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CVE-2008-4554

Publication date 15 October 2008

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

The do_splice_from function in fs/splice.c in the Linux kernel before 2.6.27 does not reject file descriptors that have the O_APPEND flag set, which allows local users to bypass append mode and make arbitrary changes to other locations in the file.

From the Ubuntu Security Team

Olaf Kirch and Miklos Szeredi discovered that the Linux kernel did not correctly reject the "append" flag when handling file splice requests. A local attacker could bypass append mode and make changes to arbitrary locations in a file. This issue only affected Ubuntu 7.10 and 8.04.

Status

Package Ubuntu Release Status
linux 8.10 intrepid
Not affected
8.04 LTS hardy
Fixed 2.6.24-22.45
7.10 gutsy Not in release
6.06 LTS dapper Not in release
linux-source-2.6.15 8.10 intrepid Not in release
8.04 LTS hardy Not in release
7.10 gutsy Not in release
6.06 LTS dapper
Not affected
linux-source-2.6.22 8.10 intrepid Not in release
8.04 LTS hardy Not in release
7.10 gutsy
Fixed 2.6.22-16.60
6.06 LTS dapper Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

References

Related Ubuntu Security Notices (USN)

    • USN-679-1
    • Linux kernel vulnerabilities
    • 27 November 2008

Other references