What is CVE-2024-27390?

CVE-2024-27390 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.13 onward and patched in 5.15.153, 6.1.83, 6.6.23 and others. CVE-2024-27390 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27390?

CVE-2024-27390 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-2024-27390?

Yes, CVE-2024-27390 has been patched. Fixed versions include 5.15.153, 6.1.83, 6.6.23 and others. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27390 actively exploited?

CVE-2024-27390 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-27390

Medium

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()")) I think the synchronize_net() call in ipv6_mc_down() is not needed. Under load, synchronize_net() can last between 200 usec and 5 ms. KASAN seems to agree as well.

Package Linux Kernel

Published 2024-05-01

Last modified 2026-07-24

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

Affected versions

Linux kernel versions 5.13 and later are affected. Fixed in 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, 6.9 and their respective stable series.

Affected from

≥ 5.13

Fixed in

✓ 5.15.153 5.15.x ✓ 6.1.83 6.1.x ✓ 6.6.23 6.6.x ✓ 6.7.11 6.7.x ✓ 6.8.2 6.8.x ✓ 6.9

References

7 total

Kernel Git
https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8c

Patch
Kernel Git
https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373

Patch
Kernel Git
https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88

Patch
Kernel Git
https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7

Patch
Kernel Git
https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2024-27390

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-01

Modified 2026-07-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-27390?

CVE-2024-27390 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.13 onward and has been patched in 5.15.153, 6.1.83, 6.6.23 and others. CVE-2024-27390 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27390?

CVE-2024-27390 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-2024-27390?

Yes. CVE-2024-27390 has been patched. Fixed versions include 5.15.153, 6.1.83, 6.6.23 and others. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27390 actively exploited?

No. CVE-2024-27390 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.