CVE-2025-38445: Linux kernel · md/raid1: Fix stack memory use after return in raid1_reshape
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in df5894014a92ff0196dbc212a7764e97366fd2b7 : patch Linux kernel soon.
Data as of 5 Nov 2026, 21:20 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in df5894014a92ff0196dbc212a7764e97366fd2b7, d67ed2ccd2d1dcfda9292c0ea8697a9d0f2f0d98, d8a6853d00fbaa810765c8ed2f452a5832273968 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available in the Linux kernel as indicated by multiple fixed commit versions. Users should update to a Linux kernel version that includes the fix referenced by the commit hashes provided. No additional mitigation steps are indicated.
Description
A vulnerability in the Linux kernel's md/raid1 subsystem involves improper use of stack memory in the raid1_reshape function. The function assigns a stack-allocated mempool_t variable to conf->r1bio_pool, causing conf->r1bio_pool.wait.head to point to a stack address. Subsequent access to this invalid address can lead to a kernel panic. The issue is fixed by reinitializing conf->r1bio_pool.wait after assigning newpool.
References
- git.kernel.org/stable/c/d8a6853d00fbaa810765c8ed2f452a5832273968 (opens in a new tab)
- git.kernel.org/stable/c/12b00ec99624f8da8c325f2dd6e807df26df0025 (opens in a new tab)
- git.kernel.org/stable/c/48da050b4f54ed639b66278d0ae6f4107b2c4e2d (opens in a new tab)
- git.kernel.org/stable/c/5f35e48b76655e45522df338876dfef88dafcc71 (opens in a new tab)
- git.kernel.org/stable/c/df5894014a92ff0196dbc212a7764e97366fd2b7 (opens in a new tab)
- git.kernel.org/stable/c/776e6186dc9ecbdb8a1b706e989166c8a99bbf64 (opens in a new tab)
- git.kernel.org/stable/c/61fd5e93006cf82ec8ee5c115ab5cf4bbd104bdb (opens in a new tab)
- git.kernel.org/stable/c/d67ed2ccd2d1dcfda9292c0ea8697a9d0f2f0d98 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)