| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost/scsi: null-ptr-dereference in vhost_scsi_get_req()\n\nSince commit 3f8ca2e115e5 (\"vhost/scsi: Extract common handling code\nfrom control queue handler\") a null pointer dereference bug can be\ntriggered when guest sends an SCSI AN request.\n\nIn vhost_scsi_ctl_handle_vq(), `vc.target` is assigned with\n`&v_req.tmf.lun[1]` within a switch-case block and is then passed to\nvhost_scsi_get_req() which extracts `vc->req` and `tpg`. However, for\na `VIRTIO_SCSI_T_AN_*` request, tpg is not required, so `vc.target` is\nset to NULL in this branch. Later, in vhost_scsi_get_req(),\n`vc->target` is dereferenced without being checked, leading to a null\npointer dereference bug. This bug can be triggered from guest.\n\nWhen this bug occurs, the vhost_worker process is killed while holding\n`vq->mutex` and the corresponding tpg will remain occupied\nindefinitely.\n\nBelow is the KASAN report:\nOops: general protection fault, probably for non-canonical address\n0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 1 PID: 840 Comm: poc Not tainted 6.10.0+ #1\nHardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS\n1.16.3-debian-1.16.3-2 04/01/2014\nRIP: 0010:vhost_scsi_get_req+0x165/0x3a0\nCode: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2b 02 00 00\n48 b8 00 00 00 00 00 fc ff df 4d 8b 65 30 4c 89 e2 48 c1 ea 03 <0f> b6\n04 02 4c 89 e2 83 e2 07 38 d0 7f 08 84 c0 0f 85 be 01 00 00\nRSP: 0018:ffff888017affb50 EFLAGS: 00010246\nRAX: dffffc0000000000 RBX: ffff88801b000000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888017affcb8\nRBP: ffff888017affb80 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000\nR13: ffff888017affc88 R14: ffff888017affd1c R15: ffff888017993000\nFS: 000055556e076500(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00000000200027c0 CR3: 0000000010ed0004 CR4: 0000000000370ef0\nCall Trace:\n <TASK>\n ? show_regs+0x86/0xa0\n ? die_addr+0x4b/0xd0\n ? exc_general_protection+0x163/0x260\n ? asm_exc_general_protection+0x27/0x30\n ? vhost_scsi_get_req+0x165/0x3a0\n vhost_scsi_ctl_handle_vq+0x2a4/0xca0\n ? __pfx_vhost_scsi_ctl_handle_vq+0x10/0x10\n ? __switch_to+0x721/0xeb0\n ? __schedule+0xda5/0x5710\n ? __kasan_check_write+0x14/0x30\n ? _raw_spin_lock+0x82/0xf0\n vhost_scsi_ctl_handle_kick+0x52/0x90\n vhost_run_work_list+0x134/0x1b0\n vhost_task_fn+0x121/0x350\n...\n </TASK>\n---[ end trace 0000000000000000 ]---\n\nLet's add a check in vhost_scsi_get_req.\n\n[whitespace fixes]" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/vhost/scsi.c" |
| ], |
| "versions": [ |
| { |
| "version": "3f8ca2e115e55af4c15d97dda635e948d2e380be", |
| "lessThan": "6592347f06e2b19a624270a85ad4b3ae48c3b241", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "3f8ca2e115e55af4c15d97dda635e948d2e380be", |
| "lessThan": "46128370a72c431df733af5ebb065c4d48c9ad39", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "3f8ca2e115e55af4c15d97dda635e948d2e380be", |
| "lessThan": "ace9c778a214da9c98d7b69d904d1b0816f4f681", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "3f8ca2e115e55af4c15d97dda635e948d2e380be", |
| "lessThan": "25613e6d9841a1f9fb985be90df921fa99f800de", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "3f8ca2e115e55af4c15d97dda635e948d2e380be", |
| "lessThan": "00fb5b23e1c9cdbe496f5cd6b40367cb895f6c93", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "3f8ca2e115e55af4c15d97dda635e948d2e380be", |
| "lessThan": "61517f33e76d2c5247c1e61e668693afe5b67e6f", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "3f8ca2e115e55af4c15d97dda635e948d2e380be", |
| "lessThan": "221af82f606d928ccef19a16d35633c63026f1be", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/vhost/scsi.c" |
| ], |
| "versions": [ |
| { |
| "version": "4.20", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "4.20", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.227", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.168", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.113", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.55", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.10.14", |
| "lessThanOrEqual": "6.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.3", |
| "lessThanOrEqual": "6.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12", |
| "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": "4.20", |
| "versionEndExcluding": "5.10.227" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "5.15.168" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "6.1.113" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "6.6.55" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "6.10.14" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "6.11.3" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.20", |
| "versionEndExcluding": "6.12" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/6592347f06e2b19a624270a85ad4b3ae48c3b241" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/46128370a72c431df733af5ebb065c4d48c9ad39" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/ace9c778a214da9c98d7b69d904d1b0816f4f681" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/25613e6d9841a1f9fb985be90df921fa99f800de" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/00fb5b23e1c9cdbe496f5cd6b40367cb895f6c93" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/61517f33e76d2c5247c1e61e668693afe5b67e6f" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/221af82f606d928ccef19a16d35633c63026f1be" |
| } |
| ], |
| "title": "vhost/scsi: null-ptr-dereference in vhost_scsi_get_req()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-49863", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
