Updated kernel packages that fix a number of security issues are now available for Red Hat Enterprise Linux 2.1 running on 32-bit architectures.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

These updated packages fix the following security issues :

* a flaw was found in the IPv4 forwarding base. This could allow a local, unprivileged user to cause a denial of service. (CVE-2007-2172, Important)

* a flaw was found in the handling of process death signals. This allowed a local, unprivileged user to send arbitrary signals to the suid-process executed by that user. Successful exploitation of this flaw depends on the structure of the suid-program and its signal handling. (CVE-2007-3848, Important)

* when accessing kernel memory locations, certain Linux kernel drivers registering a fault handler did not perform required range checks. A local, unprivileged user could use this flaw to gain read or write access to arbitrary kernel memory, or possibly cause a denial of service. (CVE-2008-0007, Important)

* a possible kernel memory leak was found in the Linux kernel Simple Internet Transition (SIT) INET6 implementation. This could allow a local, unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* missing capability checks were found in the SBNI WAN driver which could allow a local, unprivileged user to bypass intended capability restrictions. (CVE-2008-3525, Important)

* a flaw was found in the way files were written using truncate() or ftruncate(). This could allow a local, unprivileged user to acquire the privileges of a different group and obtain access to sensitive information. (CVE-2008-4210, Important)

* a race condition in the mincore system core allowed a local, unprivileged user to cause a denial of service. (CVE-2006-4814, Moderate)

* a flaw was found in the aacraid SCSI driver. This allowed a local, unprivileged user to make ioctl calls to the driver which should otherwise be restricted to privileged users. (CVE-2007-4308, Moderate)

* two buffer overflow flaws were found in the Integrated Services Digital Network (ISDN) subsystem. A local, unprivileged user could use these flaws to cause a denial of service. (CVE-2007-6063, CVE-2007-6151, Moderate)

* a flaw was found in the way core dump files were created. If a local, unprivileged user could make a root-owned process dump a core file into a user-writable directory, the user could gain read access to that core file, potentially compromising sensitive information.
(CVE-2007-6206, Moderate)

* a deficiency was found in the Linux kernel virtual file system (VFS) implementation. This could allow a local, unprivileged user to attempt file creation within deleted directories, possibly causing a denial of service. (CVE-2008-3275, Moderate)

All users of Red Hat Enterprise Linux 2.1 on 32-bit architectures should upgrade to these updated packages which address these vulnerabilities. For this update to take effect, the system must be rebooted.

This update addresses the following security issues :

  - Tavis Ormandy discovered a deficiency in the Linux     kernel 32-bit and 64-bit emulation. This could allow a     local, unprivileged user to prepare and run a specially     crafted binary which would use this deficiency to leak     uninitialized and potentially sensitive data.
    (CVE-2008-0598, Important)

  - a possible kernel memory leak was found in the Linux     kernel Simple Internet Transition (SIT) INET6     implementation. This could allow a local, unprivileged     user to cause a denial of service. (CVE-2008-2136,     Important)

  - missing capability checks were found in the SBNI WAN     driver which could allow a local user to bypass intended     capability restrictions. (CVE-2008-3525, Important)

  - the do_truncate() and generic_file_splice_write()     functions did not clear the setuid and setgid bits. This     could allow a local, unprivileged user to obtain access     to privileged information. (CVE-2008-4210, Important)

  - a buffer overflow flaw was found in Integrated Services     Digital Network (ISDN) subsystem. A local, unprivileged     user could use this flaw to cause a denial of service.
    (CVE-2007-6063, Moderate)

  - multiple NULL pointer dereferences were found in various     Linux kernel network drivers. These drivers were missing     checks for terminal validity, which could allow     privilege escalation. (CVE-2008-2812, Moderate)

  - a deficiency was found in the Linux kernel virtual     filesystem (VFS) implementation. This could allow a     local, unprivileged user to attempt file creation within     deleted directories, possibly causing a denial of     service. (CVE-2008-3275, Moderate)

This update also fixes the following bugs :

  - the incorrect kunmap function was used in     nfs_xdr_readlinkres. kunmap() was used where     kunmap_atomic() should have been. As a consequence, if     an NFSv2 or NFSv3 server exported a volume containing a     symlink which included a path equal to or longer than     the local system's PATH_MAX, accessing the link caused a     kernel oops. This has been corrected in this update.

  - mptctl_gettargetinfo did not check if pIoc3 was NULL     before using it as a pointer. This caused a kernel panic     in mptctl_gettargetinfo in some circumstances. A check     has been added which prevents this.

  - lost tick compensation code in the timer interrupt     routine triggered without apparent cause. When running     as a fully-virtualized client, this spurious triggering     caused the 64-bit version of Red Hat Enterprise Linux 3     to present highly inaccurate times. With this update the     lost tick compensation code is turned off when the     operating system is running as a fully-virtualized     client under Xen or VMware&reg;.

From Red Hat Security Advisory 2008:0973 :

Updated kernel packages that resolve several security issues and fix various bugs are now available for Red Hat Enterprise Linux 3.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update addresses the following security issues :

* Tavis Ormandy discovered a deficiency in the Linux kernel 32-bit and 64-bit emulation. This could allow a local, unprivileged user to prepare and run a specially crafted binary which would use this deficiency to leak uninitialized and potentially sensitive data.
(CVE-2008-0598, Important)

* a possible kernel memory leak was found in the Linux kernel Simple Internet Transition (SIT) INET6 implementation. This could allow a local, unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* missing capability checks were found in the SBNI WAN driver which could allow a local user to bypass intended capability restrictions.
(CVE-2008-3525, Important)

* the do_truncate() and generic_file_splice_write() functions did not clear the setuid and setgid bits. This could allow a local, unprivileged user to obtain access to privileged information.
(CVE-2008-4210, Important)

* a buffer overflow flaw was found in Integrated Services Digital Network (ISDN) subsystem. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2007-6063, Moderate)

* multiple NULL pointer dereferences were found in various Linux kernel network drivers. These drivers were missing checks for terminal validity, which could allow privilege escalation. (CVE-2008-2812, Moderate)

* a deficiency was found in the Linux kernel virtual filesystem (VFS) implementation. This could allow a local, unprivileged user to attempt file creation within deleted directories, possibly causing a denial of service. (CVE-2008-3275, Moderate)

This update also fixes the following bugs :

* the incorrect kunmap function was used in nfs_xdr_readlinkres.
kunmap() was used where kunmap_atomic() should have been. As a consequence, if an NFSv2 or NFSv3 server exported a volume containing a symlink which included a path equal to or longer than the local system's PATH_MAX, accessing the link caused a kernel oops. This has been corrected in this update.

* mptctl_gettargetinfo did not check if pIoc3 was NULL before using it as a pointer. This caused a kernel panic in mptctl_gettargetinfo in some circumstances. A check has been added which prevents this.

* lost tick compensation code in the timer interrupt routine triggered without apparent cause. When running as a fully-virtualized client, this spurious triggering caused the 64-bit version of Red Hat Enterprise Linux 3 to present highly inaccurate times. With this update the lost tick compensation code is turned off when the operating system is running as a fully-virtualized client under Xen or VMware(r).

All Red Hat Enterprise Linux 3 users should install this updated kernel which addresses these vulnerabilities and fixes these bugs.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
35323	RHEL 2.1 : kernel (RHSA-2009:0001)	Nessus	Red Hat Local Security Checks	2009/1/9	2021/1/14	high
60507	Scientific Linux Security Update : kernel on SL3.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	high
67763	Oracle Linux 3 : kernel (ELSA-2008-0973)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/8/24	high

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