Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2004-0427     A local denial of service vulnerability in do_fork() has     been found.

  - CVE-2005-0489     A local denial of service vulnerability in proc memory     handling has been found.

  - CVE-2004-0394     A buffer overflow in the panic handling code has been     found.

  - CVE-2004-0447     A local denial of service vulnerability through a NULL     pointer dereference in the IA64 process handling code     has been found.

  - CVE-2004-0554     A local denial of service vulnerability through an     infinite loop in the signal handler code has been found.

  - CVE-2004-0565     An information leak in the context switch code has been     found on the IA64 architecture.

  - CVE-2004-0685     Unsafe use of copy_to_user in USB drivers may disclose     sensitive information.

  - CVE-2005-0001     A race condition in the i386 page fault handler may     allow privilege escalation.

  - CVE-2004-0883     Multiple vulnerabilities in the SMB filesystem code may     allow denial of service or information disclosure.

  - CVE-2004-0949     An information leak discovered in the SMB filesystem     code.

  - CVE-2004-1016     A local denial of service vulnerability has been found     in the SCM layer.

  - CVE-2004-1333     An integer overflow in the terminal code may allow a     local denial of service vulnerability.

  - CVE-2004-0997     A local privilege escalation in the MIPS assembly code     has been found.

  - CVE-2004-1335     A memory leak in the ip_options_get() function may lead     to denial of service.

  - CVE-2004-1017     Multiple overflows exist in the io_edgeport driver which     might be usable as a denial of service attack vector.

  - CVE-2005-0124     Bryan Fulton reported a bounds checking bug in the     coda_pioctl function which may allow local users to     execute arbitrary code or trigger a denial of service     attack.

  - CVE-2003-0984     Inproper initialization of the RTC may disclose     information.

  - CVE-2004-1070     Insufficient input sanitising in the load_elf_binary()     function may lead to privilege escalation.

  - CVE-2004-1071     Incorrect error handling in the binfmt_elf loader may     lead to privilege escalation.

  - CVE-2004-1072     A buffer overflow in the binfmt_elf loader may lead to     privilege escalation or denial of service.

  - CVE-2004-1073     The open_exec function may disclose information.

  - CVE-2004-1074     The binfmt code is vulnerable to denial of service     through malformed a.out binaries.

  - CVE-2004-0138     A denial of service vulnerability in the ELF loader has     been found.

  - CVE-2004-1068     A programming error in the unix_dgram_recvmsg() function     may lead to privilege escalation.

  - CVE-2004-1234     The ELF loader is vulnerable to denial of service     through malformed binaries.

  - CVE-2005-0003     Crafted ELF binaries may lead to privilege escalation,     due to insufficient checking of overlapping memory     regions.

  - CVE-2004-1235     A race condition in the load_elf_library() and     binfmt_aout() functions may allow privilege escalation.

  - CVE-2005-0504     An integer overflow in the Moxa driver may lead to     privilege escalation.

  - CVE-2005-0384     A remote denial of service vulnerability has been found     in the PPP driver.

  - CVE-2005-0135     An IA64 specific local denial of service vulnerability     has been found in the unw_unwind_to_user() function.

The following matrix explains which kernel version for which architecture fixes the problems mentioned above :

                                   Debian 3.0 (woody)                 Source                           2.4.18-14.4                        Alpha architecture               2.4.18-15woody1                    Intel IA-32 architecture         2.4.18-13.2                        HP Precision architecture        62.4                               PowerPC architecture             2.4.18-1woody6                     PowerPC architecture/XFS         20020329woody1                     PowerPC architecture/benh        20020304woody1                     Sun Sparc architecture           22woody1

Updated kernel packages are now available as part of ongoing support and maintenance of Red Hat Enterprise Linux version 2.1. This is the sixth regular update.

The Linux kernel handles the basic functions of the operating system.

This is the sixth regular kernel update to Red Hat Enterprise Linux version 2.1. It updates a number of device drivers, and adds much improved SATA support.

This update includes fixes for several security issues :

Paul Starzetz of iSEC discovered various flaws in the ELF binary loader affecting kernels prior to 2.4.28. A local user could use these flaws to gain read access to executable-only binaries or possibly gain privileges. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2004-1070, CVE-2004-1071, CVE-2004-1072, and CVE-2004-1073 to these issues.

A missing serialization flaw in unix_dgram_recvmsg was discovered that affects kernels prior to 2.4.28. A local user could potentially make use of a race condition in order to gain privileges. (CVE-2004-1068)

Stefan Esser discovered various flaws including buffer overflows in the smbfs driver affecting kernels before 2.4.28. A local user may be able to cause a denial of service (crash) or possibly gain privileges.
In order to exploit these flaws the user would need to have control of a connected smb server. (CVE-2004-0883, CVE-2004-0949)

Conectiva discovered flaws in certain USB drivers affecting kernels before 2.4.27 which used the copy_to_user function on uninitialized structures. These flaws could allow local users to read small amounts of kernel memory. (CVE-2004-0685)

The ext3 code in kernels before 2.4.26 did not properly initialize journal descriptor blocks. A privileged local user could read portions of kernel memory. (CVE-2004-0177)

The following drivers have also been updated :

* tg3 v3.10 * e1000 v5.3.19-k2 * e100 v3.0.27-k2 * megaraid * megaraid2 v2.10.8.2

All Red Hat Enterprise Linux 2.1 users are advised to upgrade their kernels to the packages associated with their machine architectures and configurations as listed in this erratum.

Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2004-0427     A local denial of service vulnerability in do_fork() has     been found.

  - CVE-2005-0489     A local denial of service vulnerability in proc memory     handling has been found.

  - CVE-2004-0394     A buffer overflow in the panic handling code has been     found.

  - CVE-2004-0447     A local denial of service vulnerability through a NULL     pointer dereference in the IA64 process handling code     has been found.

  - CVE-2004-0554     A local denial of service vulnerability through an     infinite loop in the signal handler code has been found.

  - CVE-2004-0565     An information leak in the context switch code has been     found on the IA64 architecture.

  - CVE-2004-0685     Unsafe use of copy_to_user in USB drivers may disclose     sensitive information.

  - CVE-2005-0001     A race condition in the i386 page fault handler may     allow privilege escalation.

  - CVE-2004-0883     Multiple vulnerabilities in the SMB filesystem code may     allow denial of service or information disclosure.

  - CVE-2004-0949     An information leak discovered in the SMB filesystem     code.

  - CVE-2004-1016     A local denial of service vulnerability has been found     in the SCM layer.

  - CVE-2004-1333     An integer overflow in the terminal code may allow a     local denial of service vulnerability.

  - CVE-2004-0997     A local privilege escalation in the MIPS assembly code     has been found.

  - CVE-2004-1335     A memory leak in the ip_options_get() function may lead     to denial of service.

  - CVE-2004-1017     Multiple overflows exist in the io_edgeport driver which     might be usable as a denial of service attack vector.

  - CVE-2005-0124     Bryan Fulton reported a bounds checking bug in the     coda_pioctl function which may allow local users to     execute arbitrary code or trigger a denial of service     attack.

  - CVE-2003-0984     Inproper initialization of the RTC may disclose     information.

  - CVE-2004-1070     Insufficient input sanitising in the load_elf_binary()     function may lead to privilege escalation.

  - CVE-2004-1071     Incorrect error handling in the binfmt_elf loader may     lead to privilege escalation.

  - CVE-2004-1072     A buffer overflow in the binfmt_elf loader may lead to     privilege escalation or denial of service.

  - CVE-2004-1073     The open_exec function may disclose information.

  - CVE-2004-1074     The binfmt code is vulnerable to denial of service     through malformed a.out binaries.

  - CVE-2004-0138     A denial of service vulnerability in the ELF loader has     been found.

  - CVE-2004-1068     A programming error in the unix_dgram_recvmsg() function     may lead to privilege escalation.

  - CVE-2004-1234     The ELF loader is vulnerable to denial of service     through malformed binaries.

  - CVE-2005-0003     Crafted ELF binaries may lead to privilege escalation,     due to insufficient checking of overlapping memory     regions.

  - CVE-2004-1235     A race condition in the load_elf_library() and     binfmt_aout() functions may allow privilege escalation.

  - CVE-2005-0504     An integer overflow in the Moxa driver may lead to     privilege escalation.

  - CVE-2005-0384     A remote denial of service vulnerability has been found     in the PPP driver.

  - CVE-2005-0135     An IA64 specific local denial of service vulnerability     has been found in the unw_unwind_to_user() function.

The following matrix explains which kernel version for which architecture fixes the problems mentioned above :

                                   Debian 3.0 (woody)                 Source                           2.4.19-4                           Sun Sparc architecture           26woody1                           Little endian MIPS architecture  0.020911.1.woody5

Updated kernel packages that fix several security issues in Red Hat Enterprise Linux 3 are now available.

The Linux kernel handles the basic functions of the operating system.

This update includes fixes for several security issues :

A missing serialization flaw in unix_dgram_recvmsg was discovered that affects kernels prior to 2.4.28. A local user could potentially make use of a race condition in order to gain privileges. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2004-1068 to this issue.

Paul Starzetz of iSEC discovered various flaws in the ELF binary loader affecting kernels prior to 2.4.28. A local user could use thse flaws to gain read access to executable-only binaries or possibly gain privileges. (CVE-2004-1070, CVE-2004-1071, CVE-2004-1072, CVE-2004-1073)

A flaw when setting up TSS limits was discovered that affects AMD AMD64 and Intel EM64T architecture kernels prior to 2.4.23. A local user could use this flaw to cause a denial of service (crash) or possibly gain privileges. (CVE-2004-0812)

An integer overflow flaw was discovered in the ubsec_keysetup function in the Broadcom 5820 cryptonet driver. On systems using this driver, a local user could cause a denial of service (crash) or possibly gain elevated privileges. (CVE-2004-0619)

Stefan Esser discovered various flaws including buffer overflows in the smbfs driver affecting kernels prior to 2.4.28. A local user may be able to cause a denial of service (crash) or possibly gain privileges. In order to exploit these flaws the user would require control of a connected Samba server. (CVE-2004-0883, CVE-2004-0949)

SGI discovered a bug in the elf loader that affects kernels prior to 2.4.25 which could be triggered by a malformed binary. On architectures other than x86, a local user could create a malicious binary which could cause a denial of service (crash). (CVE-2004-0136)

Conectiva discovered flaws in certain USB drivers affecting kernels prior to 2.4.27 which used the copy_to_user function on uninitialized structures. These flaws could allow local users to read small amounts of kernel memory. (CVE-2004-0685)

All Red Hat Enterprise Linux 3 users are advised to upgrade their kernels to the packages associated with their machine architectures and configurations as listed in this erratum.

Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2004-0427     A local denial of service vulnerability in do_fork() has     been found.

  - CVE-2005-0489     A local denial of service vulnerability in proc memory     handling has been found.

  - CVE-2004-0394     A buffer overflow in the panic handling code has been     found.

  - CVE-2004-0447     A local denial of service vulnerability through a NULL     pointer dereference in the IA64 process handling code     has been found.

  - CVE-2004-0554     A local denial of service vulnerability through an     infinite loop in the signal handler code has been found.

  - CVE-2004-0565     An information leak in the context switch code has been     found on the IA64 architecture.

  - CVE-2004-0685     Unsafe use of copy_to_user in USB drivers may disclose     sensitive information.

  - CVE-2005-0001     A race condition in the i386 page fault handler may     allow privilege escalation.

  - CVE-2004-0883     Multiple vulnerabilities in the SMB filesystem code may     allow denial of service or information disclosure.

  - CVE-2004-0949     An information leak discovered in the SMB filesystem     code.

  - CVE-2004-1016     A local denial of service vulnerability has been found     in the SCM layer.

  - CVE-2004-1333     An integer overflow in the terminal code may allow a     local denial of service vulnerability.

  - CVE-2004-0997     A local privilege escalation in the MIPS assembly code     has been found.

  - CVE-2004-1335     A memory leak in the ip_options_get() function may lead     to denial of service.

  - CVE-2004-1017     Multiple overflows exist in the io_edgeport driver which     might be usable as a denial of service attack vector.

  - CVE-2005-0124     Bryan Fulton reported a bounds checking bug in the     coda_pioctl function which may allow local users to     execute arbitrary code or trigger a denial of service     attack.

  - CVE-2003-0984     Inproper initialization of the RTC may disclose     information.

  - CVE-2004-1070     Insufficient input sanitising in the load_elf_binary()     function may lead to privilege escalation.

  - CVE-2004-1071     Incorrect error handling in the binfmt_elf loader may     lead to privilege escalation.

  - CVE-2004-1072     A buffer overflow in the binfmt_elf loader may lead to     privilege escalation or denial of service.

  - CVE-2004-1073     The open_exec function may disclose information.

  - CVE-2004-1074     The binfmt code is vulnerable to denial of service     through malformed a.out binaries.

  - CVE-2004-0138     A denial of service vulnerability in the ELF loader has     been found.

  - CVE-2004-1068     A programming error in the unix_dgram_recvmsg() function     may lead to privilege escalation.

  - CVE-2004-1234     The ELF loader is vulnerable to denial of service     through malformed binaries.

  - CVE-2005-0003     Crafted ELF binaries may lead to privilege escalation,     due to insufficient checking of overlapping memory     regions.

  - CVE-2004-1235     A race condition in the load_elf_library() and     binfmt_aout() functions may allow privilege escalation.

  - CVE-2005-0504     An integer overflow in the Moxa driver may lead to     privilege escalation.

  - CVE-2005-0384     A remote denial of service vulnerability has been found     in the PPP driver.

  - CVE-2005-0135     An IA64 specific local denial of service vulnerability     has been found in the unw_unwind_to_user() function.

The following matrix explains which kernel version for which architecture fixes the problems mentioned above :

                               Debian 3.0 (woody)             Source                       2.4.16-1woody2                 arm/lart                     20040419woody1                 arm/netwinder                20040419woody1                 arm/riscpc                   20040419woody1

The remote host is affected by the vulnerability described in GLSA-200408-24 (Linux Kernel: Multiple information leaks)

    The Linux kernel allows a local attacker to obtain sensitive kernel     information by gaining access to kernel memory via several leaks in the     /proc interfaces. These vulnerabilities exist in various drivers which     make up a working Linux kernel, some of which are present across all     architectures and configurations.
    CAN-2004-0415 deals with addressing invalid 32 to 64 bit conversions in     the kernel, as well as insecure direct access to file offset pointers     in kernel code which can be modified by the open(...), lseek(...) and     other core system I/O functions by an attacker.
    CAN-2004-0685 deals with certain USB drivers using uninitialized     structures and then using the copy_to_user(...) kernel call to copy     these structures. This may leak uninitialized kernel memory, which can     contain sensitive information from user applications.
    Finally, a race condition with the /proc/.../cmdline node was found,     allowing environment variables to be read while the process was still     spawning. If the race is won, environment variables of the process,     which might not be owned by the attacker, can be read.
  Impact :

    These vulnerabilities allow a local unprivileged attacker to access     segments of kernel memory or environment variables which may contain     sensitive information. Kernel memory may contain passwords, data     transferred between processes and any memory which applications did not     clear upon exiting as well as the kernel cache and kernel buffers.
    This information may be used to read sensitive data, open other attack     vectors for further exploitation or cause a Denial of Service if the     attacker can gain superuser access via the leaked information.
  Workaround :

    There is no temporary workaround for any of these information leaks     other than totally disabling /proc support - otherwise, a kernel     upgrade is required. A list of unaffected kernels is provided along     with this announcement.

Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2004-0427     A local denial of service vulnerability in do_fork() has     been found.

  - CVE-2005-0489     A local denial of service vulnerability in proc memory     handling has been found.

  - CVE-2004-0394     A buffer overflow in the panic handling code has been     found.

  - CVE-2004-0447     A local denial of service vulnerability through a NULL     pointer dereference in the IA64 process handling code     has been found.

  - CVE-2004-0554     A local denial of service vulnerability through an     infinite loop in the signal handler code has been found.

  - CVE-2004-0565     An information leak in the context switch code has been     found on the IA64 architecture.

  - CVE-2004-0685     Unsafe use of copy_to_user in USB drivers may disclose     sensitive information.

  - CVE-2005-0001     A race condition in the i386 page fault handler may     allow privilege escalation.

  - CVE-2004-0883     Multiple vulnerabilities in the SMB filesystem code may     allow denial of service or information disclosure.

  - CVE-2004-0949     An information leak discovered in the SMB filesystem     code.

  - CVE-2004-1016     A local denial of service vulnerability has been found     in the SCM layer.

  - CVE-2004-1333     An integer overflow in the terminal code may allow a     local denial of service vulnerability.

  - CVE-2004-0997     A local privilege escalation in the MIPS assembly code     has been found.

  - CVE-2004-1335     A memory leak in the ip_options_get() function may lead     to denial of service.

  - CVE-2004-1017     Multiple overflows exist in the io_edgeport driver which     might be usable as a denial of service attack vector.

  - CVE-2005-0124     Bryan Fulton reported a bounds checking bug in the     coda_pioctl function which may allow local users to     execute arbitrary code or trigger a denial of service     attack.

  - CVE-2003-0984     Inproper initialization of the RTC may disclose     information.

  - CVE-2004-1070     Insufficient input sanitising in the load_elf_binary()     function may lead to privilege escalation.

  - CVE-2004-1071     Incorrect error handling in the binfmt_elf loader may     lead to privilege escalation.

  - CVE-2004-1072     A buffer overflow in the binfmt_elf loader may lead to     privilege escalation or denial of service.

  - CVE-2004-1073     The open_exec function may disclose information.

  - CVE-2004-1074     The binfmt code is vulnerable to denial of service     through malformed a.out binaries.

  - CVE-2004-0138     A denial of service vulnerability in the ELF loader has     been found.

  - CVE-2004-1068     A programming error in the unix_dgram_recvmsg() function     may lead to privilege escalation.

  - CVE-2004-1234     The ELF loader is vulnerable to denial of service     through malformed binaries.

  - CVE-2005-0003     Crafted ELF binaries may lead to privilege escalation,     due to insufficient checking of overlapping memory     regions.

  - CVE-2004-1235     A race condition in the load_elf_library() and     binfmt_aout() functions may allow privilege escalation.

  - CVE-2005-0504     An integer overflow in the Moxa driver may lead to     privilege escalation.

  - CVE-2005-0384     A remote denial of service vulnerability has been found     in the PPP driver.

  - CVE-2005-0135     An IA64 specific local denial of service vulnerability     has been found in the unw_unwind_to_user() function.

The following matrix explains which kernel version for which architecture fixes the problems mentioned above :

                                Debian 3.1 (sarge)              Source                        2.4.17-1woody4                  HP Precision architecture     32.5                            Intel IA-64 architecture      011226.18                       IBM S/390 architecture/image  2.4.17-2.woody.5                IBM S/390 architecture/patch  0.0.20020816-0.woody.4          PowerPC architecture (apus)   2.4.17-6                        MIPS architecture             2.4.17-0.020226.2.woody7

ID	Name	Product	Family	Published	Updated	Severity
22611	Debian DSA-1069-1 : kernel-source-2.4.18 - several vulnerabilities	Nessus	Debian Local Security Checks	10/14/2006	1/4/2021	critical
15958	RHEL 2.1 : kernel (RHSA-2004:505)	Nessus	Red Hat Local Security Checks	12/14/2004	1/14/2021	high
22612	Debian DSA-1070-1 : kernel-source-2.4.19 - several vulnerabilities	Nessus	Debian Local Security Checks	10/14/2006	1/4/2021	critical
15944	RHEL 3 : kernel (RHSA-2004:549)	Nessus	Red Hat Local Security Checks	12/13/2004	1/14/2021	high
22609	Debian DSA-1067-1 : kernel-source-2.4.16 - several vulnerabilities	Nessus	Debian Local Security Checks	10/14/2006	1/4/2021	critical
14580	GLSA-200408-24 : Linux Kernel: Multiple information leaks	Nessus	Gentoo Local Security Checks	8/30/2004	1/6/2021	medium
22624	Debian DSA-1082-1 : kernel-source-2.4.17 - several vulnerabilities	Nessus	Debian Local Security Checks	10/14/2006	1/4/2021	critical

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