{"id":"DEBIAN-CVE-2024-26901","details":"In the Linux kernel, the following vulnerability has been resolved:  do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak  syzbot identified a kernel information leak vulnerability in do_sys_name_to_handle() and issued the following report [1].  [1] \"BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40  instrument_copy_to_user include/linux/instrumented.h:114 [inline]  _copy_to_user+0xbc/0x100 lib/usercopy.c:40  copy_to_user include/linux/uaccess.h:191 [inline]  do_sys_name_to_handle fs/fhandle.c:73 [inline]  __do_sys_name_to_handle_at fs/fhandle.c:112 [inline]  __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94  __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94  ...  Uninit was created at:  slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768  slab_alloc_node mm/slub.c:3478 [inline]  __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517  __do_kmalloc_node mm/slab_common.c:1006 [inline]  __kmalloc+0x121/0x3c0 mm/slab_common.c:1020  kmalloc include/linux/slab.h:604 [inline]  do_sys_name_to_handle fs/fhandle.c:39 [inline]  __do_sys_name_to_handle_at fs/fhandle.c:112 [inline]  __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94  __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94  ...  Bytes 18-19 of 20 are uninitialized Memory access of size 20 starts at ffff888128a46380 Data copied to user address 0000000020000240\"  Per Chuck Lever's suggestion, use kzalloc() instead of kmalloc() to solve the problem.","modified":"2026-09-15T09:03:05.773120384Z","published":"2024-04-17T11:15:10.960Z","upstream":["CVE-2024-26901"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-26901"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.85-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26901.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26901.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26901.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}