What is CVE-2021-47344?

CVE-2021-47344 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). CVE-2021-47344 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47344?

CVE-2021-47344 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-2021-47344?

No patch is currently available for CVE-2021-47344. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47344 actively exploited?

CVE-2021-47344 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-2021-47344

Medium

In the Linux kernel, the following vulnerability has been resolved: media: zr364xx: fix memory leak in zr364xx_start_readpipe syzbot reported memory leak in zr364xx driver. The problem was in non-freed urb in case of usb_submit_urb() fail. backtrace: [<ffffffff82baedf6>] kmalloc include/linux/slab.h:561 [inline] [<ffffffff82baedf6>] usb_alloc_urb+0x66/0xe0 drivers/usb/core/urb.c:74 [<ffffffff82f7cce8>] zr364xx_start_readpipe+0x78/0x130 drivers/media/usb/zr364xx/zr364xx.c:1022 [<ffffffff84251dfc>] zr364xx_board_init drivers/media/usb/zr364xx/zr364xx.c:1383 [inline] [<ffffffff84251dfc>] zr364xx_probe+0x6a3/0x851 drivers/media/usb/zr364xx/zr364xx.c:1516 [<ffffffff82bb6507>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<ffffffff826018a9>] really_probe+0x159/0x500 drivers/base/dd.c:576

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-24

CVSS version 3.1

Patch available

Awaiting data

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-2021-47344 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

References

The following references provide additional information about CVE-2021-47344 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/021c294dff030f3ba38eb81e400ba123db32ecbc
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0a045eac8d0427b64577a24d74bb8347c905ac65
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0edd6759167295ea9969e89283b81017b4c688aa
Patch

9 patch commits total View all on NVD

Details

CVE ID CVE-2021-47344

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-24

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47344?

CVE-2021-47344 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) . CVE-2021-47344 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47344?

CVE-2021-47344 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-2021-47344?

No patch is currently available for CVE-2021-47344. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47344 actively exploited?

No — CVE-2021-47344 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. View CWE-401 on MITRE CWE →