Vulnerability Report

CVE-2020-29372

Title: Linux Kernel Race Condition in madvise

Arbitrary File Access

Proof Of Concept

No public PoC currently indexed for CVE-2020-29372.

CWE Category CWE-362
Published Date Nov 28, 2020
Modified Date May 29, 2026
Exploit Status Not Found
Score 4.7 CVSS v3.1
Exploit Probability (EPSS)
0.39%

Vulnerability Summary

CVE-2020-29372: An 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.

Impacted Vendors

L
linux 1
U
ubuntu 2
C
canonical 1

Reference Links

http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html https://bugs.chromium.org/p/project-zero/issues/detail?id=2029 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.8 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0c4d1e176eeb614dc8734fc3ace34292771f11 http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html https://bugs.chromium.org/p/project-zero/issues/detail?id=2029 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.8 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0c4d1e176eeb614dc8734fc3ace34292771f11
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.7
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity MEDIUM
4.7
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.7
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:M/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-29372 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.