Answer in brief
CVE-2025-38282 records a Medium severity (CVSS 5.5) vulnerability in kernfs: Relax constraint in draining guard. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <2d6a67c2b3b87808a347dc1047b520a9dd177a4f || >=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <6c81f1c7812c61f187bed1b938f1d2e391d503ab || >=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <6bfb154f95d5f0ab7ed056f23aba8c1a94cb3927 || >=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <72275c888f8962b406ee9c6885c79bf68cca5a63 || >=bdb2fd7fc56e197a63c0b0e7e07d25d5e20e7c72 <071d8e4c2a3b0999a9b822e2eb8854784a350f8a | 2d6a67c2b3b87808a347dc1047b520a9dd177a4f, 6c81f1c7812c61f187bed1b938f1d2e391d503ab, 6bfb154f95d5f0ab7ed056f23aba8c1a94cb3927, 72275c888f8962b406ee9c6885c79bf68cca5a63, 071d8e4c2a3b0999a9b822e2eb8854784a350f8a |
| Linux/Linuxgeneric | 6.1 | Not reported |
Published upstream
Jul 10, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: kernfs: Relax constraint in draining guard The active reference lifecycle provides the break/unbreak mechanism but the active reference is not truly active after unbreak -- callers don't use it afterwards but it's important for proper pairing of kn->active counting. Assuming this mechanism is in place, the WARN check in kernfs_should_drain_open_files() is too sensitive -- it may transiently catch those (rightful) callers between kernfs_unbreak_active_protection() and kernfs_put_active() as found out by Chen Ridong: kernfs_remove_by_name_ns kernfs_get_active // active=1 __kernfs_remove // active=0x80000002 kernfs_drain ... wait_event //waiting (active == 0x80000001) kernfs_break_active_protection // active = 0x80000001 // continue kernfs_unbreak_active_protection // active = 0x80000002 ... kernfs_should_drain_open_files // warning occurs kernfs_put_active To avoid the false positives (mind panic_on_warn) remove the check altogether. (This is meant as quick fix, I think active reference break/unbreak may be simplified with larger rework.)
Quoted source text, attributed separately from HOL analysis.