CVE-2020-11565
Published Apr 6, 2020 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- Patch commit ↗
- Patch commit ↗
- DSA-4667 ↗
- USN-4364-1 ↗
- USN-4367-1 ↗
- USN-4368-1 ↗
- USN-4363-1 ↗
- USN-4369-1 ↗
- [debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update ↗
- [debian-lts-announce] 20200610 [SECURITY] [DLA 2242-1] linux-4.9 security update ↗
- [debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update ↗
- DSA-4698 ↗
Record history
Published Apr 6, 2020 · Last refreshed Oct 23, 2026