CVE-2018-5333
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.
Does this matter?
A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 7.2%. Treat it as high on anything reachable from the internet.
Description
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.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.21% probability · 94th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 23 January 2020
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel · debian/debian linux · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS moved from 17.6% on 21 September 2026 to 7.2% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d11f77f84b27cef452cee332f4e469503084737Issue Tracking, Patch, Vendor Advisory
- http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
- http://www.securityfocus.com/bid/102510Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0470Third Party Advisory
- https://github.com/torvalds/linux/commit/7d11f77f84b27cef452cee332f4e469503084737Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3583-1/Third Party Advisory
- https://usn.ubuntu.com/3583-2/Third Party Advisory
- https://usn.ubuntu.com/3617-1/Third Party Advisory
- https://usn.ubuntu.com/3617-2/Third Party Advisory
- https://usn.ubuntu.com/3617-3/Third Party Advisory
- https://usn.ubuntu.com/3619-1/Third Party Advisory
- https://usn.ubuntu.com/3619-2/Third Party Advisory
- https://usn.ubuntu.com/3632-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4187Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d11f77f84b27cef452cee332f4e469503084737Issue Tracking, Patch, Vendor Advisory
- http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
- http://www.securityfocus.com/bid/102510Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0470Third Party Advisory
- https://github.com/torvalds/linux/commit/7d11f77f84b27cef452cee332f4e469503084737Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3583-1/Third Party Advisory
- https://usn.ubuntu.com/3583-2/Third Party Advisory
- https://usn.ubuntu.com/3617-1/Third Party Advisory
- https://usn.ubuntu.com/3617-2/Third Party Advisory
- https://usn.ubuntu.com/3617-3/Third Party Advisory
- https://usn.ubuntu.com/3619-1/Third Party Advisory
- https://usn.ubuntu.com/3619-2/Third Party Advisory
- https://usn.ubuntu.com/3632-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4187Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.