Linux kernel O_DIRECT information leak
|linux-odirect-information-leak (11249)||Medium Risk|
Linux kernel fails to properly handle the O_DIRECT feature, which could result in an information leak. A local attacker with write privileges on the system could exploit this vulnerability to read portions of previously deleted files, and possibly corrupt the file system.
For Red Hat Linux:
Upgrade to the latest kernel package, as listed below. Refer to RHSA-2003:025-20 for more information. See References.
Red Hat 7.1, 7.2, and 7.3: 2.4.18-24.7.x or later
Red Hat 8.0: 2.4.18-24.8.0 or later
For Mandrake Linux:
Upgrade to the latest kernel package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2003:014:kernel for more information. See References.
Mandrake Linux 9.0: 220.127.116.11mdk-1-1mdk or later
For Debian GNU/Linux 3.0 (woody) containing the kernel package:
Upgrade to the latest kernel package (2.4.18-1 or later), as listed in DSA-358-4. See References.
For Debian GNU/Linux 3.0 (woody) containing the kernel-image-2.4.17-ia64 package:
Upgrade to the latest kernel-image-2.4.17-ia64 package (011226.15 or later), as listed in DSA-423-1. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
- CIAC Information Bulletin O-059: Debian Linux-Kernel-2.4.14-ia64 Vulnerabilities.
- BID-6763: Linux O_DIRECT Direct Input/Output Information Leak Vulnerability
- CVE-2003-0018: Linux kernel 2.4.10 through 2.4.21-pre4 does not properly handle the O_DIRECT feature, which allows local attackers with write privileges to read portions of previously deleted files, or cause file system corruption.
- DSA-358: linux-kernel-2.4.18 -- several vulnerabilities
- DSA-423: linux-kernel-2.4.17-ia64 -- several vulnerabilities
- MDKSA-2003:014: Updated kernel packages fix a number of bugs
- OSVDB ID: 28024: Linux Kernel O_DIRECT Multiple Race Condition Local Information Disclosure
- OSVDB ID: 4457: Linux Kernel O_DIRECT Deleted File Retrieval or File System Corruption
- RHSA-2003-025: Updated 2.4 kernel fixes various vulnerabilities
- Debian Debian Linux 3.0
- Linux Kernel 2.4.10
- Linux Kernel 2.4.11
- Linux Kernel 2.4.12
- Linux Kernel 2.4.13
- Linux Kernel 2.4.14
- Linux Kernel 2.4.15
- Linux Kernel 2.4.16
- Linux Kernel 2.4.17
- Linux Kernel 2.4.18
- Linux Kernel 2.4.19
- MandrakeSoft Mandrake Linux 9.0
- RedHat Linux 7.1
- RedHat Linux 7.2
- RedHat Linux 7.3
- RedHat Linux 8.0
Feb 03, 2003
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