CVE-2026-53083
kernel: bpf: Fix RCU stall in bpf_fd_array_map_clear()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 24, 2026
Updated · July 24, 2026
Description
A flaw was found in the Linux kernel. A missing cond_resched() in the bpf_fd_array_map_clear() loop, specifically when handling BPF (Berkeley Packet Filter) PROG_ARRAY maps with numerous entries, can lead to an RCU (Read-Copy Update) stall. This can result in a Denial of Service (DoS) under heavy system load, as the kernel fails to yield CPU time, causing system unresponsiveness.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-820 · Missing Synchronization