CVE-2026-90217

bpf: Compare iterator types during state pruning

CVE-2026-90217 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-90217, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

high

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0018

7th percentile

In the Linux kernel, the following vulnerability has been resolved: bpf: Compare iterator types during state pruning An iterator stack slot can be MEM_RCU or PTR_UNTRUSTED. These states must not be equal, or the verifier can prune an unsafe path. Compare the pointer type for STACK_ITER slots.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
linux · Debian 13.5 (trixie)	6.12.115-2	DEBIAN-CVE-2026-90217	Sep 23, 2026
linux · Debian 14	7.2.6-1	DEBIAN-CVE-2026-90217	Sep 23, 2026

Details

Published
September 17, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-90217

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