{"id":"CVE-2024-47687","state":"PUBLISHED","title":"vdpa/mlx5: Fix invalid mr resource destroy","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix invalid mr resource destroy\n\nCertain error paths from mlx5_vdpa_dev_add() can end up releasing mr\nresources which never got initialized in the first place.\n\nThis patch adds the missing check in mlx5_vdpa_destroy_mr_resources()\nto block releasing non-initialized mr resources.\n\nReference trace:\n\n  mlx5_core 0000:08:00.2: mlx5_vdpa_dev_add:3274:(pid 2700) warning: No mac address provisioned?\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  #PF: supervisor read access in kernel mode\n  #PF: error_code(0x0000) - not-present page\n  PGD 140216067 P4D 0\n  Oops: 0000 [#1] PREEMPT SMP NOPTI\n  CPU: 8 PID: 2700 Comm: vdpa Kdump: loaded Not tainted 5.14.0-496.el9.x86_64 #1\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n  RIP: 0010:vhost_iotlb_del_range+0xf/0xe0 [vhost_iotlb]\n  Code: [...]\n  RSP: 0018:ff1c823ac23077f0 EFLAGS: 00010246\n  RAX: ffffffffc1a21a60 RBX: ffffffff899567a0 RCX: 0000000000000000\n  RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000000000000\n  RBP: ff1bda1f7c21e800 R08: 0000000000000000 R09: ff1c823ac2307670\n  R10: ff1c823ac2307668 R11: ffffffff8a9e7b68 R12: 0000000000000000\n  R13: 0000000000000000 R14: ff1bda1f43e341a0 R15: 00000000ffffffea\n  FS:  00007f56eba7c740(0000) GS:ff1bda269f800000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 0000000000000000 CR3: 0000000104d90001 CR4: 0000000000771ef0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  PKRU: 55555554\n  Call Trace:\n\n   ? show_trace_log_lvl+0x1c4/0x2df\n   ? show_trace_log_lvl+0x1c4/0x2df\n   ? mlx5_vdpa_free+0x3d/0x150 [mlx5_vdpa]\n   ? __die_body.cold+0x8/0xd\n   ? page_fault_oops+0x134/0x170\n   ? __irq_work_queue_local+0x2b/0xc0\n   ? irq_work_queue+0x2c/0x50\n   ? exc_page_fault+0x62/0x150\n   ? asm_exc_page_fault+0x22/0x30\n   ? __pfx_mlx5_vdpa_free+0x10/0x10 [mlx5_vdpa]\n   ? vhost_iotlb_del_range+0xf/0xe0 [vhost_iotlb]\n   mlx5_vdpa_free+0x3d/0x150 [mlx5_vdpa]\n   vdpa_release_dev+0x1e/0x50 [vdpa]\n   device_release+0x31/0x90\n   kobject_cleanup+0x37/0x130\n   mlx5_vdpa_dev_add+0x2d2/0x7a0 [mlx5_vdpa]\n   vdpa_nl_cmd_dev_add_set_doit+0x277/0x4c0 [vdpa]\n   genl_family_rcv_msg_doit+0xd9/0x130\n   genl_family_rcv_msg+0x14d/0x220\n   ? __pfx_vdpa_nl_cmd_dev_add_set_doit+0x10/0x10 [vdpa]\n   ? _copy_to_user+0x1a/0x30\n   ? move_addr_to_user+0x4b/0xe0\n   genl_rcv_msg+0x47/0xa0\n   ? __import_iovec+0x46/0x150\n   ? __pfx_genl_rcv_msg+0x10/0x10\n   netlink_rcv_skb+0x54/0x100\n   genl_rcv+0x24/0x40\n   netlink_unicast+0x245/0x370\n   netlink_sendmsg+0x206/0x440\n   __sys_sendto+0x1dc/0x1f0\n   ? do_read_fault+0x10c/0x1d0\n   ? do_pte_missing+0x10d/0x190\n   __x64_sys_sendto+0x20/0x30\n   do_syscall_64+0x5c/0xf0\n   ? __count_memcg_events+0x4f/0xb0\n   ? mm_account_fault+0x6c/0x100\n   ? handle_mm_fault+0x116/0x270\n   ? do_user_addr_fault+0x1d6/0x6a0\n   ? do_syscall_64+0x6b/0xf0\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   entry_SYSCALL_64_after_hwframe+0x78/0x80","publishedAt":"2024-10-21T11:53:27.834Z","updatedAt":"2026-05-11T20:38:49.350Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"512c0cdd80c19ec11f6dbe769d5899dcfefcd5c9","status":"affected","lessThan":"b6fbb1c7801f46a0e5461c02904eab0d7535c790","versionType":"git"},{"version":"512c0cdd80c19ec11f6dbe769d5899dcfefcd5c9","status":"affected","lessThan":"5fe351def237df1ad29aa8af574350bc5340b4cf","versionType":"git"},{"version":"512c0cdd80c19ec11f6dbe769d5899dcfefcd5c9","status":"affected","lessThan":"dc12502905b7a3de9097ea6b98870470c2921e09","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vdpa/mlx5/core/mr.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.10.13","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11.2","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vdpa/mlx5/core/mr.c"]}],"references":["https://git.kernel.org/stable/c/b6fbb1c7801f46a0e5461c02904eab0d7535c790","https://git.kernel.org/stable/c/5fe351def237df1ad29aa8af574350bc5340b4cf","https://git.kernel.org/stable/c/dc12502905b7a3de9097ea6b98870470c2921e09"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:56.516Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/47xxx/CVE-2024-47687.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-47687","state":"PUBLISHED","datePublished":"2024-10-21T11:53:27.834Z","dateUpdated":"2026-05-11T20:38:49.350Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-09-30T16:00:12.941Z"},"containers":{"cna":{"title":"vdpa/mlx5: Fix invalid mr resource destroy","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix invalid mr resource destroy\n\nCertain error paths from mlx5_vdpa_dev_add() can end up releasing mr\nresources which never got initialized in the first place.\n\nThis patch adds the missing check in mlx5_vdpa_destroy_mr_resources()\nto block releasing non-initialized mr resources.\n\nReference trace:\n\n  mlx5_core 0000:08:00.2: mlx5_vdpa_dev_add:3274:(pid 2700) warning: No mac address provisioned?\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  #PF: supervisor read access in kernel mode\n  #PF: error_code(0x0000) - not-present page\n  PGD 140216067 P4D 0\n  Oops: 0000 [#1] PREEMPT SMP NOPTI\n  CPU: 8 PID: 2700 Comm: vdpa Kdump: loaded Not tainted 5.14.0-496.el9.x86_64 #1\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n  RIP: 0010:vhost_iotlb_del_range+0xf/0xe0 [vhost_iotlb]\n  Code: [...]\n  RSP: 0018:ff1c823ac23077f0 EFLAGS: 00010246\n  RAX: ffffffffc1a21a60 RBX: ffffffff899567a0 RCX: 0000000000000000\n  RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000000000000\n  RBP: ff1bda1f7c21e800 R08: 0000000000000000 R09: ff1c823ac2307670\n  R10: ff1c823ac2307668 R11: ffffffff8a9e7b68 R12: 0000000000000000\n  R13: 0000000000000000 R14: ff1bda1f43e341a0 R15: 00000000ffffffea\n  FS:  00007f56eba7c740(0000) GS:ff1bda269f800000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 0000000000000000 CR3: 0000000104d90001 CR4: 0000000000771ef0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  PKRU: 55555554\n  Call Trace:\n\n   ? show_trace_log_lvl+0x1c4/0x2df\n   ? show_trace_log_lvl+0x1c4/0x2df\n   ? mlx5_vdpa_free+0x3d/0x150 [mlx5_vdpa]\n   ? __die_body.cold+0x8/0xd\n   ? page_fault_oops+0x134/0x170\n   ? __irq_work_queue_local+0x2b/0xc0\n   ? irq_work_queue+0x2c/0x50\n   ? exc_page_fault+0x62/0x150\n   ? asm_exc_page_fault+0x22/0x30\n   ? __pfx_mlx5_vdpa_free+0x10/0x10 [mlx5_vdpa]\n   ? vhost_iotlb_del_range+0xf/0xe0 [vhost_iotlb]\n   mlx5_vdpa_free+0x3d/0x150 [mlx5_vdpa]\n   vdpa_release_dev+0x1e/0x50 [vdpa]\n   device_release+0x31/0x90\n   kobject_cleanup+0x37/0x130\n   mlx5_vdpa_dev_add+0x2d2/0x7a0 [mlx5_vdpa]\n   vdpa_nl_cmd_dev_add_set_doit+0x277/0x4c0 [vdpa]\n   genl_family_rcv_msg_doit+0xd9/0x130\n   genl_family_rcv_msg+0x14d/0x220\n   ? __pfx_vdpa_nl_cmd_dev_add_set_doit+0x10/0x10 [vdpa]\n   ? _copy_to_user+0x1a/0x30\n   ? move_addr_to_user+0x4b/0xe0\n   genl_rcv_msg+0x47/0xa0\n   ? __import_iovec+0x46/0x150\n   ? __pfx_genl_rcv_msg+0x10/0x10\n   netlink_rcv_skb+0x54/0x100\n   genl_rcv+0x24/0x40\n   netlink_unicast+0x245/0x370\n   netlink_sendmsg+0x206/0x440\n   __sys_sendto+0x1dc/0x1f0\n   ? do_read_fault+0x10c/0x1d0\n   ? do_pte_missing+0x10d/0x190\n   __x64_sys_sendto+0x20/0x30\n   do_syscall_64+0x5c/0xf0\n   ? __count_memcg_events+0x4f/0xb0\n   ? mm_account_fault+0x6c/0x100\n   ? handle_mm_fault+0x116/0x270\n   ? do_user_addr_fault+0x1d6/0x6a0\n   ? do_syscall_64+0x6b/0xf0\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   ? clear_bhb_loop+0x25/0x80\n   entry_SYSCALL_64_after_hwframe+0x78/0x80"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"512c0cdd80c19ec11f6dbe769d5899dcfefcd5c9","status":"affected","lessThan":"b6fbb1c7801f46a0e5461c02904eab0d7535c790","versionType":"git"},{"version":"512c0cdd80c19ec11f6dbe769d5899dcfefcd5c9","status":"affected","lessThan":"5fe351def237df1ad29aa8af574350bc5340b4cf","versionType":"git"},{"version":"512c0cdd80c19ec11f6dbe769d5899dcfefcd5c9","status":"affected","lessThan":"dc12502905b7a3de9097ea6b98870470c2921e09","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vdpa/mlx5/core/mr.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.10.13","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11.2","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vdpa/mlx5/core/mr.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b6fbb1c7801f46a0e5461c02904eab0d7535c790"},{"url":"https://git.kernel.org/stable/c/5fe351def237df1ad29aa8af574350bc5340b4cf"},{"url":"https://git.kernel.org/stable/c/dc12502905b7a3de9097ea6b98870470c2921e09"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:38:49.350Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.10.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.11.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-47687","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-21T13:06:29.452318Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-10-21T13:14:15.726Z"}}]}}}