CVE-2024-39478

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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"]}]}]}}

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