CVE-2025-38583: debian debian_linux NULL Pointer Dereference
Vulnerability summary
CVE-2025-38583 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 50 · Related 47Timeline
- 19-08-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: clk: xilinx: vcu: unregister pll_post only if registered correctly If registration of pll_post is failed, it will be set to NULL or ERR, unregistering same will fail with following call trace: Unable to handle kernel NULL pointer dereference at virtual address 008 pc : clk_hw_unregister+0xc/0x20 lr : clk_hw_unregister_fixed_factor+0x18/0x30 sp : ffff800011923850 ... Call trace: clk_hw_unregister+0xc/0x20 clk_hw_unregister_fixed_factor+0x18/0x30 xvcu_unregister_clock_provider+0xcc/0xf4 [xlnx_vcu] xvcu_probe+0x2bc/0x53c [xlnx_vcu]
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
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
+0.01 pp
From 0.16% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu135 products
- linux< 5.15.0-163.173 | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1097.104 | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.148-1 | < 6.12.43-1 | < 6.16.3-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 4472e1849db7f719bbf625890096e0269b5849fe, < 7e903da71f8bec4beb7c06707900e1ed8db843ca | ≥ 4472e1849db7f719bbf625890096e0269b5849fe, < 88bd875b7f9c3652c27d6e4bb7a23701b764f762 | ≥ 4472e1849db7f719bbf625890096e0269b5849fe, < 51990eecf22f446550befdfd1a9f54147eafd636 | ≥ 4472e1849db7f719bbf625890096e0269b5849fe, < f1a1be99d5ae53d3b404415f1665eb59e8e02a8c | ≥ 4472e1849db7f719bbf625890096e0269b5849fe, < 86124c5cfceb5ac04d2fddbf1b6f7147332d96a3 | ≥ 4472e1849db7f719bbf625890096e0269b5849fe, < a72b1c2d3b53e088bfaeb593949ff6fbd2cbe8ed | ≥ 4472e1849db7f719bbf625890096e0269b5849fe, < 3b0abc443ac22f7d4f61ddbbbbc5dbb06c87139d | 5.12
- linux_kernel≥ 5.12, < 5.15.190 | ≥ 5.16, < 6.1.148 | ≥ 6.2, < 6.6.102 | ≥ 6.7, < 6.12.42 | ≥ 6.13, < 6.15.10 | ≥ 6.16, < 6.16.1
3 vendors · 139 products