CVE-2023-54239 - Vulnerability Details

Vendors	Products
Linux	Linux Kernel

Link	Providers
https://git.kernel.org/stable/c/800963e7eb001ada8cf2418f159fb649694467f1
https://git.kernel.org/stable/c/e4395701330fc4aee530905039516fe770b81417

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: iommufd: Check for uptr overflow syzkaller found that setting up a map with a user VA that wraps past zero can trigger WARN_ONs, particularly from pin_user_pages weirdly returning 0 due to invalid arguments. Prevent creating a pages with a uptr and size that would math overflow. WARNING: CPU: 0 PID: 518 at drivers/iommu/iommufd/pages.c:793 pfn_reader_user_pin+0x2e6/0x390 Modules linked in: CPU: 0 PID: 518 Comm: repro Not tainted 6.3.0-rc2-eeac8ede1755+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:pfn_reader_user_pin+0x2e6/0x390 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 RSP: 0018:ffffc90000f9fa30 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff821e2b72 RDX: 0000000000000000 RSI: ffff888014184680 RDI: 0000000000000002 RBP: ffffc90000f9fa78 R08: 00000000000000ff R09: 0000000079de6f4e R10: ffffc90000f9f790 R11: ffff888014185418 R12: ffffc90000f9fc60 R13: 0000000000000002 R14: ffff888007879800 R15: 0000000000000000 FS: 00007f4227555740(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000043 CR3: 000000000e748005 CR4: 0000000000770ef0 PKRU: 55555554 Call Trace: <TASK> pfn_reader_next+0x14a/0x7b0 ? interval_tree_double_span_iter_update+0x11a/0x140 pfn_reader_first+0x140/0x1b0 iopt_pages_rw_slow+0x71/0x280 ? __this_cpu_preempt_check+0x20/0x30 iopt_pages_rw_access+0x2b2/0x5b0 iommufd_access_rw+0x19f/0x2f0 iommufd_test+0xd11/0x16f0 ? write_comp_data+0x2f/0x90 iommufd_fops_ioctl+0x206/0x330 __x64_sys_ioctl+0x10e/0x160 ? __pfx_iommufd_fops_ioctl+0x10/0x10 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc
Title		iommufd: Check for uptr overflow
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/800963e7eb001ada8cf2418f159fb649694467f1 https://git.kernel.org/stable/c/e4395701330fc4aee530905039516fe770b81417

{"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": "2025-12-30T13:16:12.417", "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": "Received"}

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