perf/core: Allow list_del during perf_event_overflow()
In the Linux kernel, the following vulnerability has been resolved: perf/core: Allow list_del during perf_event_overflow() A PMU might use perf_sched_cb_inc() and perf_sched_cb_dec() interface to get the PMU call back function pmu::sched_task invoked at schedule in and schedule out. This is achieved by walking along the list anchored by sched_cb_list. The following scenario might lead to a list corruption. perf_pmu_sched_task() for_each_list_entry(..., &sched_cb_list) +--> __perf_pmu_sched_task() +--> event->pmu->sched_task()) +--> PMU_push_sample() +--> perf_event_overflow() +--> __perf_event_overflow() +--> pmu->stop() +--> perf_sched_cb_dec() remove entry from sched_cb_list while list node in use. This happens when ioctl(fd, PERF_EVENT_IOC_REFRESH, xxx) has been invoked and perf_event::event_limit hits zero. Prevent the list corruption and convert for_each_list_entry() to for_each_list_entry_safe().
CVE-2026-97961
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-2026-97961
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": "bd27568117664b8b3e259721393df420ed51f57b",
"lessThan": "fa360a018369f3eb4fe4f4792238adfc1f6fd5dc",
"versionType": "git"
},
{
"status": "affected",
"version": "bd27568117664b8b3e259721393df420ed51f57b",
"lessThan": "723e85fb2c3bcd237ac02cbd69502ed62ce0068c",
"versionType": "git"
},
{
"status": "affected",
"version": "bd27568117664b8b3e259721393df420ed51f57b",
"lessThan": "6d0b9ce3be221c9077653f3670d60d66bb725ee2",
"versionType": "git"
},
{
"status": "affected",
"version": "bd27568117664b8b3e259721393df420ed51f57b",
"lessThan": "e2770c76a02452fddb52e9e05c7ed6acfef06c32",
"versionType": "git"
},
{
"status": "affected",
"version": "bd27568117664b8b3e259721393df420ed51f57b",
"lessThan": "59e63416f5153e7d58652c616fbdcb7d5e01fff7",
"versionType": "git"
}
],
"programFiles": [
"kernel/events/core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"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/events/core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97961
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48817 · Revision 1
- Added to Heist Feed
- Publisher date