{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-53106", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:24.992Z", "datePublished": "2024-12-02T13:44:39.117Z", "dateUpdated": "2026-08-05T11:43:44.445Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:43:44.445Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: fix buffer overrun in ima_eventdigest_init_common\n\nFunction ima_eventdigest_init() calls ima_eventdigest_init_common()\nwith HASH_ALGO__LAST which is then used to access the array\nhash_digest_size[] leading to buffer overrun. Have a conditional\nstatement to handle this." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "baseScore": 7.3, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Triggering requires local file operations — an unprivileged process holding a file open for write while another mmap()s it PROT_EXEC — to generate an IMA integrity violation record. There is no network-facing path to `ima_rdwr_violation_check()`.\nAC:L - The attacker fully controls both processes and both files involved, so violation records can be generated deterministically and repeatedly with a few syscalls. Nothing about the trigger depends on timing, memory layout, or victim state the attacker cannot influence.\nPR:L - The built-in default measurement policy applies `MEASURE func=MMAP_CHECK mask=MAY_EXEC` to all users with no uid gate, so any unprivileged local account can drive `ima_add_violation()` on a file it owns. No capability, namespace trick, or root access is needed.\nUI:N - The attacker's own two processes perform every step (open for write, mmap PROT_EXEC); no other user or administrator has to act. Exploitation is entirely self-contained.\nS:U - The out-of-bounds read, the leaked data, and the crash all occur within the kernel's own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The bogus length drives `memcpy()` far past a ~201-byte stack buffer, copying adjacent kernel stack memory into the measurement entry, which `ima_print_digest()` renders in hex to securityfs and which is exported to remote attestation verifiers — an unbounded kernel memory disclosure that can expose stack canaries and KASLR-defeating pointers. The read is not bounded to a few bytes.\nI:L - There is no out-of-bounds write — the kzalloc'd destination is sized to the bogus length — so no arbitrary-write or control-flow primitive exists. The integrity impact is limited to falsifying IMA measurement-log entries and the TPM PCR extend values, corrupting the attestation record.\nA:H - The oversized `memcpy()` from a stack buffer triggers `fortify_panic()` on CONFIG_FORTIFY_SOURCE builds, a VMAP_STACK guard-page fault for large lengths, or a KASAN stack-out-of-bounds report; an out-of-range value additionally causes a `kzalloc` order WARN. Any of these is a kernel crash, and an unprivileged user can trigger it at will." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/integrity/ima/ima_template_lib.c" ], "versions": [ { "version": "9fab303a2cb3d323ca3a32a8b4ab60b451141901", "lessThan": "e01aae58e818503f2ffcd34c6f7dc6f90af1057e", "status": "affected", "versionType": "git" }, { "version": "9fab303a2cb3d323ca3a32a8b4ab60b451141901", "lessThan": "8a84765c62cc0469864e2faee43aae253ad16082", "status": "affected", "versionType": "git" }, { "version": "9fab303a2cb3d323ca3a32a8b4ab60b451141901", "lessThan": "1ecf0df5205cfb0907eb7984b8671257965a5232", "status": "affected", "versionType": "git" }, { "version": "9fab303a2cb3d323ca3a32a8b4ab60b451141901", "lessThan": "923168a0631bc42fffd55087b337b1b6c54dcff5", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/integrity/ima/ima_template_lib.c" ], "versions": [ { "version": "5.19", "status": "affected" }, { "version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.119", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.63", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.10", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "5.19", "versionEndExcluding": "6.1.119" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.6.63" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.11.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e01aae58e818503f2ffcd34c6f7dc6f90af1057e" }, { "url": "https://git.kernel.org/stable/c/8a84765c62cc0469864e2faee43aae253ad16082" }, { "url": "https://git.kernel.org/stable/c/1ecf0df5205cfb0907eb7984b8671257965a5232" }, { "url": "https://git.kernel.org/stable/c/923168a0631bc42fffd55087b337b1b6c54dcff5" } ], "title": "ima: fix buffer overrun in ima_eventdigest_init_common", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-53106", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:10:54.266565Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:17:11.900Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:29:18.493Z" } } ] } }