel are affected by CVE-2026-43030?
CVE-2026-43030 affects multiple versions of the Linux kernel prior to the patch that addresses this vulnerability.
What type of vulnerability is CVE-2026-43030?
CVE-2026-43030 is a logic flaw in the bpf subsystem related to the regsafe() function.
Can CVE-2026-43030 be exploited remotely?
There is potential for exploitation of CVE-2026-43030 through malicious crafted packets, which could be processed by the kernel.