CVE-2026-72256: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_cluster: reject template conntracks in hash match xt_cluster_mt() treats any non-NULL nf_ct_get() result as a fully initialized conntrack and passes it to xt_cluster_hash(). This causes a state confusion bug when the raw table CT target attaches a template conntrack to skb->_nfct before normal conntrack processing. Templates carry IPS_TEMPLATE status but do not have a valid tuple for hashing yet, so xt_cluster_hash() can hit its WARN_ON() path on the zeroed l3num field. Reject template conntracks before hashing them. This matches existing netfilter handling for template objects and avoids hashing incomplete conntrack state.

Засегнати продукти

• Linux Linux: 0269ea4937343536ec7e85649932bc8c9686ea78 преди 4558bd7b47c7be82dffd837f27be8ea3ecee557d; 0269ea4937343536ec7e85649932bc8c9686ea78 преди d5f9d050b0b267227c1f02f11021872c7768a9cc; 0269ea4937343536ec7e85649932bc8c9686ea78 преди 4cb8b5f586e41c187942291cc0938006077fa79e; 0269ea4937343536ec7e85649932bc8c9686ea78 преди fac2fdac3baad9ffd12b3b0bba4374d4b3585d54; 0269ea4937343536ec7e85649932bc8c9686ea78 преди 13ea4f86cf738c74be2146886ac261988a631e62; 0269ea4937343536ec7e85649932bc8c9686ea78 преди 07f9ddbf5e799c24a3a52ec9bd7b729a6f6d69d5; 0269ea4937343536ec7e85649932bc8c9686ea78 преди 5b2d4f0010018a7aa3495aa1dbf1b7a34011e7aa; 0269ea4937343536ec7e85649932bc8c9686ea78 преди 5feba91006ec92da57acc1cc2e34df623b98541e
• Linux Linux: 2.6.30; преди 2.6.30; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-72256
• https://nvd.nist.gov/vuln/detail/CVE-2026-72256
• https://git.kernel.org/stable/c/4558bd7b47c7be82dffd837f27be8ea3ecee557d
• https://git.kernel.org/stable/c/d5f9d050b0b267227c1f02f11021872c7768a9cc
• https://git.kernel.org/stable/c/4cb8b5f586e41c187942291cc0938006077fa79e
• https://git.kernel.org/stable/c/fac2fdac3baad9ffd12b3b0bba4374d4b3585d54
• https://git.kernel.org/stable/c/13ea4f86cf738c74be2146886ac261988a631e62
• https://git.kernel.org/stable/c/07f9ddbf5e799c24a3a52ec9bd7b729a6f6d69d5
• https://git.kernel.org/stable/c/5b2d4f0010018a7aa3495aa1dbf1b7a34011e7aa
• https://git.kernel.org/stable/c/5feba91006ec92da57acc1cc2e34df623b98541e