tracing: Verify event formats that have "%*p.."
In the Linux kernel, the following vulnerability has been resolved: tracing: Verify event formats that have "%*p.." The trace event verifier checks the formats of trace events to make sure that they do not point at memory that is not in the trace event itself or in data that will never be freed. If an event references data that was allocated when the event triggered and that same data is freed before the event is read, then the kernel can crash by reading freed memory. The verifier runs at boot up (or module load) and scans the print formats of the events and checks their arguments to make sure that dereferenced pointers are safe. If the format uses "%*p.." the verifier will ignore it, and that could be dangerous. Cover this case as well. Also add to the sample code a use case of "%*pbl".
CVE-2025-37938
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-37938
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5013f454a352cce8e62162976026a9c472595e42",
"lessThan": "6854c87ac823181c810f8c07489ba543260c0023",
"versionType": "git"
},
{
"status": "affected",
"version": "5013f454a352cce8e62162976026a9c472595e42",
"lessThan": "4d11fac941d83509be4e6a21038281d6d96da50c",
"versionType": "git"
},
{
"status": "affected",
"version": "5013f454a352cce8e62162976026a9c472595e42",
"lessThan": "03127354027508d076073b020d3070990fd6a958",
"versionType": "git"
},
{
"status": "affected",
"version": "5013f454a352cce8e62162976026a9c472595e42",
"lessThan": "04b80d45ecfaf780981d6582899e3ab205e4aa08",
"versionType": "git"
},
{
"status": "affected",
"version": "5013f454a352cce8e62162976026a9c472595e42",
"lessThan": "c7204fd1758c0caf1938e8a59809a1fdf28a8114",
"versionType": "git"
},
{
"status": "affected",
"version": "5013f454a352cce8e62162976026a9c472595e42",
"lessThan": "ea8d7647f9ddf1f81e2027ed305299797299aa03",
"versionType": "git"
}
],
"programFiles": [
"kernel/trace/trace_events.c",
"samples/trace_events/trace-events-sample.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.136",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.89",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.26",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13.11",
"versionType": "semver",
"lessThanOrEqual": "6.13.*"
},
{
"status": "unaffected",
"version": "6.14.2",
"versionType": "semver",
"lessThanOrEqual": "6.14.*"
},
{
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/trace/trace_events.c",
"samples/trace_events/trace-events-sample.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-37938
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30495 · Revision 1
- Added to Heist Feed
- Publisher date