by Kastro
Paper/Archive/CVE-2026-43208

CVE-2026-43208

Linux Linux — net: do not pass flow_id to set_rps_cpu()

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 41.5.415 × 208.3No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linux48aa30443e52c9666d5cd5e67532e475f212337e – < 5455a232edea6b946b99449f15ca771a8874a5a65455a232edea6b946b99449f15ca771a8874a5a6CNA
Linux48aa30443e52c9666d5cd5e67532e475f212337e – < ed712dc0d64dee5f0d05e4d8ca57711f8a9c850ced712dc0d64dee5f0d05e4d8ca57711f8a9c850cCNA
Linux48aa30443e52c9666d5cd5e67532e475f212337e – < 8a8a9fac9efa6423fd74938b940cb7d7317807188a8a9fac9efa6423fd74938b940cb7d731780718CNA
Linux6.186.18.16CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/5455a232edea6b946b99449f15ca771a8874a5a6refgit.kernel.org/stable/c/ed712dc0d64dee5f0d05e4d8ca57711f8a9c850crefgit.kernel.org/stable/c/8a8a9fac9efa6423fd74938b940cb7d731780718