UBUNTU-CVE-2017-7495
fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.
02 / AFFECTED SOFTWARE
Affected packages
119 explicit affected versions
37 explicit affected versions
59 explicit affected versions
17 explicit affected versions
15 explicit affected versions
35 explicit affected versions
32 explicit affected versions
44 explicit affected versions
38 explicit affected versions
43 explicit affected versions
10 explicit affected versions
50 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
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
- http://www.openwall.com/lists/oss-security/2017/05/15/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1450261
- https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824
- https://ubuntu.com/security/CVE-2017-7495
- https://ubuntu.com/security/notices/USN-3405-1
- https://ubuntu.com/security/notices/USN-3405-2
- https://ubuntu.com/security/notices/USN-3406-1
- https://ubuntu.com/security/notices/USN-3406-2
- https://www.cve.org/CVERecord?id=CVE-2017-7495