CVE-2026-89516: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: sched_ext: Don't BUG_ON a destroyed DSQ in process_deferred_reenq_users scx_bpf_dsq_reenq() queues a deferred reenq (dru) that runs from run_deferred(), not ops.dispatch(). If the DSQ is destroyed before the dru runs, process_deferred_reenq_users() sees dsq->id == SCX_DSQ_INVALID and hits the BUG_ON. destroy_dsq() doesn't flush pending drus, so just skip. tj: Read dsq->id once with READ_ONCE(). Reading it separately in the INVALID check and the BUG_ON would leave a window where destroy_dsq() can invalidate the id between the two reads and still trigger the BUG_ON.

Засегнати продукти

• Linux Linux: 84b1a0ea0b7c23dec240783a592e480780efe459 преди c480961a1e790b46ffd8c20c4b6754d65ec6572d; 84b1a0ea0b7c23dec240783a592e480780efe459 преди 8d8dd8ae89eaa78b37fc85528e926029f5facbdf
• Linux Linux: 7.1; преди 7.1; 7.2.4 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89516
• https://nvd.nist.gov/vuln/detail/CVE-2026-89516
• https://git.kernel.org/stable/c/c480961a1e790b46ffd8c20c4b6754d65ec6572d
• https://git.kernel.org/stable/c/8d8dd8ae89eaa78b37fc85528e926029f5facbdf