CVE-2021-23133

01/תיאור (מקור, אנגלית)

A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket.

02/מוצרים מושפעים

linux: linux kernel; fedoraproject: fedora; debian: debian linux; netapp: cloud backup; netapp: solidfire \& hci management node; broadcom: brocade fabric operating system; netapp: h410c firmware; netapp: h410c; netapp: h300s firmware; netapp: h300s; netapp: h500s firmware; netapp: h500s; netapp: h700s firmware; netapp: h700s; netapp: h300e firmware

03/קישורים10

• git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/com‮… Mailing ListPatchVendor Advisory
• git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/com‮… Mailing ListPatchVendor Advisory
• www.openwall.com/lists/oss-security/2021/05/10/1 Mailing ListPatchThird Party Advisory
• www.openwall.com/lists/oss-security/2021/05/10/2 Mailing ListPatchThird Party Advisory
• www.openwall.com/lists/oss-security/2021/05/10/3 Mailing ListPatchThird Party Advisory
• www.openwall.com/lists/oss-security/2021/05/10/4 Mailing ListPatchThird Party Advisory
• www.openwall.com/lists/oss-security/2021/04/18/2 ExploitMailing ListPatchThird Party Advisory
• www.openwall.com/lists/oss-security/2021/05/10/1 Mailing ListPatchThird Party Advisory
• www.openwall.com/lists/oss-security/2021/05/10/2 Mailing ListPatchThird Party Advisory
• www.openwall.com/lists/oss-security/2021/05/10/3 Mailing ListPatchThird Party Advisory