CVE-2025-38610: debian debian_linux NULL Pointer Dereference
Vulnerability summary
CVE-2025-38610 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 5.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 41 · Related 38Timeline
- 19-08-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: powercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw() The get_pd_power_uw() function can crash with a NULL pointer dereference when em_cpu_get() returns NULL. This occurs when a CPU becomes impossible during runtime, causing get_cpu_device() to return NULL, which propagates through em_cpu_get() and leads to a crash when em_span_cpus() dereferences the NULL pointer. Add a NULL check after em_cpu_get() and return 0 if unavailable, matching the existing fallback behavior in __dtpm_cpu_setup(). [ rjw: Drop an excess empty code line ]
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 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu121 products
- linux< 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 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≥ eb82bace893169b319c563b7f813c58a0a5a9f76, < 27914f2b795e2b58e9506f281dcdd98fef09d3c2 | ≥ eb82bace893169b319c563b7f813c58a0a5a9f76, < c6ec27091cf5ac05094c1fe3a6ce914cf711a37c | ≥ eb82bace893169b319c563b7f813c58a0a5a9f76, < 8374ac7d69a57d737e701a851ffe980a0d27d3ad | ≥ eb82bace893169b319c563b7f813c58a0a5a9f76, < 27e0318f0ea69fcfa32228847debc384ade14578 | ≥ eb82bace893169b319c563b7f813c58a0a5a9f76, < 2fd001a0075ac01dc64a28a8e21226b3d989a91d | ≥ eb82bace893169b319c563b7f813c58a0a5a9f76, < 46dc57406887dd02565cb264224194a6776d882b | 5.16
- linux_kernel≥ 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 · 125 products
References
34 links- lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory