Out-of-bounds Read Affecting perf package, versions <0:4.18.0-372.121.1.el8_6
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Test your applications- Snyk ID SNYK-RHEL8-PERF-7891976
- published 4 Sep 2024
- disclosed 25 Mar 2024
Introduced: 25 Mar 2024
CVE-2021-47138 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-372.121.1.el8_6 or higher.
This issue was patched in RHSA-2024:6297.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
cxgb4: avoid accessing registers when clearing filters
Hardware register having the server TID base can contain invalid values when adapter is in bad state (for example, due to AER fatal error). Reading these invalid values in the register can lead to out-of-bound memory access. So, fix by using the saved server TID base when clearing filters.
References
- https://access.redhat.com/security/cve/CVE-2021-47138
- https://git.kernel.org/stable/c/02f03883fdb10ad7e66717c70ea163a8d27ae6e7
- https://git.kernel.org/stable/c/0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf
- https://git.kernel.org/stable/c/285207a558ab456aa7d8aa877ecc7e91fcc51710
- https://git.kernel.org/stable/c/88c380df84fbd03f9b137c2b9d0a44b9f2f553b0