7.8

CVE-2024-27394

tcp: Fix Use-After-Free in tcp_ao_connect_init

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.7 < 6.8.9
Linux ≫ Linux Kernel Version 6.9 Update rc1
Linux ≫ Linux Kernel Version 6.9 Update rc2
Linux ≫ Linux Kernel Version 6.9 Update rc3
Linux ≫ Linux Kernel Version 6.9 Update rc4
Linux ≫ Linux Kernel Version 6.9 Update rc5
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.176
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 7.4 1.4 5.9
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/80e679b352c3ce5158f3f778cfb77eb767e586fb
Patch
https://git.kernel.org/stable/c/ca4fb6c6764b3f75b4f5aa81db1536291897ff7f
Patch