CVE-2023-52902

nommu: fix memory leak in do_mmap() error path

MEDIUM
5.5
CVSS Score
Published: August 21, 2024 at 06:10 AM UTC
Updated: June 17, 2026 at 06:43 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: nommu: fix memory leak in do_mmap() error path The preallocation of the maple tree nodes may leak if the error path to "error_just_free" is taken. Fix this by moving the freeing of the maple tree nodes to a shared location for all error paths.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.1 ≤ v < 6.1.86.1 ≤ v < 6.26.2 rc16.2 rc26.2 rc36.2 rc48220543df1489ef96c3d4e8b0b3b03c340e3943e
Vendor states this is fixed in 1442d51026c58e7c11dd5f9b19650632a48676d4 (fixed)
Vendor states this is fixed in 7f31cced5724e6d414fe750aa1cd7e7b578ec22f (fixed)
Vendor states this is fixed in 6.1 (unaffected)
Vendor states this is fixed in 6.1.8 (unaffected)
Vendor states this is fixed in 6.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1442d51026c58e7c11dd5f9b19650632a48676d4
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7f31cced5724e6d414fe750aa1cd7e7b578ec22f

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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