{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54239", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.509Z", "datePublished": "2025-12-30T12:11:28.378Z", "dateUpdated": "2025-12-30T12:11:28.378Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-30T12:11:28.378Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Check for uptr overflow\n\nsyzkaller found that setting up a map with a user VA that wraps past zero\ncan trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0\ndue to invalid arguments.\n\nPrevent creating a pages with a uptr and size that would math overflow.\n\n WARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390\n Modules linked in:\n CPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n RIP: 0010:pfn_reader_user_pin+0x2e6/0x390\n Code: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff <0f> 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00\n RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72\n RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002\n RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e\n R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60\n R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000\n FS: 00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0\n PKRU: 55555554\n Call Trace:\n <TASK>\n pfn_reader_next+0x14a/0x7b0\n ? interval_tree_double_span_iter_update+0x11a/0x140\n pfn_reader_first+0x140/0x1b0\n iopt_pages_rw_slow+0x71/0x280\n ? __this_cpu_preempt_check+0x20/0x30\n iopt_pages_rw_access+0x2b2/0x5b0\n iommufd_access_rw+0x19f/0x2f0\n iommufd_test+0xd11/0x16f0\n ? write_comp_data+0x2f/0x90\n iommufd_fops_ioctl+0x206/0x330\n __x64_sys_ioctl+0x10e/0x160\n ? __pfx_iommufd_fops_ioctl+0x10/0x10\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iommu/iommufd/pages.c"], "versions": [{"version": "8d160cd4d5066f864ec0f2c981470e55ac03ac27", "lessThan": "800963e7eb001ada8cf2418f159fb649694467f1", "status": "affected", "versionType": "git"}, {"version": "8d160cd4d5066f864ec0f2c981470e55ac03ac27", "lessThan": "e4395701330fc4aee530905039516fe770b81417", "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/iommu/iommufd/pages.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.11", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "6.2", "versionEndExcluding": "6.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/800963e7eb001ada8cf2418f159fb649694467f1"}, {"url": "https://git.kernel.org/stable/c/e4395701330fc4aee530905039516fe770b81417"}], "title": "iommufd: Check for uptr overflow", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Check for uptr overflow\n\nsyzkaller found that setting up a map with a user VA that wraps past zero\ncan trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0\ndue to invalid arguments.\n\nPrevent creating a pages with a uptr and size that would math overflow.\n\n WARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390\n Modules linked in:\n CPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n RIP: 0010:pfn_reader_user_pin+0x2e6/0x390\n Code: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff <0f> 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00\n RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72\n RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002\n RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e\n R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60\n R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000\n FS: 00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0\n PKRU: 55555554\n Call Trace:\n <TASK>\n pfn_reader_next+0x14a/0x7b0\n ? interval_tree_double_span_iter_update+0x11a/0x140\n pfn_reader_first+0x140/0x1b0\n iopt_pages_rw_slow+0x71/0x280\n ? __this_cpu_preempt_check+0x20/0x30\n iopt_pages_rw_access+0x2b2/0x5b0\n iommufd_access_rw+0x19f/0x2f0\n iommufd_test+0xd11/0x16f0\n ? write_comp_data+0x2f/0x90\n iommufd_fops_ioctl+0x206/0x330\n __x64_sys_ioctl+0x10e/0x160\n ? __pfx_iommufd_fops_ioctl+0x10/0x10\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc"}], "id": "CVE-2023-54239", "lastModified": "2025-12-31T20:42:43.210", "metrics": {}, "published": "2025-12-30T13:16:12.417", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/800963e7eb001ada8cf2418f159fb649694467f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e4395701330fc4aee530905039516fe770b81417"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: iommufd: Check for uptr overflow", "id": "2426062", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2426062"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\niommufd: Check for uptr overflow\nsyzkaller found that setting up a map with a user VA that wraps past zero\ncan trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0\ndue to invalid arguments.\nPrevent creating a pages with a uptr and size that would math overflow.\nWARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390\nModules linked in:\nCPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\nRIP: 0010:pfn_reader_user_pin+0x2e6/0x390\nCode: b1 11 e9 25 fe ff ff e8 28 e4 0f ff 31 ff 48 89 de e8 2e e6 0f ff 48 85 db 74 0a e8 14 e4 0f ff e9 4d ff ff ff e8 0a e4 0f ff <0f> 0b bb f2 ff ff ff e9 3c ff ff ff e8 f9 e3 0f ff ba 01 00 00 00\nRSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72\nRDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002\nRBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e\nR10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60\nR13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000\nFS: 00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0\nPKRU: 55555554\nCall Trace:\n<TASK>\npfn_reader_next+0x14a/0x7b0\n? interval_tree_double_span_iter_update+0x11a/0x140\npfn_reader_first+0x140/0x1b0\niopt_pages_rw_slow+0x71/0x280\n? __this_cpu_preempt_check+0x20/0x30\niopt_pages_rw_access+0x2b2/0x5b0\niommufd_access_rw+0x19f/0x2f0\niommufd_test+0xd11/0x16f0\n? write_comp_data+0x2f/0x90\niommufd_fops_ioctl+0x206/0x330\n__x64_sys_ioctl+0x10e/0x160\n? __pfx_iommufd_fops_ioctl+0x10/0x10\ndo_syscall_64+0x3b/0x90\nentry_SYSCALL_64_after_hwframe+0x72/0xdc"], "name": "CVE-2023-54239", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54239\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54239\nhttps://lore.kernel.org/linux-cve-announce/2025123033-CVE-2023-54239-07d2@gregkh/T"], "threat_severity": "Moderate"}

{}