Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-64575

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
05/08/2026
Last modified:
19/08/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> bpf: tcp: fix double sock release on batch realloc<br /> <br /> bpf_iter_tcp_batch() releases the current batch via<br /> bpf_iter_tcp_put_batch(), which drops the socket refs and rewrites<br /> each slot with the socket cookie, then grows the batch. cur_sk/end_sk<br /> are kept for bpf_iter_tcp_resume(), but on realloc failure the function<br /> returns ERR_PTR() before resume runs, leaving cur_sk

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools