VDB
CVE-2011-4080
CVE-2011-4080
PUBLISHED
CVSS 4 MEDIUM
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.
EPSS 0.07% · 22.5th percentile
Risk Scores
CVSS 2.0
4
EPSS Score
0.07%
22.5th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
| linux | linux_kernel | 0 |
Exploit Intelligence
- https://github.com/torvalds/linux/commit/bfdc0b497faa82a0ba2f9dddcf109231dd519fcc (circl)
- [oss-security] 20111026 Re: CVE Request -- kernel: sysctl: restrict write access to dmesg_restrict (circl)
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 (circl)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bfdc0b497faa82a0ba2f9dddcf109231dd519fcc (circl)
Timeline
- May 24, 2012 CVE Published
- Feb 4, 2022 EPSS Score
- Mar 29, 2022 EPSS Score
- May 20, 2022 EPSS Score
- Jul 12, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Oct 26, 2022 EPSS Score
- Dec 18, 2022 EPSS Score
- Feb 9, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
- Apr 2, 2023 EPSS Score
- May 25, 2023 EPSS Score
References
- https://github.com/torvalds/linux/commit/bfdc0b497faa82a0ba2f9dddcf109231dd519fcc url
- [oss-security] 20111026 Re: CVE Request -- kernel: sysctl: restrict write access to dmesg_restrict mailing-list
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 url
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bfdc0b497faa82a0ba2f9dddcf109231dd519fcc url
- https://nvd.nist.gov/vuln/detail/CVE-2011-4080 advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bfdc0b497faa82a0ba2f9dddcf109231dd519fcc url