{"id":"CVE-2024-26901","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndo_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak\n\nsyzbot identified a kernel information leak vulnerability in\ndo_sys_name_to_handle() and issued the follo…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndo_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak\n\nsyzbot identified a kernel information leak vulnerability in\ndo_sys_name_to_handle() and issued the follo…","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","cwe":["CWE-908"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.39, < 4.19.311","linux_kernel >= 4.20, < 5.4.273","linux_kernel >= 5.5, < 5.10.214","linux_kernel >= 5.11, < 5.15.153","linux_kernel >= 5.16, < 6.1.83","linux_kernel >= 6.2, < 6.6.23","linux_kernel >= 6.7, < 6.7.11","linux_kernel >= 6.8, < 6.8.2"],"patched":["linux_kernel 6.8.2"],"published":"2024-04-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:30.863","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-26901","references":[{"url":"https://git.kernel.org/stable/c/3948abaa4e2be938ccdfc289385a27342fb13d43","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/423b6bdf19bbc5e1f7e7461045099917378f7e71","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bf9ec1b24ab4e94345aa1c60811dd329f069c38b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c1362eae861db28b1608b9dc23e49634fe87b63b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cba138f1ef37ec6f961baeab62f312dedc7cf730","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cde76b3af247f615447bcfecf610bb76c3529126","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e6450d5e46a737a008b4885aa223486113bf0ad6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3948abaa4e2be938ccdfc289385a27342fb13d43","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/423b6bdf19bbc5e1f7e7461045099917378f7e71","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/bf9ec1b24ab4e94345aa1c60811dd329f069c38b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/c1362eae861db28b1608b9dc23e49634fe87b63b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/cba138f1ef37ec6f961baeab62f312dedc7cf730","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/cde76b3af247f615447bcfecf610bb76c3529126","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e6450d5e46a737a008b4885aa223486113bf0ad6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.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":0.00828,"epssPercentile":0.57311,"ingestedAt":"2026-10-15T03:30:12.659Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-07-16T15:11:22.418196Z"},"scores":{"nvd":5.5,"adp":5.3},"slug":"CVE-2024-26901","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndo_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak\n\nsyzbot identified a kernel information leak vulnerability in\ndo_sys_name_to_handle() and issued the following report [1].\n\n[1]\n\"BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\nBUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40\n instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n _copy_to_user+0xbc/0x100 lib/usercopy.c:40\n copy_to_user include/linux/uaccess.h:191 [inline]\n do_sys_name_to_handle fs/fhandle.c:73 [inline]\n __do_sys_name_to_handle_at fs/fhandle.c:112 [inline]\n __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94\n __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94\n ...\n\nUninit was created at:\n slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768\n slab_alloc_node mm/slub.c:3478 [inline]\n __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517\n __do_kmalloc_node mm/slab_common.c:1006 [inline]\n __kmalloc+0x121/0x3c0 mm/slab_common.c:1020\n kmalloc include/linux/slab.h:604 [inline]\n do_sys_name_to_handle fs/fhandle.c:39 [inline]\n __do_sys_name_to_handle_at fs/fhandle.c:112 [inline]\n __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94\n __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94\n ...\n\nBytes 18-19 of 20 are uninitialized\nMemory access of size 20 starts at ffff888128a46380\nData copied to user address 0000000020000240\"\n\nPer Chuck Lever's suggestion, use kzalloc() instead of kmalloc() to\nsolve the problem.\n\n## Affected\n\n- `linux_kernel >= 2.6.39, < 4.19.311`\n- `linux_kernel >= 4.20, < 5.4.273`\n- `linux_kernel >= 5.5, < 5.10.214`\n- `linux_kernel >= 5.11, < 5.15.153`\n- `linux_kernel >= 5.16, < 6.1.83`\n- `linux_kernel >= 6.2, < 6.6.23`\n- `linux_kernel >= 6.7, < 6.7.11`\n- `linux_kernel >= 6.8, < 6.8.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.8.2`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}