{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-39478", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-25T14:23:23.746Z", "datePublished": "2024-07-05T06:55:07.936Z", "dateUpdated": "2026-09-02T12:49:12.242Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-02T12:49:12.242Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: starfive - Do not free stack buffer\n\nRSA text data uses variable length buffer allocated in software stack.\nCalling kfree on it causes undefined behaviour in subsequent operations." } ], "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 vulnerable code is reached through the keyctl() syscall (KEYCTL_PKEY_ENCRYPT/DECRYPT/SIGN/VERIFY) on a locally added asymmetric key, requiring local access to the affected StarFive JH7110 system. No network-facing kernel path drives akcipher RSA operations.\nAC:L - The invalid kfree() executes unconditionally on every RSA operation, on both the success and error paths, so the attacker triggers it deterministically with a single syscall and can repeat it arbitrarily to groom the slab. The attacker also controls the contents of the wrongly-freed memory, since the RSA plaintext is copied into rsa_data.\nPR:L - Any unprivileged user can add an X.509/asymmetric key to their own session keyring and invoke KEYCTL_PKEY_* on it; the only check is KEY_NEED_SEARCH on a key they own, with no capability requirement.\nUI:N - Exploitation is entirely attacker-driven via syscalls in the attacker's own process; no victim action or interaction is needed.\nS:U - The corruption is confined to the kernel's own slab allocator within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - Freeing an interior pointer places a misaligned address on the SLUB freelist, so a subsequent allocation overlaps the still-live request buffer, yielding attacker-readable aliasing of kernel heap memory that can be leveraged for arbitrary kernel memory disclosure.\nI:H - The invalid free writes a freepointer into the middle of a live object and creates overlapping/double-freed allocations whose contents the attacker controls, a classic heap-corruption primitive leading to arbitrary write and privilege escalation.\nA:H - Freelist corruption from freeing a non-slab-aligned pointer reliably causes kernel oops/panic, and the operation can be repeated at will to guarantee a crash." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/crypto/starfive/jh7110-rsa.c" ], "versions": [ { "version": "445a4aaf5842073e4130b1d6dbe3785284d9615f", "lessThan": "bfd861dadd3a45de257b3d328bf49b64a6f9c5f1", "status": "affected", "versionType": "git" }, { "version": "445a4aaf5842073e4130b1d6dbe3785284d9615f", "lessThan": "5944de192663f272033501dcd322b008fca72006", "status": "affected", "versionType": "git" }, { "version": "445a4aaf5842073e4130b1d6dbe3785284d9615f", "lessThan": "d7f01649f4eaf1878472d3d3f480ae1e50d98f6c", "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/starfive/jh7110-rsa.c" ], "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "lessThan": "6.5", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.156", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.5", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "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": "6.5", "versionEndExcluding": "6.6.156" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.9.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5", "versionEndExcluding": "6.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/bfd861dadd3a45de257b3d328bf49b64a6f9c5f1" }, { "url": "https://git.kernel.org/stable/c/5944de192663f272033501dcd322b008fca72006" }, { "url": "https://git.kernel.org/stable/c/d7f01649f4eaf1878472d3d3f480ae1e50d98f6c" } ], "title": "crypto: starfive - Do not free stack buffer", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-07-08T14:13:27.969943Z", "id": "CVE-2024-39478", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-08T14:13:38.169Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:26:16.166Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/5944de192663f272033501dcd322b008fca72006", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/d7f01649f4eaf1878472d3d3f480ae1e50d98f6c", "tags": [ "x_transferred" ] } ] } ] } }