CVE-2020-25704
First published: Mon Nov 09 2020(Updated: )
A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1160.53.1.rt56.1193.el7 | 0:3.10.0-1160.53.1.rt56.1193.el7 |
| redhat/kernel | <0:3.10.0-1160.53.1.el7 | 0:3.10.0-1160.53.1.el7 |
| redhat/kernel-rt | <0:4.18.0-305.rt7.72.el8 | 0:4.18.0-305.rt7.72.el8 |
| redhat/kernel | <0:4.18.0-305.el8 | 0:4.18.0-305.el8 |
| redhat/kernel-rt | <0:4.18.0-193.60.2.rt13.112.el8_2 | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel | <0:4.18.0-193.60.2.el8_2 | 0:4.18.0-193.60.2.el8_2 |
| redhat/kernel | <5.10 | 5.10 |
| Linux Kernel | <=5.9 | |
| Linux Kernel | =5.10-rc1 | |
| Linux Kernel | =5.10-rc2 | |
| Debian GNU/Linux | =9.0 | |
| StarWind Command Center | ||
| starwindsoftware starwind hyperconverged appliance | ||
| starwindsoftware starwind san \& nas | =v8r12 | |
| StarWind Virtual SAN | =v8-build14398 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
Remedy
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2020-25704 https://nvd.nist.gov/vuln/detail/CVE-2020-25704 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00 https://www.openwall.com/lists/oss-security/2020/11/09/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1895961
- https://access.redhat.com/errata/RHSA-2022:0065
- https://access.redhat.com/errata/RHSA-2022:0063
- https://access.redhat.com/errata/RHSA-2021:1739
- https://access.redhat.com/errata/RHSA-2021:1578
- https://access.redhat.com/errata/RHSA-2021:2719
- https://access.redhat.com/errata/RHSA-2021:2718
- https://access.redhat.com/security/cve/cve-2020-25704
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- https://www.openwall.com/lists/oss-security/2020/11/09/1
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
- https://www.starwindsoftware.com/security/sw-20220802-0003/
- https://launchpad.net/bugs/cve/CVE-2020-25704
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1895963
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- https://git.kernel.org/linus/7bdb157cdebbf95a1cd94ed2e01b338714075d00
- https://security-tracker.debian.org/tracker/CVE-2020-25704
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25704
- https://nvd.nist.gov/vuln/detail/CVE-2020-25704
- https://ubuntu.com/security/CVE-2020-25704
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2020-25704?
CVE-2020-25704 has a CVSS score that indicates it is a medium severity vulnerability due to the potential for local denial of service.
How do I fix CVE-2020-25704?
To fix CVE-2020-25704, update to the appropriate patched versions of the Linux kernel as specified in the affected software documentation.
What systems are affected by CVE-2020-25704?
CVE-2020-25704 affects versions of the Linux kernel prior to the patched versions provided by Red Hat and Debian.
What are the implications of CVE-2020-25704?
Exploitation of CVE-2020-25704 could lead to resource starvation and cause a denial of service condition for local users on the affected systems.
Is there a workaround for CVE-2020-25704?
There are no specific workarounds for CVE-2020-25704, so applying the recommended security updates is essential.
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