CVE-2024-49917: drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw
Vulnerability summary
CVE-2024-49917 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.9% 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 27 · Related 28Timeline
- 21-10-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw This commit addresses a potential null pointer dereference issue in the `dcn30_init_hw` function. The issue could occur when `dc->clk_mgr` or `dc->clk_mgr->funcs` is null. The fix adds a check to ensure `dc->clk_mgr` and `dc->clk_mgr->funcs` is not null before accessing its functions. This prevents a potential null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 628)
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
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% 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.
Ubuntu134 products
- linuxAll versions (No fix recorded) | < 6.8.0-54.56
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.8.0-1023.25
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 23cb6139543580dc36743586ca86fbb3f7ab2c9d | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 205e3b96cc9aa9211fd2c849a16245cf236b2d36 | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 5443c83eb8fd2f88c71ced38848fbf744d6206a2 | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 56c326577971adc3a230f29dfd3aa3abdd505f5d | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < cba7fec864172dadd953daefdd26e01742b71a6a | 4.15
- linux_kernel< 6.10.14 | ≥ 6.11, < 6.11.3
Debian1 product
- linux< 6.1.123-1 | < 6.11.4-1
3 vendors · 137 products
