CVE-2024-39503
"Netfilter Ipset Race Condition Use After Free"
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type Lion Ackermann reported that there is a race condition between namespace cleanup in ipset and the garbage collection of the list:set type. The namespace cleanup can destroy the list:set type of sets while the gc of the set type is waiting to run in rcu cleanup. The latter uses data from the destroyed set which thus leads use after free. The patch contains the following parts: - When destroying all sets, first remove the garbage collectors, then wait if needed and then destroy the sets. - Fix the badly ordered "wait then remove gc" for the destroy a single set case. - Fix the missing rcu locking in the list:set type in the userspace test case. - Use proper RCU list handlings in the list:set type. The patch depends on c1193d9bbbd3 (netfilter: ipset: Add list flush to cancel_gc).
INFO
Published Date :
July 12, 2024, 1:15 p.m.
Last Modified :
Nov. 21, 2024, 9:27 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
Public PoC/Exploit Available at Github
CVE-2024-39503 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
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information, practical solutions, and valuable tools related to
CVE-2024-39503.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-39503 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-39503 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0f1bb77c6d837c9513943bc7c08f04c5cc5c6568 Added Reference https://git.kernel.org/stable/c/2ba35b37f780c6410bb4bba9c3072596d8576702 Added Reference https://git.kernel.org/stable/c/390b353d1a1da3e9c6c0fd14fe650d69063c95d6 Added Reference https://git.kernel.org/stable/c/4e7aaa6b82d63e8ddcbfb56b4fd3d014ca586f10 Added Reference https://git.kernel.org/stable/c/90ae20d47de602198eb69e6cd7a3db3420abfc08 Added Reference https://git.kernel.org/stable/c/93b53c202b51a69e42ca57f5a183f7e008e19f83 Added Reference https://git.kernel.org/stable/c/c0761d1f1ce1d5b85b5e82bbb714df12de1aa8c3 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 12, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type Lion Ackermann reported that there is a race condition between namespace cleanup in ipset and the garbage collection of the list:set type. The namespace cleanup can destroy the list:set type of sets while the gc of the set type is waiting to run in rcu cleanup. The latter uses data from the destroyed set which thus leads use after free. The patch contains the following parts: - When destroying all sets, first remove the garbage collectors, then wait if needed and then destroy the sets. - Fix the badly ordered "wait then remove gc" for the destroy a single set case. - Fix the missing rcu locking in the list:set type in the userspace test case. - Use proper RCU list handlings in the list:set type. The patch depends on c1193d9bbbd3 (netfilter: ipset: Add list flush to cancel_gc). Added Reference kernel.org https://git.kernel.org/stable/c/c0761d1f1ce1d5b85b5e82bbb714df12de1aa8c3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/93b53c202b51a69e42ca57f5a183f7e008e19f83 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0f1bb77c6d837c9513943bc7c08f04c5cc5c6568 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/390b353d1a1da3e9c6c0fd14fe650d69063c95d6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2ba35b37f780c6410bb4bba9c3072596d8576702 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/90ae20d47de602198eb69e6cd7a3db3420abfc08 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4e7aaa6b82d63e8ddcbfb56b4fd3d014ca586f10 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-39503 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-39503
weaknesses.