In the Linux kernel, the following vulnerability has been resolved: bpf: Properly mark live registers for indirect jumps For a `gotox rX` instruction the rX register should be marked as used in the compute_insn_live_regs() function. Fix this.

A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) subsystem. This vulnerability arises from the kernel's failure to correctly identify and mark active registers during indirect jump operations within the BPF program execution. An attacker could potentially exploit this to manipulate the kernel's state, leading to unexpected system behavior or a bypass of security controls, which may result in information disclosure.

Red Hat Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Affected kernel Red Hat Enterprise Linux 7 Affected kernel-rt Red Hat Enterprise Linux 8 Affected kernel Red Hat Enterprise Linux 8 Affected kernel-rt Red Hat Enterprise Linux 9 Affected kernel Red Hat Enterprise Linux 9 Affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43321 https://nvd.nist.gov/vuln/detail/CVE-2026-43321 https://lore.kernel.org/linux-cve-announce/2026050819-CVE-2026-43321-6554@gregkh/T