VulnerabilityModified
CVE-2013-1956
The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions…
LOW 2.1EPSS 0.38%
Does this matter?
Lower severity and a low EPSS score (0.38%). Track it; it rarely justifies an emergency change on its own.
Description
The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.
- CVSS 2.0
- 2.1 LOWAV:L/AC:L/Au:N/C:N/I:P/A:N
- EPSS
- 0.38% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
- http://www.openwall.com/lists/oss-security/2013/04/16/11
- https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
- http://www.openwall.com/lists/oss-security/2013/04/16/11
- https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.