CVE-2021-47445: drm/msm: Fix null pointer dereference on pointer edp
Vulnerability summary
CVE-2021-47445 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.3% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 11Timeline
- 22-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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")
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.23% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu87 products
- linuxAll versions (No fix recorded) | < 4.15.0-166.174 | < 5.4.0-92.103
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1118.125 | < 5.4.0-1061.64
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < f175b9a83e5c252d7c74acddc792840016caae0a | ≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < bacac7d26849c8e903ceb7466d9ce8dc3c2797eb | ≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < 0cd063aa0a09822cc1620fc59a67fe2f9f6338ac | ≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < 7f642b93710b6b1119bdff90be01e6b5a2a5d669 | ≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < f302be08e3de94db8863a0b2958b2bb3e8e998e6 | ≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < 91a340768b012f5b910a203a805b97a345b3db37 | ≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < 46c8ddede0273d1d132beefa9de8b820326982be | ≥ ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < 2133c4fc8e1348dcb752f267a143fe2254613b34 | 4.0
- linux_kernel≥ 4.0, < 4.4.290 | ≥ 4.5, < 4.9.288 | ≥ 4.10, < 4.14.252 | ≥ 4.15, < 4.19.213 | ≥ 4.20, < 5.4.155 | ≥ 5.5, < 5.10.75 | ≥ 5.11, < 5.14.14 | 5.15:rc1 | 5.15:rc2 | 5.15:rc3 | 5.15:rc4 | 5.15:rc5
Debian1 product
- linux< 5.14.16-1
3 vendors · 90 products
