CVE-2023-54239 (GCVE-0-2023-54239)
Vulnerability from cvelistv5
Published
2025-12-30 12:11
Modified
2025-12-30 12:11
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/iommu/iommufd/pages.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "800963e7eb001ada8cf2418f159fb649694467f1",
"status": "affected",
"version": "8d160cd4d5066f864ec0f2c981470e55ac03ac27",
"versionType": "git"
},
{
"lessThan": "e4395701330fc4aee530905039516fe770b81417",
"status": "affected",
"version": "8d160cd4d5066f864ec0f2c981470e55ac03ac27",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/iommu/iommufd/pages.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"lessThan": "6.2",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.2.*",
"status": "unaffected",
"version": "6.2.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.2.11",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.3",
"versionStartIncluding": "6.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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 \u003c0f\u003e 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 \u003cTASK\u003e\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"
}
],
"providerMetadata": {
"dateUpdated": "2025-12-30T12:11:28.378Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-54239",
"datePublished": "2025-12-30T12:11:28.378Z",
"dateReserved": "2025-12-30T12:06:44.509Z",
"dateUpdated": "2025-12-30T12:11:28.378Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2023-54239\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:12.417\",\"lastModified\":\"2025-12-30T13:16:12.417\",\"vulnStatus\":\"Received\",\"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 \u003c0f\u003e 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 \u003cTASK\u003e\\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\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/800963e7eb001ada8cf2418f159fb649694467f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4395701330fc4aee530905039516fe770b81417\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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