{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52687", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-07T14:49:46.888Z", "datePublished": "2024-05-17T14:24:48.665Z", "dateUpdated": "2026-08-05T09:11:01.883Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:01.883Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: safexcel - Add error handling for dma_map_sg() calls\n\nMacro dma_map_sg() may return 0 on error. This patch enables\nchecks in case of the macro failure and ensures unmapping of\npreviously mapped buffers with dma_unmap_sg().\n\nFound by Linux Verification Center (linuxtesting.org) with static\nanalysis tool SVACE." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "scenarios": [ { "lang": "en", "value": "AV:N - The Inside Secure EIP97/EIP197 lookaside engine on Marvell Armada and MediaTek MT7986 networking appliances accelerates IPsec AEAD algorithms (gcm(aes), authenc(hmac(sha*),cbc(aes))) at cra_priority 300, so inbound ESP hits esp_input→crypto_aead_decrypt→safexcel_send_req→dma_map_sg over the network before authentication completes.\nAC:L - A remote or local attacker can induce dma_map_sg() failure via memory/IOVA/swiotlb exhaustion (large multi-frag ESP floods or concurrent AF_ALG requests); once mapping fails the driver deterministically programs the engine with stale/unmapped SG DMA addresses with no race to win.\nPR:N - Crafted ESP packets to an existing IPsec SA exercise the vulnerable path with no privileges on the target; AEAD decrypt (including dma_map_sg) runs as part of packet processing before authenticity is established.\nUI:N - Exploitation requires only attacker-sent ESP (or AF_ALG) crypto requests; no victim user action such as mounting a filesystem or opening a file is needed.\nS:U - Impact is host-kernel memory corruption/DoS under the same kernel security authority; this is not a guest-to-host escape or intentional IOMMU isolation bypass across separate authorities.\nC:H - On dma-direct partial map failure, successfully mapped SG entries are unmapped but dma_address is left stale, so the engine DMAs from recycled pages (use-after-unmap); with separate src/dst, a failed src map plus successful dst map can encrypt unintended physical memory into attacker-readable output under a known key.\nI:H - The same stale/unmapped DMA addresses are used for DMA_FROM_DEVICE/BIDIRECTIONAL result writes, so the crypto engine writes into memory that may have been reused by other kernel subsystems, enabling arbitrary corruption and control-flow hijack primitives.\nA:H - Programming the EIP97/EIP197 with unmapped or DMA_MAPPING_ERROR addresses causes bus/IOMMU faults, driver failures, and kernel oops/panic, fully denying service on affected appliances." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/crypto/inside-secure/safexcel_cipher.c" ], "versions": [ { "version": "49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1", "lessThan": "4c0ac81a172a69a7733290915276672787e904ec", "status": "affected", "versionType": "git" }, { "version": "49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1", "lessThan": "8084b788c2fb1260f7d44c032d5124680b20d2b2", "status": "affected", "versionType": "git" }, { "version": "49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1", "lessThan": "fc0b785802b856566df3ac943e38a072557001c4", "status": "affected", "versionType": "git" }, { "version": "49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1", "lessThan": "87e02063d07708cac5bfe9fd3a6a242898758ac8", "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/inside-secure/safexcel_cipher.c" ], "versions": [ { "version": "6.1", "status": "affected" }, { "version": "0", "lessThan": "6.1", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.75", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.14", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.2", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "6.1", "versionEndExcluding": "6.1.75" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.6.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.7.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4c0ac81a172a69a7733290915276672787e904ec" }, { "url": "https://git.kernel.org/stable/c/8084b788c2fb1260f7d44c032d5124680b20d2b2" }, { "url": "https://git.kernel.org/stable/c/fc0b785802b856566df3ac943e38a072557001c4" }, { "url": "https://git.kernel.org/stable/c/87e02063d07708cac5bfe9fd3a6a242898758ac8" } ], "title": "crypto: safexcel - Add error handling for dma_map_sg() calls", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-05-31T18:46:13.483061Z", "id": "CVE-2023-52687", "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": "2024-11-06T16:44:03.755Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:34.555Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/4c0ac81a172a69a7733290915276672787e904ec", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/8084b788c2fb1260f7d44c032d5124680b20d2b2", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/fc0b785802b856566df3ac943e38a072557001c4", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/87e02063d07708cac5bfe9fd3a6a242898758ac8", "tags": [ "x_transferred" ] } ] } ] } }