Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-27394— tcp: Fix Use-After-Free in tcp_ao_connect_init

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在释放后重用问题。

CVSS 7.8 · High EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 7c2ffaf21bd67f73d21560995ce17eaf5fc1d37f< ca4fb6c6764b3f75b4f5aa81db1536291897ff7f affected
7c2ffaf21bd67f73d21560995ce17eaf5fc1d37f< 80e679b352c3ce5158f3f778cfb77eb767e586fb affected
6.7 affected
< 6.7 unaffected
6.8.9≤ 6.8.* unaffected
6.9≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-27394

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
tcp: Fix Use-After-Free in tcp_ao_connect_init
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7c2ffaf21bd67f73d21560995ce17eaf5fc1d37f ~ ca4fb6c6764b3f75b4f5aa81db1536291897ff7f -
Linux Linux 6.7 -

II. Public POCs for CVE-2024-27394

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-27394

请登录查看更多情报信息。

Other References for CVE-2024-27394 (2)

Same Patch Batch · Linux · 2024-05-09 · 6 CVEs total

CVE-2023-52654 7.8 HIGH io_uring/af_unix: disable sending io_uring over sockets
CVE-2024-27395 7.8 HIGH net: openvswitch: Fix Use-After-Free in ovs_ct_exit
CVE-2024-27396 7.8 HIGH net: gtp: Fix Use-After-Free in gtp_dellink
CVE-2024-27397 7.8 HIGH netfilter: nf_tables: use timestamp to check for set element timeout
CVE-2024-27393 7.5 HIGH xen-netfront: Add missing skb_mark_for_recycle

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-27394

No comments yet

Leave a comment