CVE-2021-47050

memory: renesas-rpc-if: fix possible NULL pointer dereference of resource

MEDIUM
5.5
CVSS Score
Published: February 28, 2024 at 08:13 AM UTC
Updated: June 17, 2026 at 04:16 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: memory: renesas-rpc-if: fix possible NULL pointer dereference of resource The platform_get_resource_byname() can return NULL which would be immediately dereferenced by resource_size(). Instead dereference it after validating the resource. Addresses-Coverity: Dereference null return value

Affected

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

5.11 ≤ v < 5.11.215.12 ≤ v < 5.12.45.9 ≤ v < 5.10.375.9 ≤ v < 5.11.215.9 ≤ v < 5.12.45.9 ≤ v < 5.135.9ca7d8b980b67f133317525c4273e144116ee1ae5
Vendor states this is fixed in 59e27d7c94aa02da039b000d33c304c179395801 (fixed)
Vendor states this is fixed in 71bcc1b4a1743534d8abdcb57ff912e6bc390438 (fixed)
Vendor states this is fixed in a74cb41af7dbe019e4096171f8bc641c7ce910ad (fixed)
Vendor states this is fixed in e16acc3a37f09e18835dc5d8014942c2ef6ca957 (fixed)
Vendor states this is fixed in 5.10.37 (unaffected)
Vendor states this is fixed in 5.11.21 (unaffected)
Vendor states this is fixed in 5.12.4 (unaffected)
Vendor states this is fixed in 5.13 (unaffected)
Vendor states this is fixed in 5.9 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910ad
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957

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-476

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