Buffer overflow in Linux Kernel
CVE-2018-5332
In the Linux kernel through 3.2, the rds_message_alloc_sgs() function does not validate a value that is used during DMA page allocation, leading to a heap-based out-of-bounds write (related to the rds_rdma_extra_size function in net/rds/rdma.c).
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (36.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 7.0, 8.0
Weakness classification (CWE)
References
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- www.debian.org/security/2018/dsa-4187 (vendor-advisory, Third Party Advisory)
- github.com/torvalds/linux/commit/c095508770aebf1b9218e77026e48345d719b17c (Patch, Vendor Advisory)
- usn.ubuntu.com/3617-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3619-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3617-3/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3632-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3620-2/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/102507 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- access.redhat.com/errata/RHSA-2018:0470 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-5332?
- CVE-2018-5332 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2018-01-11.
- How severe is CVE-2018-5332?
- High severity. CVSS v3 base score is 7.8 out of 10.