UBUNTU-CVE-2018-15572
The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.
02 / AFFECTED SOFTWARE
Affected packages
19 explicit affected versions
1 explicit affected versions
59 explicit affected versions
81 explicit affected versions
40 explicit affected versions
22 explicit affected versions
20 explicit affected versions
40 explicit affected versions
19 explicit affected versions
53 explicit affected versions
51 explicit affected versions
18 explicit affected versions
13 explicit affected versions
13 explicit affected versions
12 explicit affected versions
13 explicit affected versions
10 explicit affected versions
14 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fdf82a7856b32d905c39afc85e34364491e46346
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1
- https://git.kernel.org/linus/fdf82a7856b32d905c39afc85e34364491e46346
- https://github.com/torvalds/linux/commit/fdf82a7856b32d905c39afc85e34364491e46346
- https://ubuntu.com/security/CVE-2018-15572
- https://ubuntu.com/security/notices/USN-3775-1
- https://ubuntu.com/security/notices/USN-3775-2
- https://ubuntu.com/security/notices/USN-3776-1
- https://ubuntu.com/security/notices/USN-3776-2
- https://ubuntu.com/security/notices/USN-3777-1
- https://ubuntu.com/security/notices/USN-3777-2
- https://ubuntu.com/security/notices/USN-3777-3
- https://www.cve.org/CVERecord?id=CVE-2018-15572