VULN/vuln-cve
1
0 Fork 0
Code Pull Requests Actions Activity
Files
c1444140e59c61ba154436ea0cd6284d8a97c3f0
vuln-cve/data/2023/53xxx/CVE-2023-53817.json
T

264 lines
14 KiB
JSON
Raw Blame History

{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2023-53817",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-12-08T23:58:35.277Z",
"datePublished": "2025-12-09T00:01:15.411Z",
"dateUpdated": "2026-08-05T09:16:11.527Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-05T09:16:11.527Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()\n\nDuring NVMeTCP Authentication a controller can trigger a kernel\noops by specifying the 8192 bit Diffie Hellman group and passing\na correctly sized, but zeroed Diffie Hellamn value.\nmpi_cmp_ui() was detecting this if the second parameter was 0,\nbut 1 is passed from dh_is_pubkey_valid(). This causes the null\npointer u->d to be dereferenced towards the end of mpi_cmp_ui()"
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 7.5,
"baseSeverity": "HIGH"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable code is reached from NVMe-over-Fabrics (NVMe/TCP) DH-HMAC-CHAP authentication data received from a remote peer — either a malicious/MITM controller sending a Challenge to a host, or a remote initiator sending a Reply to an nvmet-tcp target on TCP/4420. The attacker-controlled bytes travel over the network with no locality requirement.\nAC:L - Triggering is fully deterministic: the attacker simply advertises a non-NULL DH group (e.g. ffdhe8192) and supplies a correctly sized but all-zero DH value, which makes mpi_read_raw_from_sgl() produce an MPI with nlimbs==0 and d==NULL. No race, no memory-layout dependency, and NVMe/TCP in-band authentication is a normal shipped configuration.\nPR:N - On the target side nvmet_auth_reply() computes the DH shared secret from the peer's DH value before the DH-HMAC-CHAP response HMAC is verified, so this is a pre-authentication code path; on the host side an impersonating/MITM controller needs no credentials to send the Challenge.\nUI:N - An nvmet-tcp target listens passively and the attacker drives the whole DH-HMAC-CHAP exchange; no local user action is required to trigger the oops.\nS:U - The NULL dereference crashes the kernel that is processing the authentication message; the impact stays within that kernel's own security authority with no boundary crossing.\nC:N - The fault is a read of address 0 (u->d[0]) that immediately oopses; no attacker-influenced memory is read back or returned to the peer, so no information is disclosed.\nI:N - The bug is a NULL pointer read, not a write or type confusion; nothing is corrupted and there is no primitive for modifying kernel memory or hijacking control flow.\nA:H - Dereferencing the NULL u->d produces a kernel oops in the NVMe auth work handler, killing the connection/worker and panicking the box under panic_on_oops, and it can be re-triggered on every new authentication attempt."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"lib/crypto/mpi/mpi-cmp.c"
],
"versions": [
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "fde791e8a96a64ea7b0ad2440e43586447a209c6",
"status": "affected",
"versionType": "git"
},
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "ae63e84ffda74267bf7277c38415ba38389229a0",
"status": "affected",
"versionType": "git"
},
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "61f5453e9706e99713825594e0c8f9031485fb5f",
"status": "affected",
"versionType": "git"
},
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "0fc7147c694394f8a8cbc19570c6bc918cac0906",
"status": "affected",
"versionType": "git"
},
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "67589d247909043e94d2dd5fb590958e0f99d58d",
"status": "affected",
"versionType": "git"
},
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "d3ad023a39f1127dcfd331c562673355dc078650",
"status": "affected",
"versionType": "git"
},
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "12ac013ad7ff0df066451e825801d805095b3776",
"status": "affected",
"versionType": "git"
},
{
"version": "12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5",
"lessThan": "9e47a758b70167c9301d2b44d2569f86c7796f2d",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"lib/crypto/mpi/mpi-cmp.c"
],
"versions": [
{
"version": "3.7",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.7",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "4.14.326",
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "4.19.295",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.257",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.197",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.133",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.55",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.5.5",
"lessThanOrEqual": "6.5.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6",
"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": "3.7",
"versionEndExcluding": "4.14.326"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.7",
"versionEndExcluding": "4.19.295"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.7",
"versionEndExcluding": "5.4.257"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.7",
"versionEndExcluding": "5.10.197"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.7",
"versionEndExcluding": "5.15.133"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.7",
"versionEndExcluding": "6.1.55"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.7",
"versionEndExcluding": "6.5.5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.7",
"versionEndExcluding": "6.6"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6"
},
{
"url": "https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0"
},
{
"url": "https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f"
},
{
"url": "https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906"
},
{
"url": "https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d"
},
{
"url": "https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650"
},
{
"url": "https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776"
},
{
"url": "https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d"
}
],
"title": "crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
View Git Blame Copy Permalink