UBUNTU-CVE-2018-17972
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
02 / AFFECTED SOFTWARE
Affected packages
143 explicit affected versions
21 explicit affected versions
6 explicit affected versions
61 explicit affected versions
83 explicit affected versions
42 explicit affected versions
2 explicit affected versions
29 explicit affected versions
25 explicit affected versions
45 explicit affected versions
21 explicit affected versions
55 explicit affected versions
53 explicit affected versions
23 explicit affected versions
18 explicit affected versions
20 explicit affected versions
17 explicit affected versions
18 explicit affected versions
15 explicit affected versions
20 explicit affected versions
26 explicit affected versions
51 explicit affected versions
6 explicit affected versions
12 explicit affected versions
1 explicit affected versions
1 explicit affected versions
23 explicit affected versions
1 explicit affected versions
3 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=680d86b71ff9779f770758eaf9cadee98465223c
- https://lore.kernel.org/patchwork/patch/992734/
- https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2
- https://ubuntu.com/security/CVE-2018-17972
- https://ubuntu.com/security/notices/USN-3821-1
- https://ubuntu.com/security/notices/USN-3821-2
- https://ubuntu.com/security/notices/USN-3832-1
- https://ubuntu.com/security/notices/USN-3835-1
- https://ubuntu.com/security/notices/USN-3871-1
- https://ubuntu.com/security/notices/USN-3871-3
- https://ubuntu.com/security/notices/USN-3871-4
- https://ubuntu.com/security/notices/USN-3871-5
- https://ubuntu.com/security/notices/USN-3880-1
- https://ubuntu.com/security/notices/USN-3880-2
- https://www.cve.org/CVERecord?id=CVE-2018-17972