{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68400", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.389Z", "datePublished": "2026-08-10T12:04:19.952Z", "dateUpdated": "2026-08-10T12:04:19.952Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-10T12:04:19.952Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation\n\nUse the descriptor's `ep_mem_offset` to calculate the start of the endpoint\nmemory access array and to comply with the FF-A spec instead of defaulting\nto `sizeof(struct ffa_mem_region)`.\nThis requires moving `ffa_mem_region_additional_setup()` earlier in the setup\nflow.\nAlso, add sanity checks to ensure the calculated descriptor offsets do not\nexceed `max_fragsize`."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/firmware/arm_ffa/driver.c", "include/linux/arm_ffa.h"], "versions": [{"version": "113580530ee7dc61e668b641d657920734533b9f", "lessThan": "b39b08e6bee812514b449dc874076890e6b871a0", "status": "affected", "versionType": "git"}, {"version": "113580530ee7dc61e668b641d657920734533b9f", "lessThan": "8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66", "status": "affected", "versionType": "git"}, {"version": "113580530ee7dc61e668b641d657920734533b9f", "lessThan": "b4d961351aa84fdf0148783fb1f3a1391b8a0adb", "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/firmware/arm_ffa/driver.c", "include/linux/arm_ffa.h"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc4", "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": "6.7", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.2-rc4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b39b08e6bee812514b449dc874076890e6b871a0"}, {"url": "https://git.kernel.org/stable/c/8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66"}, {"url": "https://git.kernel.org/stable/c/b4d961351aa84fdf0148783fb1f3a1391b8a0adb"}], "title": "firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/firmware/arm_ffa/driver.c", "include/linux/arm_ffa.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b39b08e6bee812514b449dc874076890e6b871a0", "status": "affected", "version": "113580530ee7dc61e668b641d657920734533b9f", "versionType": "git"}, {"lessThan": "8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66", "status": "affected", "version": "113580530ee7dc61e668b641d657920734533b9f", "versionType": "git"}, {"lessThan": "b4d961351aa84fdf0148783fb1f3a1391b8a0adb", "status": "affected", "version": "113580530ee7dc61e668b641d657920734533b9f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/firmware/arm_ffa/driver.c", "include/linux/arm_ffa.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"lessThan": "6.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc4", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation\n\nUse the descriptor's `ep_mem_offset` to calculate the start of the endpoint\nmemory access array and to comply with the FF-A spec instead of defaulting\nto `sizeof(struct ffa_mem_region)`.\nThis requires moving `ffa_mem_region_additional_setup()` earlier in the setup\nflow.\nAlso, add sanity checks to ensure the calculated descriptor offsets do not\nexceed `max_fragsize`."}], "id": "CVE-2026-68400", "lastModified": "2026-08-10T13:20:33.487", "metrics": {}, "published": "2026-08-10T13:20:33.487", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b39b08e6bee812514b449dc874076890e6b871a0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b4d961351aa84fdf0148783fb1f3a1391b8a0adb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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