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High severity7.8NVD Advisory· Published May 14, 2024· Updated Aug 4, 2026

CVE-2024-27394

CVE-2024-27394

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.

Affected products

9
  • Linux/Kernelllm-fuzzy8 versions
    (expand)+ 7 more
    • (no CPE)
    • (no CPE)range: 6.7
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.7,<6.8.9
    • cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*
  • osv-coords
    pkg:linux/kernel
    Range: >= 6.7.0, < 6.8.9

Patches

Vulnerability mechanics

References

2

News mentions

0

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