CVE-2026-43208

linux: In the Linux kernel, the following vulnerability has been resolved: net: do not pass flow_id to set_rps_cpu() Blame...

CVE-2026-43208 is fixed in 23 products on 1 platform, first by ALAS2023-2026-1702, released May 11, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
9.8
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0048
41st percentile

In the Linux kernel, the following vulnerability has been resolved: net: do not pass flow_id to set_rps_cpu() Blamed commit made the assumption that the RPS table for each receive queue would have the same size, and that it would not change. Compute flow_id in set_rps_cpu(), do not assume we can use the value computed by get_rps_cpu(). Otherwise we risk out-of-bound access and/or crashes.

Where it's fixed

ProductFixed inFixReleased
Linux
bpftool6.18 · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
bpftool6.18-debuginfo · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel-livepatch-6.18.16-18.222 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18 · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-debuginfo · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-debuginfo-common-aarch64 · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-debuginfo-common-x86_64 · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-devel · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-headers · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-libbpf · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-libbpf-debuginfo · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-libbpf-devel · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-libbpf-static · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-modules-extra · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-modules-extra-common · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-tools · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-tools-debuginfo · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
kernel6.18-tools-devel · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
linux · Debian 14 6.19.6-1 DEBIAN-CVE-2026-43208 May 15, 2026
perf6.18 · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
perf6.18-debuginfo · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
python3-perf6.18 · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026
python3-perf6.18-debuginfo · amzn 2023 1:6.18.16-18.222.amzn2023 ALAS2023-2026-1702 May 11, 2026

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