CVE-2026-97919
- Source
- https://cve.org/CVERecord?id=CVE-2026-97919
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97919.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-97919
- Downstream
- Related
- Published
- 2026-09-25T10:22:39Z
- Modified
- 2026-10-09T17:27:02Z
- Summary
- tracing: Take the reference before publishing the named histogram trigger
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
tracing: Take the reference before publishing the named histogram trigger
event_hist_trigger_named_init() puts the trigger on the global named_triggers list and only then takes the reference on the trigger it shares its histogram with:
data->ref++; save_named_trigger(data->named_data->name, data); ret = event_hist_trigger_init(data->named_data); if (ret < 0) { kfree(data->cmd_ops); data->cmd_ops = &trigger_hist_cmd; } return ret;event_hist_trigger_init() fails when alloc_hist_pad() cannot allocate, and nothing takes the trigger back off the list on the way out. event_hist_trigger_parse() frees it, and the next lookup by name reads the freed object:
BUG: KASAN: slab-use-after-free in find_named_trigger+0xac/0xc0 Read of size 8 at addr ffff888009346860 by task init/1 find_named_trigger+0xac/0xc0 hist_register_trigger+0xc1/0xa00 event_hist_trigger_parse+0x3146/0x6af0 event_trigger_write+0xce/0x160 Freed by task 67: kfree+0x154/0x420 trigger_kthread_fn+0xfd/0x160
Do the reference first and publish once it has succeeded, so that nothing which can fail runs after the trigger becomes findable.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97919.json" }- References
-
- https://git.kernel.org/stable/c/0fe23b8eaba0d3372c66b7b31204408da0715edc
- https://git.kernel.org/stable/c/2ffaade3611bd9501bc0b9d5d19fc75bfee7a16b
- https://git.kernel.org/stable/c/91c15cdda6033e2439f5975b938754152f3d6e38
- https://git.kernel.org/stable/c/b6fb2f5370a9a6aec325ab2db1ca3d1a881499b8
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97919.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-97919
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducede53a8dcd36b9ebc9229450eb594ae20e0b2ae0fdFixedb6fb2f5370a9a6aec325ab2db1ca3d1a881499b8
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7ab0fc61ce73040f89b12d76a8279995ec283541Fixed2ffaade3611bd9501bc0b9d5d19fc75bfee7a16bFixed91c15cdda6033e2439f5975b938754152f3d6e38Fixed0fe23b8eaba0d3372c66b7b31204408da0715edc
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.34Fixed6.12.112
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.94Fixed6.7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.15.3Fixed6.16
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedac7ab38c271ba2edaeb0dc35b200ec13339776ae
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced740dab2338f70d93aa8235db5a9541d846d7b21c