tracing: Take trace_array reference when opening a tracer options file
In the Linux kernel, the following vulnerability has been resolved: tracing: Take trace_array reference when opening a tracer options file When a tracer option file is opened, it is passed a descriptor that points to an element on the trace_array's topts array. This element has information to find the trace array and other information. It uses this element to take a reference of the trace_array so that the trace_array does not get removed while this file is opened. Unfortunately, there's a race condition where the element itself could be freed by the removal of the instance the trace_array represents causing a use-after-free as this element that is used to find the trace_array to increment its reference counter is also freed when the instance is removed. To solve this, add a trace_array_tracer_options_get() helper function that will take the address of the element that is passed to the open function by the inode->i_private pointer and search all the trace_arrays under a lock to find the one that the element's address is in the range of the trace_arrays topts array elements. When a match happens, that trace_array's reference would be increased. Note, there's a race where if an admin was deleting and creating trace instances at the same time and the memory of the old trace_array's array matched the memory of the new trace_array that it could in theory open the option from the wrong trace array. But we do not care because it would be stupid to perform that kind of action. As lon
CVE-2026-97933
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-2026-97933
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": "7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838",
"lessThan": "61894ea0d2a1ae8ce903abf73bd56958c035f182",
"versionType": "git"
},
{
"status": "affected",
"version": "7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838",
"lessThan": "b2890064a12efbeb3b3c093e69e9010dd244c881",
"versionType": "git"
},
{
"status": "affected",
"version": "7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838",
"lessThan": "d9232a90c6f7de822177d35d73d9234cba523ef9",
"versionType": "git"
},
{
"status": "affected",
"version": "7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838",
"lessThan": "b2fb87d29ffb3a7a9ccc5acf12898ecb80587427",
"versionType": "git"
},
{
"status": "affected",
"version": "7e2cfbd2d3c86afcd5c26b5c4b1dd251f63c5838",
"lessThan": "ed0aff60f83a9bdc2f6556376ac79c96b3ce7e80",
"versionType": "git"
},
{
"status": "affected",
"version": "952e477f908048145a5eb2ed3d431d9efc1e1073",
"versionType": "git"
},
{
"status": "affected",
"version": "b3183f5f05cd867f5c17122773ca5aa8d07b51af",
"versionType": "git"
},
{
"status": "affected",
"version": "bf38c1d29f8bfe9631b62a67f8dd1b8f7efb7139",
"versionType": "git"
},
{
"status": "affected",
"version": "2617afde0c3db285778734b0ccad9a55b4f9cda2",
"versionType": "git"
},
{
"status": "affected",
"version": "586787a0331aa2d7d244e9c4400d2a73295b0cf0",
"versionType": "git"
},
{
"status": "affected",
"version": "5.4.257",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.10.197",
"lessThan": "5.11",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.133",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.55",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.5.5",
"lessThan": "6.6",
"versionType": "semver"
}
],
"programFiles": [
"kernel/trace/trace.c",
"kernel/trace/trace.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/trace/trace.c",
"kernel/trace/trace.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97933
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48808 · Revision 1
- Added to Heist Feed
- Publisher date