242 lines
13 KiB
JSON
242 lines
13 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2025-22036",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-12-29T08:45:45.809Z",
|
|
"datePublished": "2025-04-16T14:11:54.916Z",
|
|
"dateUpdated": "2026-08-05T11:56:08.974Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T11:56:08.974Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix random stack corruption after get_block\n\nWhen get_block is called with a buffer_head allocated on the stack, such\nas do_mpage_readpage, stack corruption due to buffer_head UAF may occur in\nthe following race condition situation.\n\n <CPU 0> <CPU 1>\nmpage_read_folio\n <<bh on stack>>\n do_mpage_readpage\n exfat_get_block\n bh_read\n __bh_read\n\t get_bh(bh)\n submit_bh\n wait_on_buffer\n ...\n end_buffer_read_sync\n __end_buffer_read_notouch\n unlock_buffer\n <<keep going>>\n ...\n ...\n ...\n ...\n<<bh is not valid out of mpage_read_folio>>\n .\n .\nanother_function\n <<variable A on stack>>\n put_bh(bh)\n atomic_dec(bh->b_count)\n * stack corruption here *\n\nThis patch returns -EAGAIN if a folio does not have buffers when bh_read\nneeds to be called. By doing this, the caller can fallback to functions\nlike block_read_full_folio(), create a buffer_head in the folio, and then\ncall get_block again.\n\nLet's do not call bh_read() with on-stack buffer_head."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The vulnerable path is reached through ordinary filesystem syscalls (read/mmap on a file on a mounted exFAT volume), requiring local access to the system. No network protocol handling is involved.\nAC:L - The attacker fully drives the triggering side — creating an unaligned valid_size, dropping page cache, and re-reading in an unbounded loop — and additionally controls which syscall frame occupies the stale stack slot when the deferred atomic_dec lands, so the corruption target is attacker-influenced rather than beyond their control.\nPR:L - A plain unprivileged local account with read/write access to an already-mounted exFAT volume (the default on Android SD cards, udisks2 automounts, and embedded media devices) suffices; no capability or root is required.\nUI:N - The attacker performs every step themselves — create the file, extend it, invalidate the cache, read it back — with no action by any other user; the exFAT mount is a pre-existing environmental condition, not a victim-supplied one.\nS:U - The stack corruption occurs within the kernel's own memory and does not cross into another security authority such as a hypervisor or IOMMU domain.\nC:H - This is a use-after-scope on the kernel stack; decrementing an attacker-chosen stack word (a length, index, or pointer in a subsequent syscall frame) yields out-of-bounds read primitives, and the mis-computed folio offset additionally reads on-disk block content into the wrong page-cache location.\nI:H - The deferred put_bh performs an unconstrained write (atomic decrement) into live kernel stack data of the attacker's task, corrupting saved registers, locals, or return addresses — a memory-corruption primitive usable for control-flow or data-only privilege escalation.\nA:H - Random kernel stack corruption reliably produces oopses and panics, and the attacker can repeat the trigger indefinitely to force a crash."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"fs/exfat/inode.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "11a347fb6cef62ce47e84b97c45f2b2497c7593b",
|
|
"lessThan": "49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "11a347fb6cef62ce47e84b97c45f2b2497c7593b",
|
|
"lessThan": "f7447286363dc1e410bf30b87d75168f3519f9cc",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "11a347fb6cef62ce47e84b97c45f2b2497c7593b",
|
|
"lessThan": "f807a6bf2005740fa26b4f59c4a003dc966b9afd",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "11a347fb6cef62ce47e84b97c45f2b2497c7593b",
|
|
"lessThan": "1bb7ff4204b6d4927e982cd256286c09ed4fd8ca",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"fs/exfat/inode.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.8",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.8",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.23",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.13.11",
|
|
"lessThanOrEqual": "6.13.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.14.2",
|
|
"lessThanOrEqual": "6.14.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.15",
|
|
"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": "6.8",
|
|
"versionEndExcluding": "6.12.23"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.8",
|
|
"versionEndExcluding": "6.13.11"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.8",
|
|
"versionEndExcluding": "6.14.2"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.8",
|
|
"versionEndExcluding": "6.15"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f7447286363dc1e410bf30b87d75168f3519f9cc"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f807a6bf2005740fa26b4f59c4a003dc966b9afd"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/1bb7ff4204b6d4927e982cd256286c09ed4fd8ca"
|
|
}
|
|
],
|
|
"title": "exfat: fix random stack corruption after get_block",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"type": "CWE",
|
|
"cweId": "CWE-416",
|
|
"lang": "en",
|
|
"description": "CWE-416 Use After Free"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"scope": "UNCHANGED",
|
|
"version": "3.1",
|
|
"baseScore": 7,
|
|
"attackVector": "LOCAL",
|
|
"baseSeverity": "HIGH",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"integrityImpact": "HIGH",
|
|
"userInteraction": "NONE",
|
|
"attackComplexity": "HIGH",
|
|
"availabilityImpact": "HIGH",
|
|
"privilegesRequired": "LOW",
|
|
"confidentialityImpact": "HIGH"
|
|
}
|
|
},
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2025-10-01T17:04:29.794256Z",
|
|
"id": "CVE-2025-22036",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2025-10-01T17:04:32.804Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |