{"id":"DEBIAN-CVE-2024-42073","details":"In the Linux kernel, the following vulnerability has been resolved:  mlxsw: spectrum_buffers: Fix memory corruptions on Spectrum-4 systems  The following two shared buffer operations make use of the Shared Buffer Status Register (SBSR):   # devlink sb occupancy snapshot pci/0000:01:00.0  # devlink sb occupancy clearmax pci/0000:01:00.0  The register has two masks of 256 bits to denote on which ingress / egress ports the register should operate on. Spectrum-4 has more than 256 ports, so the register was extended by cited commit with a new 'port_page' field.  However, when filling the register's payload, the driver specifies the ports as absolute numbers and not relative to the first port of the port page, resulting in memory corruptions [1].  Fix by specifying the ports relative to the first port of the port page.  [1] BUG: KASAN: slab-use-after-free in mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0 Read of size 1 at addr ffff8881068cb00f by task devlink/1566 [...] Call Trace:  \u003cTASK\u003e  dump_stack_lvl+0xc6/0x120  print_report+0xce/0x670  kasan_report+0xd7/0x110  mlxsw_sp_sb_occ_snapshot+0xb6d/0xbc0  mlxsw_devlink_sb_occ_snapshot+0x75/0xb0  devlink_nl_sb_occ_snapshot_doit+0x1f9/0x2a0  genl_family_rcv_msg_doit+0x20c/0x300  genl_rcv_msg+0x567/0x800  netlink_rcv_skb+0x170/0x450  genl_rcv+0x2d/0x40  netlink_unicast+0x547/0x830  netlink_sendmsg+0x8d4/0xdb0  __sys_sendto+0x49b/0x510  __x64_sys_sendto+0xe5/0x1c0  do_syscall_64+0xc1/0x1d0  entry_SYSCALL_64_after_hwframe+0x77/0x7f [...] Allocated by task 1:  kasan_save_stack+0x33/0x60  kasan_save_track+0x14/0x30  __kasan_kmalloc+0x8f/0xa0  copy_verifier_state+0xbc2/0xfb0  do_check_common+0x2c51/0xc7e0  bpf_check+0x5107/0x9960  bpf_prog_load+0xf0e/0x2690  __sys_bpf+0x1a61/0x49d0  __x64_sys_bpf+0x7d/0xc0  do_syscall_64+0xc1/0x1d0  entry_SYSCALL_64_after_hwframe+0x77/0x7f  Freed by task 1:  kasan_save_stack+0x33/0x60  kasan_save_track+0x14/0x30  kasan_save_free_info+0x3b/0x60  poison_slab_object+0x109/0x170  __kasan_slab_free+0x14/0x30  kfree+0xca/0x2b0  free_verifier_state+0xce/0x270  do_check_common+0x4828/0xc7e0  bpf_check+0x5107/0x9960  bpf_prog_load+0xf0e/0x2690  __sys_bpf+0x1a61/0x49d0  __x64_sys_bpf+0x7d/0xc0  do_syscall_64+0xc1/0x1d0  entry_SYSCALL_64_after_hwframe+0x77/0x7f","modified":"2026-09-15T09:03:09.927741397Z","published":"2024-07-29T16:15:06.770Z","upstream":["CVE-2024-42073"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-42073"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.98-1"}]}],"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","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-42073.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-42073.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-42073.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"}]}