CVE-2026-64415

CVE CVE-2026-64415EUVD EUVD-2026-48959Published 2026-07-25T08:50:55.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: mm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup We hit a real softlockup in an internal stress test environment. The workload was LTP memory/swap stress on a large arm64 machine, with 320 CPUs, about 1TB memory and an 8.6GB swap device. The system was under heavy load and the swap device had a large number of full clusters. The softlockup was triggered during a stress test after about 3 days. So, add periodic cond_resched() calls during large full_clusters reclaim operations to prevent softlockup issues. Detailed call trace as follow: PID: 3817773 TASK: ffff0883bb28b780 CPU: 48 COMMAND: "kworker/48:7" #0 [ffff800080183d10] __crash_kexec at ffffa4c1361e5de4 #1 [ffff800080183d90] panic at ffffa4c1360d5e9c #2 [ffff800080183e20] watchdog_timer_fn at ffffa4c136231fa8 ... #16 [ffff8000c4ad3cb0] swap_cache_del_folio at ffffa4c1363e1614 #17 [ffff8000c4ad3ce0] __try_to_reclaim_swap at ffffa4c1363e4bfc #18 [ffff8000c4ad3d40] swap_reclaim_full_clusters at ffffa4c1363e5474 #19 [ffff8000c4ad3da0] swap_reclaim_work at ffffa4c1363e550c #20 [ffff8000c4ad3dc0] process_one_work at ffffa4c136102edc #21 [ffff8000c4ad3e10] worker_thread at ffffa4c136103398 #22 [ffff8000c4ad3e70] kthread at ffffa4c13610d95c

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 patch: 7.1.4; 5168a68eb78fa1c67a8b2d31d0642c7fd866cc12 <69c0e6246575b780ae0d3f411c749bcf13c221f3; patch: 0; 5168a68eb78fa1c67a8b2d31d0642c7fd866cc12 <2a55fdf9f746a1a6ced7fd62ea1080b8a917e0b0; 5168a68eb78fa1c67a8b2d31d0642c7fd866cc12 <60cbe67d1342f34b66df1c2ee328e3cd333767d7; 5168a68eb78fa1c67a8b2d31d0642c7fd866cc12 <66366d291f666ddeda5f8c84f253e308de3e6b55; patch: 7.2-rc1; patch: 6.18.39; 6.12; patch: 6.12.96

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

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Linux — Linux

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