CVE-2025-38113: debian debian_linux NULL Pointer Dereference
Vulnerability summary
CVE-2025-38113 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 43 · Related 39Timeline
- 03-07-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Fix NULL pointer dereference when nosmp is used With nosmp in cmdline, other CPUs are not brought up, leaving their cpc_desc_ptr NULL. CPU0's iteration via for_each_possible_cpu() dereferences these NULL pointers, causing panic. Panic backtrace: [ 0.401123] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000b8 ... [ 0.403255] [<ffffffff809a5818>] cppc_allow_fast_switch+0x6a/0xd4 ... Kernel panic - not syncing: Attempted to kill init! [ rjw: New subject ]
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
0.19%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
+0.02 pp
From 0.17% 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
Ubuntu119 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< 6.1.147-1 | < 6.12.35-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 3cc30dd00a580ca0c9c0b01639841cfd72d10129, < 356d09c7f5bf525086002a34f8bae40b134d1611 | ≥ 3cc30dd00a580ca0c9c0b01639841cfd72d10129, < c6dad167aade4bf0bef9130f2f149f4249fc4ad0 | ≥ 3cc30dd00a580ca0c9c0b01639841cfd72d10129, < 32a48db4cf28ea087214c261da8476db218d08bd | ≥ 3cc30dd00a580ca0c9c0b01639841cfd72d10129, < 1a677d0ceb4a5d62117b711a8b2e0aee80d33015 | ≥ 3cc30dd00a580ca0c9c0b01639841cfd72d10129, < 15eece6c5b05e5f9db0711978c3e3b7f1a2cfe12 | 5.19
- linux_kernel≥ 5.19, < 6.1.142 | ≥ 6.2, < 6.6.94 | ≥ 6.7, < 6.12.34 | ≥ 6.13, < 6.15.3 | 6.16:rc1
3 vendors · 123 products
References
34 links- lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory