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CVE-2018-5332

HIGHCVSS 7.8/10EPSS 0.43%

Last modified

CVE-2018-5332 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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).. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.43%

34.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel< 3.2.99
LinuxLinux Kernel>= 3.3, < 3.16.54
LinuxLinux Kernel>= 3.17, < 3.18.92
LinuxLinux Kernel>= 3.19, < 4.1.50
LinuxLinux Kernel>= 4.2, < 4.4.112
LinuxLinux Kernel>= 4.5, < 4.9.77
LinuxLinux Kernel>= 4.10, < 4.14.44
DebianDebian Linux7.0
DebianDebian Linux8.0
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux17.10

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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).
How severe is CVE-2018-5332?
CVE-2018-5332 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2018-5332?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST