linux linux kernel 2.6.21.5 vulnerabilities and exploits

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The kill_something_info function in kernel/signal.c in the Linux kernel prior to 2.6.28 does not consider PID namespaces when processing signals directed to PID -1, which allows local users to bypass the intended namespace isolation, and send arbitrary signals to all processes in...

The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel prior to 2.6.20.15, 2.6.21.x prior to 2.6.21.6, and prior to 2.6.22 allows remote malicious users to cause a denial of service (crash) via an encoded, out-of-range index value for a choice fi...

Integer overflow in the dccp_setsockopt_change function in net/dccp/proto.c in the Datagram Congestion Control Protocol (DCCP) subsystem in the Linux kernel 2.6.17-rc1 up to and including 2.6.26.2 allows remote malicious users to cause a denial of service (panic) via a crafted in...

Integer underflow in the e1000_clean_rx_irq function in drivers/net/e1000/e1000_main.c in the e1000 driver in the Linux kernel prior to 2.6.30-rc8, the e1000e driver in the Linux kernel, and Intel Wired Ethernet (aka e1000) prior to 7.5.5 allows remote malicious users to cause a ...

Double free vulnerability in the xfrm6_tunnel_rcv function in net/ipv6/xfrm6_tunnel.c in the Linux kernel prior to 2.6.22, when the xfrm6_tunnel module is enabled, allows remote malicious users to cause a denial of service (panic) via crafted IPv6 packets.

The signal handling in the Linux kernel prior to 2.6.22, including 2.6.2, when running on PowerPC systems using HTX, allows local users to cause a denial of service via unspecified vectors involving floating point corruption and concurrency, related to clearing of MSR bits.

fs/nfs/client.c in the Linux kernel prior to 2.6.23 does not properly initialize a certain structure member that stores the maximum NFS filename length, which allows local users to cause a denial of service (OOPS) via a long filename, related to the encode_lookup function.

The sctp_rcv_ootb function in the SCTP implementation in the Linux kernel prior to 2.6.23 allows remote malicious users to cause a denial of service (infinite loop) via (1) an Out Of The Blue (OOTB) chunk or (2) a chunk of zero length.

VFS in the Linux kernel prior to 2.6.22.16, and 2.6.23.x prior to 2.6.23.14, performs tests of access mode by using the flag variable instead of the acc_mode variable, which might allow local users to bypass intended permissions and remove directories.

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