What is CVE-2022-49890?

CVE-2022-49890 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 4.14 onward and patched in 4.14.299, 4.19.265, 5.4.224 and others. CVE-2022-49890 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49890?

CVE-2022-49890 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-2022-49890?

Yes, CVE-2022-49890 has been patched. Fixed versions include 4.14.299, 4.19.265, 5.4.224 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49890 actively exploited?

CVE-2022-49890 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-2022-49890

Medium

In the Linux kernel, the following vulnerability has been resolved: capabilities: fix potential memleak on error path from vfs_getxattr_alloc() In cap_inode_getsecurity(), we will use vfs_getxattr_alloc() to complete the memory allocation of tmpbuf, if we have completed the memory allocation of tmpbuf, but failed to call handler->get(...), there will be a memleak in below logic: |-- ret = (int)vfs_getxattr_alloc(mnt_userns, ...) | /* ^^^ alloc for tmpbuf */ |-- value = krealloc(*xattr_value, error + 1, flags) | /* ^^^ alloc memory */ |-- error = handler->get(handler, ...) | /* error! */ |-- *xattr_value = value | /* xattr_value is &tmpbuf (memory leak!) */ So we will try to free(tmpbuf) after vfs_getxattr_alloc() fails to fix it. [PM: subject line and backtrace tweaks]

Package Linux Kernel

Published 2025-05-01

Last modified 2025-10-01

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-2022-49890 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 4.14 and later are affected. Fixed in 4.14.299, 4.19.265, 5.4.224, 5.10.154, 5.15.78, 6.0.8, 6.1 and their respective stable series.

Affected from

≥ 4.14

Fixed in

✓ 4.14.299 4.14.x ✓ 4.19.265 4.19.x ✓ 5.4.224 5.4.x ✓ 5.10.154 5.10.x ✓ 5.15.78 5.15.x ✓ 6.0.8 6.0.x ✓ 6.1

References

7 total

Kernel Git
https://git.kernel.org/stable/c/0c3e6288da650d1ec911a259c77bc2d88e498603

Patch
Kernel Git
https://git.kernel.org/stable/c/2de8eec8afb75792440b8900a01d52b8f6742fd1

Patch
Kernel Git
https://git.kernel.org/stable/c/6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85

Patch
Kernel Git
https://git.kernel.org/stable/c/7480aeff0093d8c54377553ec6b31110bea37b4d

Patch
Kernel Git
https://git.kernel.org/stable/c/8cf0a1bc12870d148ae830a4ba88cfdf0e879cee

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2022-49890

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-05-01

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49890?

CVE-2022-49890 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 4.14 onward and has been patched in 4.14.299, 4.19.265, 5.4.224 and others. CVE-2022-49890 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49890?

CVE-2022-49890 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-2022-49890?

Yes. CVE-2022-49890 has been patched. Fixed versions include 4.14.299, 4.19.265, 5.4.224 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49890 actively exploited?

No. CVE-2022-49890 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.