394 lines
18 KiB
JSON
394 lines
18 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-38079",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-04-16T04:51:23.980Z",
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"datePublished": "2025-06-18T09:33:53.251Z",
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"dateUpdated": "2026-10-15T01:06:29.165Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:59:18.103Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: algif_hash - fix double free in hash_accept\n\nIf accept(2) is called on socket type algif_hash with\nMSG_MORE flag set and crypto_ahash_import fails,\nsk2 is freed. However, it is also freed in af_alg_release,\nleading to slab-use-after-free error."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerability is reached purely through local syscalls on an AF_ALG socket (socket/bind/sendmsg/accept); there is no network exposure.\nAC:L - The attacker fully controls the algorithm, the MSG_MORE state, and the accept() call, and can retry at will; once the import-failure condition is met the double free is deterministic with no race the attacker cannot control.\nPR:L - alg_create() enforces no capability check, so any unprivileged local user can open the AF_ALG hash socket and reach hash_accept; it does require a local account, so not None.\nUI:N - The entire sequence is driven by the attacker's own process with no victim action required.\nS:U - The corruption stays within the kernel's own security authority; there is no cross-boundary (VM/IOMMU) escape.\nC:H - A slab-use-after-free on a struct sock lets the attacker reclaim and read attacker-influenced freed-object contents, enabling disclosure of kernel memory.\nI:H - The double free/UAF provides a heap-grooming primitive over a freed struct sock that can be leveraged into arbitrary write and control-flow hijack.\nA:H - The double free reliably corrupts the slab allocator and crashes the kernel (oops/panic), taking down the system."
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}
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]
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}
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],
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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"url": "https://git.kernel.org/stable/c/b2df03ed4052e97126267e8c13ad4204ea6ba9b6"
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}
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],
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"title": "crypto: algif_hash - fix double free in hash_accept",
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"x_generator": {
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
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"dateUpdated": "2025-11-03T17:33:48.696Z"
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}
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"dateUpdated": "2026-10-15T01:06:29.165Z"
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},
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
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"options": [
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{
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"version": "2.0.3",
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} |