CVE-2017-7533
What it is
Race condition in the fsnotify implementation in the Linux kernel through 4.12.4 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that leverages simultaneous execution of the inotify_handle_event and vfs_rename functions.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.2% in the next 30 days (EPSS).
- Severity: 7.0 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.2% · EPSS, next 30 days
- Weakness
- CWE-362 · Race condition
- Record status
- Modified
Affected
- Linux Kernel < 3.16.47
- Linux Kernel < 3.18.64
- Linux Kernel < 4.4.80
- Linux Kernel < 4.9.41
- Linux Kernel < 4.12.5
Attack profile CVSS 3.1 · 7.0
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2017-7533.md and follow it. Check whether this project is affected by CVE-2017-7533. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e
- http://openwall.com/lists/oss-security/2017/08/03/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1468283
- https://github.com/torvalds/linux/commit/49d31c2f389acfe83417083e1208422b4091cd9e
- https://patchwork.kernel.org/patch/9755753/
- https://patchwork.kernel.org/patch/9755757/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e
- http://openwall.com/lists/oss-security/2017/08/03/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1468283
- https://github.com/torvalds/linux/commit/49d31c2f389acfe83417083e1208422b4091cd9e
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e
- http://openwall.com/lists/oss-security/2017/08/03/2
- http://www.debian.org/security/2017/dsa-3927
- http://www.debian.org/security/2017/dsa-3945
- http://www.openwall.com/lists/oss-security/2019/06/27/7
- http://www.openwall.com/lists/oss-security/2019/06/28/1
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- http://www.securityfocus.com/bid/100123
- http://www.securitytracker.com/id/1039075
- https://access.redhat.com/errata/RHSA-2017:2473
- https://access.redhat.com/errata/RHSA-2017:2585
- https://access.redhat.com/errata/RHSA-2017:2669
- https://access.redhat.com/errata/RHSA-2017:2770
- https://access.redhat.com/errata/RHSA-2017:2869
- https://bugzilla.redhat.com/show_bug.cgi?id=1468283
- https://github.com/torvalds/linux/commit/49d31c2f389acfe83417083e1208422b4091cd9e
- https://patchwork.kernel.org/patch/9755753/
- https://patchwork.kernel.org/patch/9755757/
- https://source.android.com/security/bulletin/2017-12-01
- https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1408967.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e
- http://openwall.com/lists/oss-security/2017/08/03/2
- http://www.debian.org/security/2017/dsa-3927
- http://www.debian.org/security/2017/dsa-3945
- http://www.openwall.com/lists/oss-security/2019/06/27/7