{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38173", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.991Z", "datePublished": "2025-07-03T08:36:10.969Z", "dateUpdated": "2026-08-05T12:00:04.161Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:00:04.161Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: marvell/cesa - Handle zero-length skcipher requests\n\nDo not access random memory for zero-length skcipher requests.\nJust return 0." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The only trigger is a local `AF_ALG` socket (`algif_aead` with `authenc(...,cbc(aes))`) submitting an AAD-only request, or another in-kernel skcipher caller; the network consumers of `cbc(aes)` (IPsec ESP) explicitly reject `elen <= 0`, so no remote peer can drive `cryptlen == 0`.\nAC:L - The attacker directly and fully controls `req->cryptlen` by choosing the sendmsg payload length equal to the assoclen; the condition is deterministic with no race, memory-layout, or timing dependency.\nPR:L - Any unprivileged local user can open an `AF_ALG` socket and bind an `authenc(hmac(sha1),cbc(aes))` transform — no capabilities, no root, and no namespace tricks are required.\nUI:N - The attacker performs the entire sequence (socket/bind/sendmsg/recvmsg) on their own; no victim action or cooperation is involved.\nS:U - The faulty memory access and the resulting crash/leak are entirely within the kernel's own security authority on the same host; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The driver reads memory it never validated for a zero-length request (\"Do not access random memory\"), and on the non-TDMA path returns stale CESA SRAM contents — leftover IV/crypto state from a previous, potentially different-security-context operation — straight back into the caller's user-visible IV buffer.\nI:H - The unvalidated zero-length request is still programmed into a DMA-capable crypto engine with a zero-length descriptor and `nents == 0` scatterlists, so the out-of-contract memory access is not read-only and the resulting corrupted state is written back into caller buffers; the higher value is taken given the ambiguity of the \"random memory\" access direction.\nA:H - On the common TDMA-equipped CESA parts, `dma_map_sg()` with `nents == 0` returns 0 and trips `WARN_ON_ONCE()` in `__dma_map_sg_attrs()`, producing a kernel splat that becomes a full panic under `panic_on_warn`, and the zero-length descriptor handed to the engine leaves the hardware in an undefined state." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/crypto/marvell/cesa/cipher.c" ], "versions": [ { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "32d3e8049a8b60f18c5c39f5931bfb1130ac11c9", "status": "affected", "versionType": "git" }, { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "c064ae2881d839709bd72d484d5f2af157f46024", "status": "affected", "versionType": "git" }, { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "e1cc69da619588b1488689fe3535a0ba75a2b0e7", "status": "affected", "versionType": "git" }, { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "78ea1ff6cb413a03ff6f7af4e28e24b4461a0965", "status": "affected", "versionType": "git" }, { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "5e9666ac8b94c978690f937d59170c5237bd2c45", "status": "affected", "versionType": "git" }, { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "7894694b5d5b2ecfd7fb081d6f60b9e169ab4d13", "status": "affected", "versionType": "git" }, { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "c9610dda42bd382a96f97e68825cb5f66cd9e1dc", "status": "affected", "versionType": "git" }, { "version": "f63601fd616ab370774fa00ea10bcaaa9e48e84c", "lessThan": "8a4e047c6cc07676f637608a9dd675349b5de0a7", "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/crypto/marvell/cesa/cipher.c" ], "versions": [ { "version": "4.2", "status": "affected" }, { "version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.295", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.239", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.186", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.142", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.94", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.34", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.3", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "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": "4.2", "versionEndExcluding": "5.4.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.10.239" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.15.186" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.1.142" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.6.94" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.12.34" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.15.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/32d3e8049a8b60f18c5c39f5931bfb1130ac11c9" }, { "url": "https://git.kernel.org/stable/c/c064ae2881d839709bd72d484d5f2af157f46024" }, { "url": "https://git.kernel.org/stable/c/e1cc69da619588b1488689fe3535a0ba75a2b0e7" }, { "url": "https://git.kernel.org/stable/c/78ea1ff6cb413a03ff6f7af4e28e24b4461a0965" }, { "url": "https://git.kernel.org/stable/c/5e9666ac8b94c978690f937d59170c5237bd2c45" }, { "url": "https://git.kernel.org/stable/c/7894694b5d5b2ecfd7fb081d6f60b9e169ab4d13" }, { "url": "https://git.kernel.org/stable/c/c9610dda42bd382a96f97e68825cb5f66cd9e1dc" }, { "url": "https://git.kernel.org/stable/c/8a4e047c6cc07676f637608a9dd675349b5de0a7" } ], "title": "crypto: marvell/cesa - Handle zero-length skcipher requests", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:34:59.620Z" } } ] } }