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Unscored Public exploit CVE-2008-4302 EUVD-2008-4285GHSA-vxc2-696q-6c9j

fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the add_to_page_cache_lru fun…

Published Sep 29, 2008 · Updated Aug 7, 2024 · Assigned by mitre

Description

fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the add_to_page_cache_lru function, and subsequently attempts to unlock a page that was not locked, which allows local users to cause a denial of service (kernel BUG and system crash), as demonstrated by the fio I/O tool.

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 4.0 fai-kernels 1.17+etch.22etch3 DSA-1653-1
Debian 4.0 linux-2.6 2.6.18.dfsg.1-22etch3 DSA-1653-1
Debian 4.0 user-mode-linux 2.6.18-1um-2etch.22etch3 DSA-1653-1

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 5 kernel +12 2.6.18-92.1.18.el5 RHSA-2008:0957

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References