{"id":"CVE-2024-44965","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Fix pti_clone_pgtable() alignment assumption\n\nGuenter reported dodgy crashes on an i386-nosmp build using GCC-11\nthat had the form of endless traps until entry …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Fix pti_clone_pgtable() alignment assumption\n\nGuenter reported dodgy crashes on an i386-nosmp build using GCC-11\nthat had the form of endless traps until entry …","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.19, < 4.19.320","linux_kernel >= 4.20, < 5.4.282","linux_kernel >= 5.5, < 5.10.224","linux_kernel >= 5.11, < 5.15.165","linux_kernel >= 5.16, < 6.1.105","linux_kernel >= 6.2, < 6.6.46","linux_kernel >= 6.7, < 6.10.5","linux_kernel = 6.11"],"patched":["linux_kernel 6.10.5"],"published":"2024-09-04","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:18:50.483","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-44965","references":[{"url":"https://git.kernel.org/stable/c/18da1b27ce16a14a9b636af9232acb4fb24f4c9e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/25a727233a40a9b33370eec9f0cad67d8fd312f8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/41e71dbb0e0a0fe214545fe64af031303a08524c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4d143ae782009b43b4f366402e5c37f59d4e4346","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5c580c1050bcbc15c3e78090859d798dcf8c9763","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2ed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/df3eecb5496f87263d171b254ca6e2758ab3c35c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00222,"epssPercentile":0.1188,"ingestedAt":"2026-10-15T03:30:12.739Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-09-10T17:39:33.847439Z"},"slug":"CVE-2024-44965","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Fix pti_clone_pgtable() alignment assumption\n\nGuenter reported dodgy crashes on an i386-nosmp build using GCC-11\nthat had the form of endless traps until entry stack exhaust and then\n#DF from the stack guard.\n\nIt turned out that pti_clone_pgtable() had alignment assumptions on\nthe start address, notably it hard assumes start is PMD aligned. This\nis true on x86_64, but very much not true on i386.\n\nThese assumptions can cause the end condition to malfunction, leading\nto a 'short' clone. Guess what happens when the user mapping has a\nshort copy of the entry text?\n\nUse the correct increment form for addr to avoid alignment\nassumptions.\n\n## Affected\n\n- `linux_kernel >= 4.19, < 4.19.320`\n- `linux_kernel >= 4.20, < 5.4.282`\n- `linux_kernel >= 5.5, < 5.10.224`\n- `linux_kernel >= 5.11, < 5.15.165`\n- `linux_kernel >= 5.16, < 6.1.105`\n- `linux_kernel >= 6.2, < 6.6.46`\n- `linux_kernel >= 6.7, < 6.10.5`\n- `linux_kernel = 6.11`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.10.5`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}