- Description
- The sysrq_sysctl_handler function in kernel/sysctl.c in the Linux kernel before 2.6.39 does not require the CAP_SYS_ADMIN capability to modify the dmesg_restrict value, which allows local users to bypass intended access restrictions and read the kernel ring buffer by leveraging root privileges, as demonstrated by a root user in a Linux Containers (aka LXC) environment.
- Source
- secalert@redhat.com
- NVD status
- Modified
CVSS 2.0
- Type
- Primary
- Base score
- 4
- Impact score
- 6.9
- Exploitability score
- 1.9
- Vector string
- AV:L/AC:H/Au:N/C:C/I:N/A:N
- nvd@nist.gov
- CWE-264
- Hype score
- Not currently trending
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "176353CE-F17E-4776-AD9F-19014DA75B76",
"versionEndExcluding": "2.6.39"
}
],
"operator": "OR"
}
]
}
]