# CVE-2024-27394: linux: In the Linux kernel, the following vulnerability has been resolved:  tcp: Fix Use-After-Free in tcp_ao_connect_init...

CVE-2024-27394 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-27394, released May 14, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-27394
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 14, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.8.9-1 | [DEBIAN-CVE-2024-27394](https://patchblox.com/security/data/fix/linux/debian-cve-2024-27394.md) | May 14, 2024 |
| Linux | linux Debian 14 | 6.8.9-1 | [DEBIAN-CVE-2024-27394](https://patchblox.com/security/data/fix/linux/debian-cve-2024-27394.md) | May 14, 2024 |

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