CVE-2022-49183
Linux Kernel NetSched act_ct Reference Leak
Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: fix ref leak when switching zones When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcf_ct_skb_nfct_cached() returns false and tcf_ct_flow_table_lookup() may simply overwrite it. The fix is to, as the ct entry is not reusable, free it already at tcf_ct_skb_nfct_cached().
INFO
Published Date :
Feb. 26, 2025, 7 a.m.
Last Modified :
March 17, 2025, 6:56 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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CVE-2022-49183.
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-2022-49183 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49183 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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Initial Analysis by [email protected]
Mar. 17, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10.103 up to (excluding) 5.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15.26 up to (excluding) 5.15.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16.12 up to (including) 5.16.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (including) 5.17.2 Added Reference Type kernel.org: https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: fix ref leak when switching zones When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcf_ct_skb_nfct_cached() returns false and tcf_ct_flow_table_lookup() may simply overwrite it. The fix is to, as the ct entry is not reusable, free it already at tcf_ct_skb_nfct_cached(). Added Reference https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1 Added Reference https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a Added Reference https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159 Added Reference https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49183 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-2022-49183
weaknesses.