Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-47538

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
24/05/2024
Last modified:
18/09/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer()<br /> <br /> Need to call rxrpc_put_local() for peer candidate before kfree() as it<br /> holds a ref to rxrpc_local.<br /> <br /> [DH: v2: Changed to abstract the peer freeing code out into a function]

Impact

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.19.82 (including) 4.19.220 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.3.9 (including) 5.4 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.4.1 (including) 5.4.164 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.84 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.7 (excluding)
cpe:2.3:o:linux:linux_kernel:5.4:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.4:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.4:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.4:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.4:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.4:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools