255 lines
13 KiB
JSON
255 lines
13 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-2024-53106",
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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": "2024-11-19T17:17:24.992Z",
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"datePublished": "2024-12-02T13:44:39.117Z",
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"dateUpdated": "2026-08-05T11:43:44.445Z"
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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": "2026-08-05T11:43:44.445Z"
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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\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."
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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:L/A:H",
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"baseScore": 7.3,
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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 - 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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"security/integrity/ima/ima_template_lib.c"
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],
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"versions": [
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{
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"version": "9fab303a2cb3d323ca3a32a8b4ab60b451141901",
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"lessThan": "e01aae58e818503f2ffcd34c6f7dc6f90af1057e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9fab303a2cb3d323ca3a32a8b4ab60b451141901",
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"lessThan": "8a84765c62cc0469864e2faee43aae253ad16082",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9fab303a2cb3d323ca3a32a8b4ab60b451141901",
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"lessThan": "1ecf0df5205cfb0907eb7984b8671257965a5232",
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"status": "affected",
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"lessThan": "923168a0631bc42fffd55087b337b1b6c54dcff5",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"security/integrity/ima/ima_template_lib.c"
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],
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"versions": [
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{
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"version": "5.19",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.19",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.119",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.63",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.11.10",
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"lessThanOrEqual": "6.11.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.19",
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"versionEndExcluding": "6.1.119"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.19",
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.19",
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"versionEndExcluding": "6.11.10"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.19",
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"versionEndExcluding": "6.12"
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e01aae58e818503f2ffcd34c6f7dc6f90af1057e"
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},
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{
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"url": "https://git.kernel.org/stable/c/8a84765c62cc0469864e2faee43aae253ad16082"
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},
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{
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"url": "https://git.kernel.org/stable/c/1ecf0df5205cfb0907eb7984b8671257965a5232"
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},
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{
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"url": "https://git.kernel.org/stable/c/923168a0631bc42fffd55087b337b1b6c54dcff5"
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}
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],
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"title": "ima: fix buffer overrun in ima_eventdigest_init_common",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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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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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-53106",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-10-01T20:10:54.266565Z"
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-787",
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"description": "CWE-787 Out-of-bounds Write"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-10-01T20:17:11.900Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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}
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],
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"dateUpdated": "2025-11-03T22:29:18.493Z"
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}
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} |