55623a9c83
Fixes the following security vulnerabilities: CVE-2017-8890 The inet_csk_clone_lock function in net/ipv4/inet_connection_sock.c in the Linux kernel through 4.10.15 allows attackers to cause a denial of service (double free) or possibly have unspecified other impact by leveraging use of the accept system call. CVE-2017-9074 The IPv6 fragmentation implementation in the Linux kernel through 4.11.1 does not consider that the nexthdr field may be associated with an invalid option, which allows local users to cause a denial of service (out-of-bounds read and BUG) or possibly have unspecified other impact via crafted socket and send system calls. CVE-2017-9075 The sctp_v6_create_accept_sk function in net/sctp/ipv6.c in the Linux kernel through 4.11.1 mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890. CVE-2017-9076 The dccp_v6_request_recv_sock function in net/dccp/ipv6.c in the Linux kernel through 4.11.1 mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890. CVE-2017-9077 The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel through 4.11.1 mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890. CVE-2017-9242 The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel through 4.11.3 is too late in checking whether an overwrite of an skb data structure may occur, which allows local users to cause a denial of service (system crash) via crafted system calls. Ref: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8890 Ref: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9074 Ref: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9075 Ref: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9076 Ref: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9077 Ref: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9242 Ref: https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.31 Signed-off-by: Jo-Philipp Wich <jo@mein.io>
79 lines
2 KiB
Diff
79 lines
2 KiB
Diff
--- a/net/Kconfig
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+++ b/net/Kconfig
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@@ -95,6 +95,9 @@ source "net/netlabel/Kconfig"
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endif # if INET
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+config SOCK_DIAG
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+ bool
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+
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config NETWORK_SECMARK
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bool "Security Marking"
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help
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--- a/net/core/Makefile
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+++ b/net/core/Makefile
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@@ -9,8 +9,9 @@ obj-$(CONFIG_SYSCTL) += sysctl_net_core.
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obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \
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neighbour.o rtnetlink.o utils.o link_watch.o filter.o \
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- sock_diag.o dev_ioctl.o tso.o sock_reuseport.o
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+ dev_ioctl.o tso.o sock_reuseport.o
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+obj-$(CONFIG_SOCK_DIAG) += sock_diag.o
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obj-$(CONFIG_XFRM) += flow.o
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obj-y += net-sysfs.o
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obj-$(CONFIG_PROC_FS) += net-procfs.o
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--- a/net/core/sock.c
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+++ b/net/core/sock.c
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@@ -1457,9 +1457,11 @@ void sk_destruct(struct sock *sk)
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static void __sk_free(struct sock *sk)
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{
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+#ifdef CONFIG_SOCK_DIAG
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if (unlikely(sock_diag_has_destroy_listeners(sk) && sk->sk_net_refcnt))
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sock_diag_broadcast_destroy(sk);
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else
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+#endif
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sk_destruct(sk);
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}
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--- a/net/ipv4/Kconfig
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+++ b/net/ipv4/Kconfig
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@@ -408,6 +408,7 @@ config INET_XFRM_MODE_BEET
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config INET_DIAG
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tristate "INET: socket monitoring interface"
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+ select SOCK_DIAG
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default y
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---help---
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Support for INET (TCP, DCCP, etc) socket monitoring interface used by
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--- a/net/unix/Kconfig
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+++ b/net/unix/Kconfig
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@@ -22,6 +22,7 @@ config UNIX
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config UNIX_DIAG
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tristate "UNIX: socket monitoring interface"
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depends on UNIX
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+ select SOCK_DIAG
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default n
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---help---
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Support for UNIX socket monitoring interface used by the ss tool.
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--- a/net/netlink/Kconfig
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+++ b/net/netlink/Kconfig
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@@ -4,6 +4,7 @@
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config NETLINK_DIAG
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tristate "NETLINK: socket monitoring interface"
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+ select SOCK_DIAG
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default n
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---help---
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Support for NETLINK socket monitoring interface used by the ss tool.
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--- a/net/packet/Kconfig
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+++ b/net/packet/Kconfig
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@@ -18,6 +18,7 @@ config PACKET
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config PACKET_DIAG
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tristate "Packet: sockets monitoring interface"
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depends on PACKET
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+ select SOCK_DIAG
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default n
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---help---
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Support for PF_PACKET sockets monitoring interface used by the ss tool.
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