{"dataType": "CVE_RECORD", "dataVersion": "5.1", "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": "2025-04-16T14:11:54.916Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-04-16T14:11:54.916Z"}, "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."}], "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-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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-7c5fe7eed585"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "70C1AA27-E71C-467A-AB28-979034C2B6CA", "versionEndExcluding": "6.12.23", "versionStartIncluding": "6.8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E7E864B0-8C00-4679-BA55-659B4C9C3AD3", "versionEndExcluding": "6.13.11", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FADAE5D8-4808-442C-B218-77B2CE8780A0", "versionEndExcluding": "6.14.2", "versionStartIncluding": "6.14", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: exfat: corrige la corrupci\u00f3n de pila aleatoria despu\u00e9s de get_block Cuando se llama a get_block con un buffer_head asignado en la pila, como do_mpage_readpage, puede ocurrir una corrupci\u00f3n de pila debido a buffer_head UAF en la siguiente situaci\u00f3n de condici\u00f3n de ejecuci\u00f3n. mpage_read_folio &lt;&gt; do_mpage_readpage exfat_get_block bh_read __bh_read get_bh(bh) submit_bh wait_on_buffer ... end_buffer_read_sync __end_buffer_read_notouch unlock_buffer &lt;&gt; ... ... ... ... &lt;&gt; . . another_function &lt;&gt; put_bh(bh) atomic_dec(bh-&gt;b_count) * Corrupci\u00f3n de pila aqu\u00ed * Este parche devuelve -EAGAIN si un folio no tiene b\u00faferes cuando se necesita llamar a bh_read. De esta manera, quien lo llama puede recurrir a funciones como block_read_full_folio(), crear un buffer_head en el folio y luego volver a llamar a get_block. No llamemos a bh_read() con buffer_head en la pila."}], "id": "CVE-2025-22036", "lastModified": "2025-04-29T18:58:37.880", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-04-16T15:15:56.217", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1bb7ff4204b6d4927e982cd256286c09ed4fd8ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f7447286363dc1e410bf30b87d75168f3519f9cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f807a6bf2005740fa26b4f59c4a003dc966b9afd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: exfat: fix random stack corruption after get_block", "id": "2360231", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2360231"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nexfat: fix random stack corruption after get_block\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<CPU 0> <CPU 1>\nmpage_read_folio\n<<bh on stack>>\ndo_mpage_readpage\nexfat_get_block\nbh_read\n__bh_read\nget_bh(bh)\nsubmit_bh\nwait_on_buffer\n...\nend_buffer_read_sync\n__end_buffer_read_notouch\nunlock_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>>\nput_bh(bh)\natomic_dec(bh->b_count)\n* stack corruption here *\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.\nLet's do not call bh_read() with on-stack buffer_head."], "name": "CVE-2025-22036", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-04-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-22036\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-22036\nhttps://lore.kernel.org/linux-cve-announce/2025041658-CVE-2025-22036-6469@gregkh/T"], "threat_severity": "Moderate"}