CVE-2026-74753

CVE CVE-2026-74753EUVD EUVD-2026-66583Published 2026-08-26T14:37:00.000ZLast changed 2026-09-02T12:49:47.000ZCVSS 7.8

What the advisory describes

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]

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux 6.18.39 <6.18.46; 4cdb1b3ab96eb1b7eb70bc5c82fede334bd60df2 <ce12e1170c0c78dffb9b28af6d287492ae7dd99d; 6.12.96 <6.12.108; 7.1.4 <7.1.10; 037a3c43edfb597665dd34457cd22b14692f2ba3 <fa091f46c3833fb22384f10eade2b4e1e1d0b278; a2d5d3ee7b6e3953114726b1521e62123ab5b043 <7a03413f31c196ab3894f988cdce0bb47b4fec42; 06ccef0434e98058ddae7bcebc901f93d22b7653 <7ce010275c531475f9d6e7efb11b9e522c74ed2e; 6.6.145 <6.6.156; 39358e856fb89e62e3c8d7389a2dc4ec33dbe90e <e593031ff19a9484e8a00bc47edd447187721846

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.