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CVE-2024-27394

HIGH
Published 2024-05-09T16:37:11.495Z
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CVSS Score

V3.1
7.4
/10
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.044
Higher than 4.4% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Description

In the Linux kernel, the following vulnerability has been resolved:

tcp: Fix Use-After-Free in tcp_ao_connect_init

Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal
of tcp_ao_connect_init, is not part of the RCU read critical section, it
is possible that the RCU grace period will pass during the traversal and
the key will be free.

To prevent this, it should be changed to hlist_for_each_entry_safe.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

7c2ffaf21bd67f73d21560995ce17eaf5fc1d37f 7c2ffaf21bd67f73d21560995ce17eaf5fc1d37f
Linux

Linux

Affected Versions:

6.7 0 6.8.9 6.9
linux

linux_kernel

Affected Versions:

6.7
linux

linux_kernel

Affected Versions:

7c2ffaf21bd6 7c2ffaf21bd6 0 6.8.9 6.9

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-q3rg-6598-285v

Advisory Details

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix Use-After-Free in tcp_ao_connect_init Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal of tcp_ao_connect_init, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free. To prevent this, it should be changed to hlist_for_each_entry_safe.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-27394
WEB https://git.kernel.org/stable/c/80e679b352c3ce5158f3f778cfb77eb767e586fb
WEB https://git.kernel.org/stable/c/ca4fb6c6764b3f75b4f5aa81db1536291897ff7f

Advisory provided by GitHub Security Advisory Database. Published: May 14, 2024, Modified: July 3, 2024

References

https://git.kernel.org/stable/c/ca4fb6c6764b3f75b4f5aa81db1536291897ff7f
https://git.kernel.org/stable/c/80e679b352c3ce5158f3f778cfb77eb767e586fb
Published: 2024-05-09T16:37:11.495Z
Last Modified: 2025-05-04T09:04:03.796Z
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