CVE-2023-53327 (GCVE-0-2023-53327)
Vulnerability from cvelistv5
Published
2025-09-16 16:12
Modified
2025-09-16 16:12
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommufd/selftest: Catch overflow of uptr and length
syzkaller hits a WARN_ON when trying to have a uptr close to UINTPTR_MAX:
WARNING: CPU: 1 PID: 393 at drivers/iommu/iommufd/selftest.c:403 iommufd_test+0xb19/0x16f0
Modules linked in:
CPU: 1 PID: 393 Comm: repro Not tainted 6.2.0-c9c3395d5e3d #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:iommufd_test+0xb19/0x16f0
Code: 94 c4 31 ff 44 89 e6 e8 a5 54 17 ff 45 84 e4 0f 85 bb 0b 00 00 41 be fb ff ff ff e8 31 53 17 ff e9 a0 f7 ff ff e8 27 53 17 ff <0f> 0b 41 be 8
RSP: 0018:ffffc90000eabdc0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8214c487
RDX: 0000000000000000 RSI: ffff88800f5c8000 RDI: 0000000000000002
RBP: ffffc90000eabe48 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 00000000cd2b0000
R13: 00000000cd2af000 R14: 0000000000000000 R15: ffffc90000eabe68
FS: 00007f94d76d5740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000043 CR3: 0000000006880006 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
<TASK>
? write_comp_data+0x2f/0x90
iommufd_fops_ioctl+0x1ef/0x310
__x64_sys_ioctl+0x10e/0x160
? __pfx_iommufd_fops_ioctl+0x10/0x10
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
Check that the user memory range doesn't overflow.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/iommu/iommufd/selftest.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "adac6508c235a092b91ed9c0110ecf140e9e9441",
"status": "affected",
"version": "f4b20bb34c83dceade5470288f48f94ce3598ada",
"versionType": "git"
},
{
"lessThan": "3fb3505636d033bbf7a0851dac63d01732c51d62",
"status": "affected",
"version": "f4b20bb34c83dceade5470288f48f94ce3598ada",
"versionType": "git"
},
{
"lessThan": "fd8c1a4aee973e87d890a5861e106625a33b2c4e",
"status": "affected",
"version": "f4b20bb34c83dceade5470288f48f94ce3598ada",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/iommu/iommufd/selftest.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": "6.2.15",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.3.*",
"status": "unaffected",
"version": "6.3.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.2.15",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.3.2",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.4",
"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/selftest: Catch overflow of uptr and length\n\nsyzkaller hits a WARN_ON when trying to have a uptr close to UINTPTR_MAX:\n\n WARNING: CPU: 1 PID: 393 at drivers/iommu/iommufd/selftest.c:403 iommufd_test+0xb19/0x16f0\n Modules linked in:\n CPU: 1 PID: 393 Comm: repro Not tainted 6.2.0-c9c3395d5e3d #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:iommufd_test+0xb19/0x16f0\n Code: 94 c4 31 ff 44 89 e6 e8 a5 54 17 ff 45 84 e4 0f 85 bb 0b 00 00 41 be fb ff ff ff e8 31 53 17 ff e9 a0 f7 ff ff e8 27 53 17 ff \u003c0f\u003e 0b 41 be 8\n RSP: 0018:ffffc90000eabdc0 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8214c487\n RDX: 0000000000000000 RSI: ffff88800f5c8000 RDI: 0000000000000002\n RBP: ffffc90000eabe48 R08: 0000000000000000 R09: 0000000000000001\n R10: 0000000000000001 R11: 0000000000000000 R12: 00000000cd2b0000\n R13: 00000000cd2af000 R14: 0000000000000000 R15: ffffc90000eabe68\n FS: 00007f94d76d5740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000020000043 CR3: 0000000006880006 CR4: 0000000000770ee0\n PKRU: 55555554\n Call Trace:\n \u003cTASK\u003e\n ? write_comp_data+0x2f/0x90\n iommufd_fops_ioctl+0x1ef/0x310\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\n\nCheck that the user memory range doesn\u0027t overflow."
}
],
"providerMetadata": {
"dateUpdated": "2025-09-16T16:12:03.417Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/adac6508c235a092b91ed9c0110ecf140e9e9441"
},
{
"url": "https://git.kernel.org/stable/c/3fb3505636d033bbf7a0851dac63d01732c51d62"
},
{
"url": "https://git.kernel.org/stable/c/fd8c1a4aee973e87d890a5861e106625a33b2c4e"
}
],
"title": "iommufd/selftest: Catch overflow of uptr and length",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-53327",
"datePublished": "2025-09-16T16:12:03.417Z",
"dateReserved": "2025-09-16T16:08:59.564Z",
"dateUpdated": "2025-09-16T16:12:03.417Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2023-53327\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-16T17:15:38.910\",\"lastModified\":\"2025-09-17T14:18:55.093\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommufd/selftest: Catch overflow of uptr and length\\n\\nsyzkaller hits a WARN_ON when trying to have a uptr close to UINTPTR_MAX:\\n\\n WARNING: CPU: 1 PID: 393 at drivers/iommu/iommufd/selftest.c:403 iommufd_test+0xb19/0x16f0\\n Modules linked in:\\n CPU: 1 PID: 393 Comm: repro Not tainted 6.2.0-c9c3395d5e3d #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:iommufd_test+0xb19/0x16f0\\n Code: 94 c4 31 ff 44 89 e6 e8 a5 54 17 ff 45 84 e4 0f 85 bb 0b 00 00 41 be fb ff ff ff e8 31 53 17 ff e9 a0 f7 ff ff e8 27 53 17 ff \u003c0f\u003e 0b 41 be 8\\n RSP: 0018:ffffc90000eabdc0 EFLAGS: 00010246\\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8214c487\\n RDX: 0000000000000000 RSI: ffff88800f5c8000 RDI: 0000000000000002\\n RBP: ffffc90000eabe48 R08: 0000000000000000 R09: 0000000000000001\\n R10: 0000000000000001 R11: 0000000000000000 R12: 00000000cd2b0000\\n R13: 00000000cd2af000 R14: 0000000000000000 R15: ffffc90000eabe68\\n FS: 00007f94d76d5740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 0000000020000043 CR3: 0000000006880006 CR4: 0000000000770ee0\\n PKRU: 55555554\\n Call Trace:\\n \u003cTASK\u003e\\n ? write_comp_data+0x2f/0x90\\n iommufd_fops_ioctl+0x1ef/0x310\\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\\n\\nCheck that the user memory range doesn\u0027t overflow.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3fb3505636d033bbf7a0851dac63d01732c51d62\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/adac6508c235a092b91ed9c0110ecf140e9e9441\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fd8c1a4aee973e87d890a5861e106625a33b2c4e\",\"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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