CVE-2020-29372

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Summary

CVECVE-2020-29372
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-11-28 07:15:11 UTC
Updated2026-05-29 16:16:21 UTC
DescriptionAn issue was discovered in do_madvise in mm/madvise.c in the Linux kernel before 5.6.8. There is a race condition between coredump operations and the IORING_OP_MADVISE implementation, aka CID-bc0c4d1e176e.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from [email protected]

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

EPSS: 0.000530000 probability, percentile 0.170050000 (date 2026-06-02)

Problem Types: CWE-362 | n/a | CWE-362 CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED4.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary4.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary4.7AV:L/AC:M/Au:N/C:N/I:N/A:C

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:L/AC:M/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 20.04 All All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Kernel Live Patch Security Notice LSN-0075-1 ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Third Party Advisory, VDB Entry
2029 - project-zero - Project Zero - Monorail af854a3a-2127-422b-91ae-364da2661108 bugs.chromium.org Exploit, Issue Tracking, Third Party Advisory
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.8 af854a3a-2127-422b-91ae-364da2661108 cdn.kernel.org Release Notes, Vendor Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch, Vendor Advisory
project-zero.issues.chromium.org/issues/42451131 134c704f-9b21-4f2e-91b3-4a467353bcc0 project-zero.issues.chromium.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 900040 CBL-Mariner Linux Security Update for kernel 5.4.91
  • 903548 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3624)
  • 906210 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3624-1)
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