{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49393", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.562Z", "datePublished": "2025-02-26T02:11:24.730Z", "dateUpdated": "2025-05-04T08:36:43.602Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:36:43.602Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl\n\nThis is another instance of incorrect use of list iterator and\nchecking it for NULL.\n\nThe list iterator value 'map' will *always* be set and non-NULL\nby list_for_each_entry(), so it is incorrect to assume that the\niterator value will be NULL if the list is empty (in this case, the\ncheck 'if (!map) {' will always be false and never exit as expected).\n\nTo fix the bug, use a new variable 'iter' as the list iterator,\nwhile use the original variable 'map' as a dedicated pointer to\npoint to the found element.\n\nWithout this patch, Kernel crashes with below trace:\n\nUnable to handle kernel access to user memory outside uaccess routines\n at virtual address 0000ffff7fb03750\n...\nCall trace:\n fastrpc_map_create+0x70/0x290 [fastrpc]\n fastrpc_req_mem_map+0xf0/0x2dc [fastrpc]\n fastrpc_device_ioctl+0x138/0xc60 [fastrpc]\n __arm64_sys_ioctl+0xa8/0xec\n invoke_syscall+0x48/0x114\n el0_svc_common.constprop.0+0xd4/0xfc\n do_el0_svc+0x28/0x90\n el0_svc+0x3c/0x130\n el0t_64_sync_handler+0xa4/0x130\n el0t_64_sync+0x18c/0x190\nCode: 14000016 f94000a5 eb05029f 54000260 (b94018a6)\n---[ end trace 0000000000000000 ]---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/misc/fastrpc.c"], "versions": [{"version": "5c1b97c7d7b736e6439af4f43a65837bc72f56c1", "lessThan": "2d12905aad462383f4e7a5fdb024d2b7ae2d10cf", "status": "affected", "versionType": "git"}, {"version": "5c1b97c7d7b736e6439af4f43a65837bc72f56c1", "lessThan": "c5c07c5958cf0c9af6e76813e6de15d42ee49822", "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/misc/fastrpc.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "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": "5.18", "versionEndExcluding": "5.18.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "5.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2d12905aad462383f4e7a5fdb024d2b7ae2d10cf"}, {"url": "https://git.kernel.org/stable/c/c5c07c5958cf0c9af6e76813e6de15d42ee49822"}], "title": "misc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl\n\nThis is another instance of incorrect use of list iterator and\nchecking it for NULL.\n\nThe list iterator value 'map' will *always* be set and non-NULL\nby list_for_each_entry(), so it is incorrect to assume that the\niterator value will be NULL if the list is empty (in this case, the\ncheck 'if (!map) {' will always be false and never exit as expected).\n\nTo fix the bug, use a new variable 'iter' as the list iterator,\nwhile use the original variable 'map' as a dedicated pointer to\npoint to the found element.\n\nWithout this patch, Kernel crashes with below trace:\n\nUnable to handle kernel access to user memory outside uaccess routines\n at virtual address 0000ffff7fb03750\n...\nCall trace:\n fastrpc_map_create+0x70/0x290 [fastrpc]\n fastrpc_req_mem_map+0xf0/0x2dc [fastrpc]\n fastrpc_device_ioctl+0x138/0xc60 [fastrpc]\n __arm64_sys_ioctl+0xa8/0xec\n invoke_syscall+0x48/0x114\n el0_svc_common.constprop.0+0xd4/0xfc\n do_el0_svc+0x28/0x90\n el0_svc+0x3c/0x130\n el0t_64_sync_handler+0xa4/0x130\n el0t_64_sync+0x18c/0x190\nCode: 14000016 f94000a5 eb05029f 54000260 (b94018a6)\n---[ end trace 0000000000000000 ]---"}], "id": "CVE-2022-49393", "lastModified": "2025-02-26T07:01:15.890", "metrics": {}, "published": "2025-02-26T07:01:15.890", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2d12905aad462383f4e7a5fdb024d2b7ae2d10cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c5c07c5958cf0c9af6e76813e6de15d42ee49822"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: misc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl", "id": "2347793", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347793"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmisc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl\nThis is another instance of incorrect use of list iterator and\nchecking it for NULL.\nThe list iterator value 'map' will *always* be set and non-NULL\nby list_for_each_entry(), so it is incorrect to assume that the\niterator value will be NULL if the list is empty (in this case, the\ncheck 'if (!map) {' will always be false and never exit as expected).\nTo fix the bug, use a new variable 'iter' as the list iterator,\nwhile use the original variable 'map' as a dedicated pointer to\npoint to the found element.\nWithout this patch, Kernel crashes with below trace:\nUnable to handle kernel access to user memory outside uaccess routines\nat virtual address 0000ffff7fb03750\n...\nCall trace:\nfastrpc_map_create+0x70/0x290 [fastrpc]\nfastrpc_req_mem_map+0xf0/0x2dc [fastrpc]\nfastrpc_device_ioctl+0x138/0xc60 [fastrpc]\n__arm64_sys_ioctl+0xa8/0xec\ninvoke_syscall+0x48/0x114\nel0_svc_common.constprop.0+0xd4/0xfc\ndo_el0_svc+0x28/0x90\nel0_svc+0x3c/0x130\nel0t_64_sync_handler+0xa4/0x130\nel0t_64_sync+0x18c/0x190\nCode: 14000016 f94000a5 eb05029f 54000260 (b94018a6)\n---[ end trace 0000000000000000 ]---"], "name": "CVE-2022-49393", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49393\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49393\nhttps://lore.kernel.org/linux-cve-announce/2025022649-CVE-2022-49393-dd81@gregkh/T"], "threat_severity": "Moderate"}