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Vulnerability record · CVE-2018-16948 · published 12 September 2018

CVE-2018-16948: Openafs information exposure vulnerability

OOpenafs · Openafs

An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several RPC server routines did not fully initialize their output variables before returning, leaking memory contents from both the stack and the heap. Because the OpenAFS cache manager functions as an Rx server for the AFSCB service, clients are also susceptible to information leakage. For example, RXAFSCB_TellMeAboutYourself leaks kernel memory and KAM_ListEntry leaks kaserver memory.

7.5 CVSS 3.0 High EPSS 2.0% · top 20.2% CWE-200 · Information exposure
7.5CVSS 3.0 base score, v2 5.0
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several RPC server routines did not fully initialize their output variables before returning, leaking memory contents from both the stack and the heap. Because the OpenAFS cache manager functions as an Rx server for the AFSCB service, clients are also susceptible to information leakage. For example, RXAFSCB_TellMeAboutYourself leaks kernel memory and KAM_ListEntry leaks kaserver memory.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://openafs.org/pages/security/OPENAFS-SA-2018-002.txt Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html Third Party Advisory
https://www.debian.org/security/2018/dsa-4302 Third Party Advisory
http://openafs.org/pages/security/OPENAFS-SA-2018-002.txt Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00024.html Third Party Advisory
https://www.debian.org/security/2018/dsa-4302 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-16948), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.