--- title: "CVE-2013-1957\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2013-1957?format=md keywords: index, follow --- # CVE-2013-1957 Publication date 24 April 2013 Last updated 4 July 2026 --- Ubuntu priority **High** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description The clone\_mnt function in fs/namespace.c in the Linux kernel before 3.8.6 does not properly restrict changes to the MNT\_READONLY flag, which allows local users to bypass an intended read-only property of a filesystem by leveraging a separate mount namespace. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 10.04 LTS lucid | Not affected | | 8.04 LTS hardy | Not affected | | linux-armadaxp | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-ec2 | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Not affected | | 8.04 LTS hardy | Not in release | | linux-fsl-imx51 | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-linaro-omap | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Ignored end of life | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-linaro-shared | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Ignored end of life | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-linaro-vexpress | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Ignored end of life | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-lts-backport-maverick | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-lts-backport-oneiric | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Not affected | | 8.04 LTS hardy | Not in release | | linux-lts-quantal | 12.10 quantal | Not in release | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | linux-mvl-dove | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-qcm-msm | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 11.10 oneiric | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Not in release | | linux-ti-omap4 | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2013-1957?format=md#patch-details) ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | linux | * Introduced by [0c55cfc](https://git.kernel.org/linus/0c55cfc4166d9a0f38de779bd4d75a90afbe7734), fixed by [90563b1](https://git.kernel.org/linus/90563b198e4c6674c63672fae1923da467215f45) * Introduced by [0c55cfc](https://git.kernel.org/linus/0c55cfc4166d9a0f38de779bd4d75a90afbe7734), fixed by [132c94e](https://git.kernel.org/linus/132c94e31b8bca8ea921f9f96a57d684fa4ae0a9) | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1957) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-1957) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-1957) * [Debian](https://security-tracker.debian.org/tracker/CVE-2013-1957) ### Other references * *