What is CVE-2021-47345?

CVE-2021-47345 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 2.6.18 onward and patched in 4.4.276, 4.9.276, 4.14.240 and others. CVE-2021-47345 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47345?

CVE-2021-47345 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47345?

Yes, CVE-2021-47345 has been patched. Fixed versions include 4.4.276, 4.9.276, 4.14.240 and others. If you are running Linux kernel 2.6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47345 actively exploited?

CVE-2021-47345 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2021-47345

Medium

In the Linux kernel, the following vulnerability has been resolved: RDMA/cma: Fix rdma_resolve_route() memory leak Fix a memory leak when "mda_resolve_route() is called more than once on the same "rdma_cm_id". This is possible if cma_query_handler() triggers the RDMA_CM_EVENT_ROUTE_ERROR flow which puts the state machine back and allows rdma_resolve_route() to be called again.

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-24

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-401

CVE-2021-47345 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.18 and later are affected. Fixed in 4.4.276, 4.9.276, 4.14.240, 4.19.198, 5.4.133, 5.10.51, 5.12.18, 5.13.3, 5.14 and their respective stable series.

Affected from

≥ 2.6.18

Fixed in

✓ 4.4.276 4.4.x ✓ 4.9.276 4.9.x ✓ 4.14.240 4.14.x ✓ 4.19.198 4.19.x ✓ 5.4.133 5.4.x ✓ 5.10.51 5.10.x ✓ 5.12.18 5.12.x ✓ 5.13.3 5.13.x ✓ 5.14

References

9 total

Kernel Git
https://git.kernel.org/stable/c/032c68b4f5be128a2167f35b558b7cec88fe4972

Patch
Kernel Git
https://git.kernel.org/stable/c/07583ba2e2d8947c3d365d97608cb436510885ac

Patch
Kernel Git
https://git.kernel.org/stable/c/3d08b5917984f737f32d5bee9737b9075c3895c6

Patch
Kernel Git
https://git.kernel.org/stable/c/40b613db3a95bc27998e4097d74c2f7e5d083a0b

Patch
Kernel Git
https://git.kernel.org/stable/c/4893c938f2a140a74be91779e45e4a7fa111198f

Patch

Showing 5 of 9 references View all on NVD

Details

CVE ID CVE-2021-47345

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47345?

CVE-2021-47345 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 2.6.18 onward and has been patched in 4.4.276, 4.9.276, 4.14.240 and others. CVE-2021-47345 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47345?

CVE-2021-47345 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47345?

Yes. CVE-2021-47345 has been patched. Fixed versions include 4.4.276, 4.9.276, 4.14.240 and others. If you are running Linux kernel 2.6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47345 actively exploited?

No. CVE-2021-47345 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.