What is CVE-2023-52895?

CVE-2023-52895 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 6.1.7 onward and patched in 6.1.8. CVE-2023-52895 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52895?

CVE-2023-52895 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-2023-52895?

Yes, CVE-2023-52895 has been patched. Fixed versions include 6.1.8. If you are running Linux kernel 6.1.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52895 actively exploited?

CVE-2023-52895 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-2023-52895

Medium

In the Linux kernel, the following vulnerability has been resolved: io_uring/poll: don't reissue in case of poll race on multishot request A previous commit fixed a poll race that can occur, but it's only applicable for multishot requests. For a multishot request, we can safely ignore a spurious wakeup, as we never leave the waitqueue to begin with. A blunt reissue of a multishot armed request can cause us to leak a buffer, if they are ring provided. While this seems like a bug in itself, it's not really defined behavior to reissue a multishot request directly. It's less efficient to do so as well, and not required to rearm anything like it is for singleshot poll requests.

Package Linux Kernel

Published 2024-08-21

Last modified 2024-09-11

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-2023-52895 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 6.1.7 and later are affected. Fixed in 6.1.8 and their respective stable series.

Affected from

≥ 6.1.7

Fixed in

✓ 6.1.8 6.1.x

References

2 total

Kernel Git
https://git.kernel.org/stable/c/36fc7317cdb16cfeae0f879916995037bb615ac4

Patch
Kernel Git
https://git.kernel.org/stable/c/8caa03f10bf92cb8657408a6ece6a8a73f96ce13

Patch

Details

CVE ID CVE-2023-52895

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-08-21

Modified 2024-09-11

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52895?

CVE-2023-52895 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 6.1.7 onward and has been patched in 6.1.8. CVE-2023-52895 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52895?

CVE-2023-52895 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-2023-52895?

Yes. CVE-2023-52895 has been patched. Fixed versions include 6.1.8. If you are running Linux kernel 6.1.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52895 actively exploited?

No. CVE-2023-52895 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.