{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-26901", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "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 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." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "990d6c2d7aee", "version_value": "4bac28f441e3" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "2.6.39", "status": "affected" }, { "version": "0", "lessThan": "2.6.39", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.311", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.273", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1" }, { "url": "https://git.kernel.org/stable/c/772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b" }, { "url": "https://git.kernel.org/stable/c/cde76b3af247f615447bcfecf610bb76c3529126", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/cde76b3af247f615447bcfecf610bb76c3529126" }, { "url": "https://git.kernel.org/stable/c/423b6bdf19bbc5e1f7e7461045099917378f7e71", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/423b6bdf19bbc5e1f7e7461045099917378f7e71" }, { "url": "https://git.kernel.org/stable/c/e6450d5e46a737a008b4885aa223486113bf0ad6", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/e6450d5e46a737a008b4885aa223486113bf0ad6" }, { "url": "https://git.kernel.org/stable/c/c1362eae861db28b1608b9dc23e49634fe87b63b", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/c1362eae861db28b1608b9dc23e49634fe87b63b" }, { "url": "https://git.kernel.org/stable/c/cba138f1ef37ec6f961baeab62f312dedc7cf730", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/cba138f1ef37ec6f961baeab62f312dedc7cf730" }, { "url": "https://git.kernel.org/stable/c/bf9ec1b24ab4e94345aa1c60811dd329f069c38b", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/bf9ec1b24ab4e94345aa1c60811dd329f069c38b" }, { "url": "https://git.kernel.org/stable/c/3948abaa4e2be938ccdfc289385a27342fb13d43", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/3948abaa4e2be938ccdfc289385a27342fb13d43" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html" } ] }, "generator": { "engine": "bippy-a5840b7849dd" } }