Linux

The iBCS routines in arch/i386/kernel/traps.c for Linux kernels 2.4.18 and earlier on x86 systems allow local users to kill arbitrary processes via a a binary compatibility interface (lcall).

Linux-iSCSI iSCSI implementation installs the iscsi.conf file with world-readable permissions on some operating systems, including Red Hat Linux Limbo Beta #1, which could allow local users to gain privileges by reading the cleartext CHAP password.

The UDP implementation in Linux 2.4.x kernels keeps the IP Identification field at 0 for all non-fragmented packets, which could allow remote attackers to determine that a target system is running Linux.

The encrypted loop device in Linux kernel 2.4.10 and earlier does not authenticate the entity that is encrypting data, which allows local users to modify encrypted data without knowing the key.

IRC connection tracking helper module in the netfilter subsystem for Linux 2.4.18-pre9 and earlier does not properly set the mask for conntrack expectations for incoming DCC connections, which could allow remote attackers to bypass intended firewall restrictions.

Linux kernel, and possibly other operating systems, allows remote attackers to read portions of memory via a series of fragmented ICMP packets that generate an ICMP TTL Exceeded response, which includes portions of the memory in the response packet.

Linux kernel 2.2.19 enables CAP_SYS_RESOURCE for setuid processes, which allows local users to exceed disk quota restrictions during execution of setuid programs.

The MAC module in Netfilter in Linux kernel 2.4.1 through 2.4.11, when configured to filter based on MAC addresses, allows remote attackers to bypass packet filters via small packets.

Linux kernel 2.0, 2.2 and 2.4 with syncookies enabled allows remote attackers to bypass firewall rules by brute force guessing the cookie.

Linux kernel before 2.4.11pre3 in multiple Linux distributions allows local users to cause a denial of service (crash) by starting the core vmlinux kernel, possibly related to poor error checking during ELF loading.

telnet daemon (telnetd) from the Linux netkit package before netkit-telnet-0.16 allows remote attackers to bypass authentication when telnetd is running with the -L command line option.

IRC DCC helper in the ip_masq_irc IP masquerading module 2.2 allows remote attackers to bypass intended firewall restrictions by causing the target system to send a "DCC SEND" request to a malicious server which listens on port 6667, which may cause the module to believe that…

Multiple TCP implementations could allow remote attackers to cause a denial of service (bandwidth and CPU exhaustion) by setting the maximum segment size (MSS) to a very small number and requesting large amounts of data, which generates more packets with less TCP-level data that…

Unknown vulnerabilities in the UDP port allocation for Linux kernel before 2.2.19 could allow local users to cause a denial of service (deadlock).

Signedness error in (1) getsockopt and (2) setsockopt for Linux kernel before 2.2.19 allows local users to cause a denial of service.

Unknown vulnerability in sockfilter for Linux kernel before 2.2.19 related to "boundary cases," with unknown impact.

Masquerading code for Linux kernel before 2.2.19 does not fully check packet lengths in certain cases, which may lead to a vulnerability.

The Linux kernel before 2.2.19 does not have unregister calls for (1) CPUID and (2) MSR drivers, which could cause a DoS (crash) by unloading and reloading the drivers.

Unknown vulnerability in binfmt_misc in the Linux kernel before 2.2.19, related to user pages.

Certain operations in Linux kernel before 2.2.19 on the x86 architecture copy the wrong number of bytes, which might allow attackers to modify memory, aka "User access asm bug on x86."

The System V (SYS5) shared memory implementation for Linux kernel before 2.2.19 could allow attackers to modify recently freed memory.

Unknown vulnerability in classifier code for Linux kernel before 2.2.19 could result in denial of service (hang).

Unknown vulnerabilities in strnlen_user for Linux kernel before 2.2.19, with unknown impact.

The "mxcsr P4" vulnerability in the Linux kernel before 2.2.17-14, when running on certain Intel CPUs, allows local users to cause a denial of service (system halt).

Kernel logging daemon (klogd) in Linux does not properly cleanse user-injected format strings, which allows local users to gain root privileges by triggering malformed kernel messages.

makewhatis in Linux man package allows local users to overwrite files via a symlink attack.

A system does not present an appropriate legal message or warning to a user who is accessing it.

The knfsd NFS server in Linux kernel 2.2.x allows remote attackers to cause a denial of service via a negative size value.

Linux xmonisdn package allows local users to gain root privileges by modifying the IFS or PATH environmental variables.

IP masquerading in Linux 2.2.x allows remote attackers to route UDP packets through the internal interface by modifying the external source IP address and port number to match those of an established connection.

Linux printtool sets the permissions of printer configuration files to be world-readable, which allows local attackers to obtain printer share passwords.

Vulnerability when Network Address Translation (NAT) is enabled in Linux 2.2.10 and earlier with ipchains, or FreeBSD 3.2 with ipfw, allows remote attackers to cause a denial of service (kernel panic) via a ping -R (record route) command.

strace allows local users to read arbitrary files via memory mapped file names.

Buffer overflow in Linux su command gives root access to local users.

Denial of service in Linux syslogd via a large number of connections.

Linux kernel before 2.3.18 or 2.2.13pre15, with SLIP and PPP options, allows local unprivileged users to forge IP packets via the TIOCSETD option on tty devices.

mknod in Linux 2.2 follows symbolic links, which could allow local users to overwrite files or gain privileges.

Remote attackers can cause a denial of service on Linux in.telnetd telnet daemon through a malformed TERM environmental variable.

Versions of rpcbind including Linux, IRIX, and Wietse Venema's rpcbind allow a remote attacker to insert and delete entries by spoofing a source address.

Linux ftpwatch program allows local users to gain root privileges.

Linux cfingerd could be exploited to gain root access.

A race condition in Linux 2.2.1 allows local users to read arbitrary memory from /proc files.

The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.

Linux 2.1.132 and earlier allows local users to cause a denial of service (resource exhaustion) by reading a large buffer from a random device (e.g. /dev/urandom), which cannot be interrupted until the read has completed.

fte-console in the fte package before 0.46b-4.1 does not drop root privileges, which allows local users to gain root access via the virtual console device.

KDE kppp allows local users to create a directory in an arbitrary location via the HOME environmental variable.

KDE klock allows local users to kill arbitrary processes by specifying an arbitrary PID in the .kss.pid file.

KDE allows local users to execute arbitrary commands by setting the KDEDIR environmental variable to modify the search path that KDE uses to locate its executables.

Nestea variation of teardrop IP fragmentation denial of service.

Linux bdash game has a buffer overflow that allows local users to gain root access.