| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio/vsock: Fix uninit-value in virtio_transport_recv_pkt()\n\nKMSAN reported the following uninit-value access issue:\n\n=====================================================\nBUG: KMSAN: uninit-value in virtio_transport_recv_pkt+0x1dfb/0x26a0 net/vmw_vsock/virtio_transport_common.c:1421\n virtio_transport_recv_pkt+0x1dfb/0x26a0 net/vmw_vsock/virtio_transport_common.c:1421\n vsock_loopback_work+0x3bb/0x5a0 net/vmw_vsock/vsock_loopback.c:120\n process_one_work kernel/workqueue.c:2630 [inline]\n process_scheduled_works+0xff6/0x1e60 kernel/workqueue.c:2703\n worker_thread+0xeca/0x14d0 kernel/workqueue.c:2784\n kthread+0x3cc/0x520 kernel/kthread.c:388\n ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304\n\nUninit was stored to memory at:\n virtio_transport_space_update net/vmw_vsock/virtio_transport_common.c:1274 [inline]\n virtio_transport_recv_pkt+0x1ee8/0x26a0 net/vmw_vsock/virtio_transport_common.c:1415\n vsock_loopback_work+0x3bb/0x5a0 net/vmw_vsock/vsock_loopback.c:120\n process_one_work kernel/workqueue.c:2630 [inline]\n process_scheduled_works+0xff6/0x1e60 kernel/workqueue.c:2703\n worker_thread+0xeca/0x14d0 kernel/workqueue.c:2784\n kthread+0x3cc/0x520 kernel/kthread.c:388\n ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304\n\nUninit was created at:\n slab_post_alloc_hook+0x105/0xad0 mm/slab.h:767\n slab_alloc_node mm/slub.c:3478 [inline]\n kmem_cache_alloc_node+0x5a2/0xaf0 mm/slub.c:3523\n kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:559\n __alloc_skb+0x2fd/0x770 net/core/skbuff.c:650\n alloc_skb include/linux/skbuff.h:1286 [inline]\n virtio_vsock_alloc_skb include/linux/virtio_vsock.h:66 [inline]\n virtio_transport_alloc_skb+0x90/0x11e0 net/vmw_vsock/virtio_transport_common.c:58\n virtio_transport_reset_no_sock net/vmw_vsock/virtio_transport_common.c:957 [inline]\n virtio_transport_recv_pkt+0x1279/0x26a0 net/vmw_vsock/virtio_transport_common.c:1387\n vsock_loopback_work+0x3bb/0x5a0 net/vmw_vsock/vsock_loopback.c:120\n process_one_work kernel/workqueue.c:2630 [inline]\n process_scheduled_works+0xff6/0x1e60 kernel/workqueue.c:2703\n worker_thread+0xeca/0x14d0 kernel/workqueue.c:2784\n kthread+0x3cc/0x520 kernel/kthread.c:388\n ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304\n\nCPU: 1 PID: 10664 Comm: kworker/1:5 Not tainted 6.6.0-rc3-00146-g9f3ebbef746f #3\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014\nWorkqueue: vsock-loopback vsock_loopback_work\n=====================================================\n\nThe following simple reproducer can cause the issue described above:\n\nint main(void)\n{\n int sock;\n struct sockaddr_vm addr = {\n .svm_family = AF_VSOCK,\n .svm_cid = VMADDR_CID_ANY,\n .svm_port = 1234,\n };\n\n sock = socket(AF_VSOCK, SOCK_STREAM, 0);\n connect(sock, (struct sockaddr *)&addr, sizeof(addr));\n return 0;\n}\n\nThis issue occurs because the `buf_alloc` and `fwd_cnt` fields of the\n`struct virtio_vsock_hdr` are not initialized when a new skb is allocated\nin `virtio_transport_init_hdr()`. This patch resolves the issue by\ninitializing these fields during allocation." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/vmw_vsock/virtio_transport_common.c" |
| ], |
| "versions": [ |
| { |
| "version": "baddcc2c71572968cdaeee1c4ab3dc0ad90fa765", |
| "lessThan": "cd12535b97dd7d18cf655ec78ce1cf1f29a576be", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "71dc9ec9ac7d3eee785cdc986c3daeb821381e20", |
| "lessThan": "0b8906fb48b99e993d6e8a12539f618f4854dd26", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "71dc9ec9ac7d3eee785cdc986c3daeb821381e20", |
| "lessThan": "34c4effacfc329aeca5635a69fd9e0f6c90b4101", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/vmw_vsock/virtio_transport_common.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.3", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.3", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.2", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.7", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.3", |
| "versionEndExcluding": "6.6.2" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.3", |
| "versionEndExcluding": "6.7" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/cd12535b97dd7d18cf655ec78ce1cf1f29a576be" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/0b8906fb48b99e993d6e8a12539f618f4854dd26" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/34c4effacfc329aeca5635a69fd9e0f6c90b4101" |
| } |
| ], |
| "title": "virtio/vsock: Fix uninit-value in virtio_transport_recv_pkt()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2023-52842", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
