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    <lastBuildDate>Wed, 07 Oct 2026 06:00:24 +0000</lastBuildDate>
    <item>
      <title>CVE-2021-47250 — net: ipv4: fix memory leak in netlbl_cipsov4_add_std</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2021-47250</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;net: ipv4: fix memory leak in netlbl_cipsov4_add_std&lt;/p&gt;
&lt;p&gt;Reported by syzkaller:
BUG: memory leak
unreferenced object 0xffff888105df7000 (size 64):
comm &amp;#34;syz-executor842&amp;#34;, pid 360, jiffies 4294824824 (age 22.546s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[&amp;lt;00000000e67ed558&amp;gt;] kmalloc include/linux/slab.h:590 [inline]
[&amp;lt;00000000e67ed558&amp;gt;] kzalloc include/linux/slab.h:720 [inline]
[&amp;lt;00000000e67ed558&amp;gt;] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline]
[&amp;lt;00000000e67ed558&amp;gt;] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416
[&amp;lt;0000000006040154&amp;gt;] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739
[&amp;lt;00000000204d7a1c&amp;gt;] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
[&amp;lt;00000000204d7a1c&amp;gt;] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800
[&amp;lt;00000000c0d6a995&amp;gt;] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504
[&amp;lt;00000000d78b9d2c&amp;gt;] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
[&amp;lt;000000009733081b&amp;gt;] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
[&amp;lt;000000009733081b&amp;gt;] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340
[&amp;lt;00000000d5fd43b8&amp;gt;] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929
[&amp;lt;000000000a2d1e40&amp;gt;] sock_sendmsg_nosec net/socket.c:654 [inline]
[&amp;lt;000000000a2d1e40&amp;gt;] sock_sendmsg+0x139/0x170 n…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;net: ipv4: fix memory leak in netlbl_cipsov4_add_std&lt;/p&gt;
&lt;p&gt;Reported by syzkaller:
BUG: memory leak
unreferenced object 0xffff888105df7000 (size 64):
comm &amp;#34;syz-executor842&amp;#34;, pid 360, jiffies 4294824824 (age 22.546s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[&amp;lt;00000000e67ed558&amp;gt;] kmalloc include/linux/slab.h:590 [inline]
[&amp;lt;00000000e67ed558&amp;gt;] kzalloc include/linux/slab.h:720 [inline]
[&amp;lt;00000000e67ed558&amp;gt;] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline]
[&amp;lt;00000000e67ed558&amp;gt;] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416
[&amp;lt;0000000006040154&amp;gt;] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739
[&amp;lt;00000000204d7a1c&amp;gt;] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
[&amp;lt;00000000204d7a1c&amp;gt;] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800
[&amp;lt;00000000c0d6a995&amp;gt;] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504
[&amp;lt;00000000d78b9d2c&amp;gt;] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
[&amp;lt;000000009733081b&amp;gt;] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
[&amp;lt;000000009733081b&amp;gt;] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340
[&amp;lt;00000000d5fd43b8&amp;gt;] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929
[&amp;lt;000000000a2d1e40&amp;gt;] sock_sendmsg_nosec net/socket.c:654 [inline]
[&amp;lt;000000000a2d1e40&amp;gt;] sock_sendmsg+0x139/0x170 n…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2021-47250</guid>
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