CVE-2018-5333: Null Pointer Dereference
First published: Thu Jan 11 2018(Updated: )
In the Linux kernel through 4.14.13, the rds_cmsg_atomic function in net/rds/rdma.c mishandles cases where page pinning fails or an invalid address is supplied, leading to an rds_atomic_free_op NULL pointer dereference.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 | |
| Linux Kernel | <=4.14.13 | |
| Debian GNU/Linux | =7.0 | |
| Debian GNU/Linux | =8.0 | |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =17.10 |
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Reference Links
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d11f77f84b27cef452cee332f4e469503084737
- http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
- http://www.securityfocus.com/bid/102510
- https://access.redhat.com/errata/RHSA-2018:0470
- https://github.com/torvalds/linux/commit/7d11f77f84b27cef452cee332f4e469503084737
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- https://usn.ubuntu.com/3617-1/
- https://usn.ubuntu.com/3617-2/
- https://usn.ubuntu.com/3617-3/
- https://usn.ubuntu.com/3619-1/
- https://usn.ubuntu.com/3619-2/
- https://usn.ubuntu.com/3632-1/
- https://www.debian.org/security/2018/dsa-4187
- https://launchpad.net/bugs/cve/CVE-2018-5333
- https://marc.info/?t=151501368300001&r=1&w=4
- https://patchwork.ozlabs.org/patch/855213/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7d11f77f84b27cef452cee332f4e469503084737
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1533895
- https://access.redhat.com/support/policy/updates/errata/
- https://access.redhat.com/articles/3158541
- https://access.redhat.com/articles/3158511
- https://bugzilla.redhat.com/show_bug.cgi?id=1533891
- https://git.kernel.org/linus/7d11f77f84b27cef452cee332f4e469503084737
- https://security-tracker.debian.org/tracker/CVE-2018-5333
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5333
- https://nvd.nist.gov/vuln/detail/CVE-2018-5333
- https://ubuntu.com/security/CVE-2018-5333
Frequently Asked Questions
What is the severity of CVE-2018-5333?
CVE-2018-5333 has been categorized with a high severity due to the potential for privilege escalation.
How do I fix CVE-2018-5333?
To resolve CVE-2018-5333, upgrade the Linux kernel to a version higher than 4.14.13.
What systems are affected by CVE-2018-5333?
CVE-2018-5333 affects Linux kernel versions up to 4.14.13 as well as specific Debian and Ubuntu releases.
What does CVE-2018-5333 exploit?
CVE-2018-5333 exploits a NULL pointer dereference in the rds_cmsg_atomic function related to page pinning failures.
Is there a workaround for CVE-2018-5333?
There is no direct workaround for CVE-2018-5333; upgrading the kernel is recommended to mitigate the vulnerability.
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