{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26712", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.159Z", "datePublished": "2024-04-03T14:55:14.149Z", "dateUpdated": "2024-08-02T00:14:12.618Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:21:18.578Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/kasan: Fix addr error caused by page alignment\n\nIn kasan_init_region, when k_start is not page aligned, at the begin of\nfor loop, k_cur = k_start & PAGE_MASK is less than k_start, and then\n`va = block + k_cur - k_start` is less than block, the addr va is invalid,\nbecause the memory address space from va to block is not alloced by\nmemblock_alloc, which will not be reserved by memblock_reserve later, it\nwill be used by other places.\n\nAs a result, memory overwriting occurs.\n\nfor example:\nint __init __weak kasan_init_region(void *start, size_t size)\n{\n[...]\n\t/* if say block(dcd97000) k_start(feef7400) k_end(feeff3fe) */\n\tblock = memblock_alloc(k_end - k_start, PAGE_SIZE);\n\t[...]\n\tfor (k_cur = k_start & PAGE_MASK; k_cur < k_end; k_cur += PAGE_SIZE) {\n\t\t/* at the begin of for loop\n\t\t * block(dcd97000) va(dcd96c00) k_cur(feef7000) k_start(feef7400)\n\t\t * va(dcd96c00) is less than block(dcd97000), va is invalid\n\t\t */\n\t\tvoid *va = block + k_cur - k_start;\n\t\t[...]\n\t}\n[...]\n}\n\nTherefore, page alignment is performed on k_start before\nmemblock_alloc() to ensure the validity of the VA address." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/mm/kasan/init_32.c" ], "versions": [ { "version": "663c0c9496a6", "lessThan": "230e89b5ad0a", "status": "affected", "versionType": "git" }, { "version": "663c0c9496a6", "lessThan": "2738e0aa2fb2", "status": "affected", "versionType": "git" }, { "version": "663c0c9496a6", "lessThan": "0c09912dd838", "status": "affected", "versionType": "git" }, { "version": "663c0c9496a6", "lessThan": "0516c06b19dc", "status": "affected", "versionType": "git" }, { "version": "663c0c9496a6", "lessThan": "70ef2ba1f428", "status": "affected", "versionType": "git" }, { "version": "663c0c9496a6", "lessThan": "4a7aee96200a", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/powerpc/mm/kasan/init_32.c" ], "versions": [ { "version": "5.4", "status": "affected" }, { "version": "0", "lessThan": "5.4", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.79", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.18", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.6", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/230e89b5ad0a33f530a2a976b3e5e4385cb27882" }, { "url": "https://git.kernel.org/stable/c/2738e0aa2fb24a7ab9c878d912dc2b239738c6c6" }, { "url": "https://git.kernel.org/stable/c/0c09912dd8387e228afcc5e34ac5d79b1e3a1058" }, { "url": "https://git.kernel.org/stable/c/0516c06b19dc64807c10e01bb99b552bdf2d7dbe" }, { "url": "https://git.kernel.org/stable/c/70ef2ba1f4286b2b73675aeb424b590c92d57b25" }, { "url": "https://git.kernel.org/stable/c/4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" } ], "title": "powerpc/kasan: Fix addr error caused by page alignment", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-26712", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-04-04T15:22:01.316380Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:49:12.279Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:12.618Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/230e89b5ad0a33f530a2a976b3e5e4385cb27882", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/2738e0aa2fb24a7ab9c878d912dc2b239738c6c6", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/0c09912dd8387e228afcc5e34ac5d79b1e3a1058", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/0516c06b19dc64807c10e01bb99b552bdf2d7dbe", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/70ef2ba1f4286b2b73675aeb424b590c92d57b25", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4a7aee96200ad281a5cc4cf5c7a2e2a49d2b97b0", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": [ "x_transferred" ] } ] } ] }, "dataVersion": "5.1" }