{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50885", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:26:05.425Z", "datePublished": "2025-12-30T12:34:12.093Z", "dateUpdated": "2026-08-05T08:59:57.434Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:59:57.434Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed\n\nThere is a null-ptr-deref when mount.cifs over rdma:\n\n BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n Read of size 8 at addr 0000000000000018 by task mount.cifs/3046\n\n CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3\n Call Trace:\n \n dump_stack_lvl+0x34/0x44\n kasan_report+0xad/0x130\n rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n execute_in_process_context+0x25/0x90\n __rxe_cleanup+0x101/0x1d0 [rdma_rxe]\n rxe_create_qp+0x16a/0x180 [rdma_rxe]\n create_qp.part.0+0x27d/0x340\n ib_create_qp_kernel+0x73/0x160\n rdma_create_qp+0x100/0x230\n _smbd_get_connection+0x752/0x20f0\n smbd_get_connection+0x21/0x40\n cifs_get_tcp_session+0x8ef/0xda0\n mount_get_conns+0x60/0x750\n cifs_mount+0x103/0xd00\n cifs_smb3_do_mount+0x1dd/0xcb0\n smb3_get_tree+0x1d5/0x300\n vfs_get_tree+0x41/0xf0\n path_mount+0x9b3/0xdd0\n __x64_sys_mount+0x190/0x1d0\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe root cause of the issue is the socket create failed in\nrxe_qp_init_req().\n\nSo move the reset rxe_qp_do_cleanup() after the NULL ptr check." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - Soft-RoCE (UDP/4791) backs network RDMA servers such as ksmbd SMB Direct and nvmet-rdma; on RDMA_CM CONNECT_REQUEST those ULPs create an IB_QPT_RC QP through rxe_create_qp, so a remote peer drives the vulnerable create/cleanup path.\nAC:L - A remote peer can open many Soft-RoCE RC connections until sock_create_kern fails (ENFILE/ENOMEM), then the next create hits rxe_qp_do_cleanup with qp->sk == NULL and oopses deterministically; both exhaustion and the failing create are attacker-controlled.\nPR:N - QP creation for ksmbd smbdirect and nvmet-rdma occurs on RDMA_CM CONNECT_REQUEST before any ULP authentication, so an unauthenticated network peer reaches the bug.\nUI:N - Exploitation needs only attacker-initiated RDMA CM connections (or local uverbs create_qp); no victim mount, click, or other interaction is required.\nS:U - The NULL dereference crashes the host kernel within the same security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:N - The fault is a pure NULL-pointer read (sk_dst_reset(qp->sk->sk) with qp->sk == NULL, KASAN address 0x18) with no UAF, OOB read, or other disclosure primitive.\nI:N - No memory is written or corrupted before the oops; there is no arbitrary write, type confusion, or control-flow hijack path from this bug alone.\nA:H - The NULL dereference produces a kernel oops/panic on the create-failure cleanup path and can be re-triggered by further connection attempts after resource exhaustion." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/infiniband/sw/rxe/rxe_qp.c" ], "versions": [ { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "ee24de095569935eba600f7735e8e8ddea5b418e", "status": "affected", "versionType": "git" }, { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "7340ca9f782be6fbe3f64a134dc112772764f766", "status": "affected", "versionType": "git" }, { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "bd7106a6004f1077a365ca7f5a99c7a708e20714", "status": "affected", "versionType": "git" }, { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "6bb5a62bfd624039b05157745c234068508393a9", "status": "affected", "versionType": "git" }, { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "f64f08b9e6fb305a25dd75329e06ae342b9ce336", "status": "affected", "versionType": "git" }, { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "5b924632d84a60bc0c7fe6e9bbbce99d03908957", "status": "affected", "versionType": "git" }, { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "821f9a18210f6b9fd6792471714c799607b25db4", "status": "affected", "versionType": "git" }, { "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "f67376d801499f4fa0838c18c1efcad8840e550d", "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/infiniband/sw/rxe/rxe_qp.c" ], "versions": [ { "version": "4.8", "status": "affected" }, { "version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "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": "4.8", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.15.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ee24de095569935eba600f7735e8e8ddea5b418e" }, { "url": "https://git.kernel.org/stable/c/7340ca9f782be6fbe3f64a134dc112772764f766" }, { "url": "https://git.kernel.org/stable/c/bd7106a6004f1077a365ca7f5a99c7a708e20714" }, { "url": "https://git.kernel.org/stable/c/6bb5a62bfd624039b05157745c234068508393a9" }, { "url": "https://git.kernel.org/stable/c/f64f08b9e6fb305a25dd75329e06ae342b9ce336" }, { "url": "https://git.kernel.org/stable/c/5b924632d84a60bc0c7fe6e9bbbce99d03908957" }, { "url": "https://git.kernel.org/stable/c/821f9a18210f6b9fd6792471714c799607b25db4" }, { "url": "https://git.kernel.org/stable/c/f67376d801499f4fa0838c18c1efcad8840e550d" } ], "title": "RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed", "x_generator": { "engine": "bippy-1.2.0" } } } }