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vuln-cve/data/2026/64xxx/CVE-2026-64415.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-64415",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-07-19T15:36:31.786Z",
"datePublished": "2026-07-25T08:50:55.226Z",
"dateUpdated": "2026-08-17T04:55:14.532Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-17T04:55:14.532Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup\n\nWe hit a real softlockup in an internal stress test environment. The\nworkload was LTP memory/swap stress on a large arm64 machine, with 320\nCPUs, about 1TB memory and an 8.6GB swap device. The system was under\nheavy load and the swap device had a large number of full clusters. The\nsoftlockup was triggered during a stress test after about 3 days.\n\nSo, add periodic cond_resched() calls during large full_clusters\nreclaim operations to prevent softlockup issues.\n\nDetailed call trace as follow:\n\nPID: 3817773 TASK: ffff0883bb28b780 CPU: 48 COMMAND: \"kworker/48:7\"\n #0 [ffff800080183d10] __crash_kexec at ffffa4c1361e5de4\n #1 [ffff800080183d90] panic at ffffa4c1360d5e9c\n #2 [ffff800080183e20] watchdog_timer_fn at ffffa4c136231fa8\n ...\n #16 [ffff8000c4ad3cb0] swap_cache_del_folio at ffffa4c1363e1614\n #17 [ffff8000c4ad3ce0] __try_to_reclaim_swap at ffffa4c1363e4bfc\n #18 [ffff8000c4ad3d40] swap_reclaim_full_clusters at ffffa4c1363e5474\n #19 [ffff8000c4ad3da0] swap_reclaim_work at ffffa4c1363e550c\n #20 [ffff8000c4ad3dc0] process_one_work at ffffa4c136102edc\n #21 [ffff8000c4ad3e10] worker_thread at ffffa4c136103398\n #22 [ffff8000c4ad3e70] kthread at ffffa4c13610d95c"
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/swapfile.c"
],
"versions": [
{
"version": "5168a68eb78fa1c67a8b2d31d0642c7fd866cc12",
"lessThan": "60cbe67d1342f34b66df1c2ee328e3cd333767d7",
"status": "affected",
"versionType": "git"
},
{
"version": "5168a68eb78fa1c67a8b2d31d0642c7fd866cc12",
"lessThan": "69c0e6246575b780ae0d3f411c749bcf13c221f3",
"status": "affected",
"versionType": "git"
},
{
"version": "5168a68eb78fa1c67a8b2d31d0642c7fd866cc12",
"lessThan": "2a55fdf9f746a1a6ced7fd62ea1080b8a917e0b0",
"status": "affected",
"versionType": "git"
},
{
"version": "5168a68eb78fa1c67a8b2d31d0642c7fd866cc12",
"lessThan": "66366d291f666ddeda5f8c84f253e308de3e6b55",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"mm/swapfile.c"
],
"versions": [
{
"version": "6.12",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.12",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.96",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.39",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1.4",
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12",
"versionEndExcluding": "6.12.96"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12",
"versionEndExcluding": "6.18.39"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12",
"versionEndExcluding": "7.1.4"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12",
"versionEndExcluding": "7.2"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/60cbe67d1342f34b66df1c2ee328e3cd333767d7"
},
{
"url": "https://git.kernel.org/stable/c/69c0e6246575b780ae0d3f411c749bcf13c221f3"
},
{
"url": "https://git.kernel.org/stable/c/2a55fdf9f746a1a6ced7fd62ea1080b8a917e0b0"
},
{
"url": "https://git.kernel.org/stable/c/66366d291f666ddeda5f8c84f253e308de3e6b55"
}
],
"title": "mm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}