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

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CVE-2026-52931

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/06/2026
Last modified:
08/07/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> batman-adv: tp_meter: avoid use of uninit sender vars<br /> <br /> batadv_tp_recv_ack() and batadv_tp_stop() are only valid for tp_vars in the<br /> BATADV_TP_SENDER role. When called with a BATADV_TP_RECEIVER role, it<br /> proceeds to read sender-only members that were never initialized, leading<br /> to undefined behavior.<br /> <br /> This can be triggered when a node that is currently acting as a receiver in<br /> an ongoing tp_meter session receives a malicious ACK packet.<br /> <br /> Guard against this by checking tp_vars-&gt;role immediately after the<br /> lookup and bailing out if it is not BATADV_TP_SENDER, before any of<br /> those members are accessed.

Impact

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

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.8 (including) 5.10.258 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.209 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.175 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.142 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.92 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.18.34 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 7.0.11 (excluding)
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools