CVE-2021-47445

drm/msm: Fix null pointer dereference on pointer edp

MEDIUM
5.5
CVSS Score
Published: May 22, 2024 at 06:19 AM UTC
Updated: June 17, 2026 at 04:17 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: drm/msm: Fix null pointer dereference on pointer edp The initialization of pointer dev dereferences pointer edp before edp is null checked, so there is a potential null pointer deference issue. Fix this by only dereferencing edp after edp has been null checked. Addresses-Coverity: ("Dereference before null check")

Affected

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

4.0 ≤ v < 4.14.2524.0 ≤ v < 4.19.2134.0 ≤ v < 4.4.2904.0 ≤ v < 4.9.2884.0 ≤ v < 5.10.754.0 ≤ v < 5.14.144.0 ≤ v < 5.154.0 ≤ v < 5.4.1554.10 ≤ v < 4.14.2524.15 ≤ v < 4.19.2134.20 ≤ v < 5.4.1554.5 ≤ v < 4.9.2885.11 ≤ v < 5.14.145.5 ≤ v < 5.10.755.15 rc15.15 rc25.15 rc35.15 rc45.15 rc5ab5b0107ccf3821a6837b0f2819270d6fa0b278f
Vendor states this is fixed in 0cd063aa0a09822cc1620fc59a67fe2f9f6338ac (fixed)
Vendor states this is fixed in 2133c4fc8e1348dcb752f267a143fe2254613b34 (fixed)
Vendor states this is fixed in 46c8ddede0273d1d132beefa9de8b820326982be (fixed)
Vendor states this is fixed in 7f642b93710b6b1119bdff90be01e6b5a2a5d669 (fixed)
Vendor states this is fixed in 91a340768b012f5b910a203a805b97a345b3db37 (fixed)
Vendor states this is fixed in bacac7d26849c8e903ceb7466d9ce8dc3c2797eb (fixed)
Vendor states this is fixed in f175b9a83e5c252d7c74acddc792840016caae0a (fixed)
Vendor states this is fixed in f302be08e3de94db8863a0b2958b2bb3e8e998e6 (fixed)
Vendor states this is fixed in 4.0 (unaffected)
Vendor states this is fixed in 4.14.252 (unaffected)
Vendor states this is fixed in 4.19.213 (unaffected)
Vendor states this is fixed in 4.4.290 (unaffected)
Vendor states this is fixed in 4.9.288 (unaffected)
Vendor states this is fixed in 5.10.75 (unaffected)
Vendor states this is fixed in 5.14.14 (unaffected)
Vendor states this is fixed in 5.15 (unaffected)
Vendor states this is fixed in 5.4.155 (unaffected)

References (8)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0cd063aa0a09822cc1620fc59a67fe2f9f6338ac
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2133c4fc8e1348dcb752f267a143fe2254613b34
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/46c8ddede0273d1d132beefa9de8b820326982be
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7f642b93710b6b1119bdff90be01e6b5a2a5d669
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/91a340768b012f5b910a203a805b97a345b3db37
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bacac7d26849c8e903ceb7466d9ce8dc3c2797eb
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f175b9a83e5c252d7c74acddc792840016caae0a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f302be08e3de94db8863a0b2958b2bb3e8e998e6

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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