tracing: Add NULL pointer check to trigger_data_free()
Summary
| CVE | CVE-2026-23309 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-25 11:16:26 UTC |
| Updated | 2026-05-28 14:24:05 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: tracing: Add NULL pointer check to trigger_data_free() If trigger_data_alloc() fails and returns NULL, event_hist_trigger_parse() jumps to the out_free error path. While kfree() safely handles a NULL pointer, trigger_data_free() does not. This causes a NULL pointer dereference in trigger_data_free() when evaluating data->cmd_ops->set_filter. Fix the problem by adding a NULL pointer check to trigger_data_free(). The problem was found by an experimental code review agent based on gemini-3.1-pro while reviewing backports into v6.18.y. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-476
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected c10f0efe57728508d796ae4ba7abe4c14ec3d8ef 13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e git | Not specified |
| CNA | Linux | Linux | affected 7e6556e9329bc484e9dcdab6e346d959267c0636 59c15b9cc453b74beb9f04c6c398717e73612dc3 git | Not specified |
| CNA | Linux | Linux | affected 9b0513905e0598b9f8cfccab8e47497aed5d935d 42b380f97d65e76e7b310facd525f730272daf57 git | Not specified |
| CNA | Linux | Linux | affected 335dfe4bc6368e70e8c15419375cf609c4f85558 2ce8ece5a78da67834db7728edc801889a64f643 git | Not specified |
| CNA | Linux | Linux | affected e42efbe9754da78eafe11f6bd3ca9c8a094a752a 477469223b2b840f436ce204333de87cb17e5d93 git | Not specified |
| CNA | Linux | Linux | affected 0550069cc25f513ce1f109c88f7c1f01d63297db 457965c13f0837a289c9164b842d0860133f6274 git | Not specified |
| CNA | Linux | Linux | affected 6.1.165 6.1.167 semver | Not specified |
| CNA | Linux | Linux | affected 6.6.128 6.6.130 semver | Not specified |
| CNA | Linux | Linux | affected 6.12.75 6.12.77 semver | Not specified |
| CNA | Linux | Linux | affected 6.18.14 6.18.17 semver | Not specified |
| CNA | Linux | Linux | affected 6.19.4 6.19.7 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.