Answer in brief
CVE-2026-74753 records a Unknown severity vulnerability in perf: Reject exited events as group leaders. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a2d5d3ee7b6e3953114726b1521e62123ab5b043 <7a03413f31c196ab3894f988cdce0bb47b4fec42 || >=06ccef0434e98058ddae7bcebc901f93d22b7653 <7ce010275c531475f9d6e7efb11b9e522c74ed2e || >=037a3c43edfb597665dd34457cd22b14692f2ba3 <fa091f46c3833fb22384f10eade2b4e1e1d0b278 || 4cdb1b3ab96eb1b7eb70bc5c82fede334bd60df2 || 39358e856fb89e62e3c8d7389a2dc4ec33dbe90e || >=6.6.145 <6.7 || >=6.12.96 <6.13 | 7a03413f31c196ab3894f988cdce0bb47b4fec42, 7ce010275c531475f9d6e7efb11b9e522c74ed2e, fa091f46c3833fb22384f10eade2b4e1e1d0b278, 6.7, 6.13 |
| Linux/Linuxgeneric | >=6.18.39 <6.18.46 || >=7.1.4 <7.1.10 | 6.18.46, 7.1.10 |
Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 26, 2026
In the Linux kernel, the following vulnerability has been resolved: perf: Reject exited events as group leaders perf_event_remove_on_exec() sets remove-on-exec events to the EXIT state and detaches their group relationships. The event's file descriptor can remain open, however, and perf_event_open() currently accepts that event as a group leader because its early validation rejects only REVOKED and DEAD events. A new sibling can consequently be linked to the detached leader. When the leader is closed, perf_group_detach() observes that its PERF_ATTACH_GROUP bit is already clear and skips the new sibling. The sibling then retains a group_leader pointer to the freed event. Reject group leaders in the EXIT state. Perform the check while holding the shared context mutex so that an exec in the target task cannot detach the leader between validation and group attachment. [peterz: make the earlier test fully consistent]
Quoted source text, attributed separately from HOL analysis.