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I. Basic Information for CVE-2022-49183
Vulnerability Information

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Vulnerability Title
net/sched: act_ct: fix ref leak when switching zones
Source: NVD (National Vulnerability Database)
Vulnerability 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().
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞,该漏洞源于act_ct模块在切换区域或网络命名空间时未释放旧的ct条目引用,可能导致资源泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
LinuxLinux a95ea90deb3071c1ded77a05e91cfebc5238d908 ~ bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d -
LinuxLinux 5.17 -
II. Public POCs for CVE-2022-49183
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III. Intelligence Information for CVE-2022-49183
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IV. Related Vulnerabilities
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