{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26870", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.184Z", "datePublished": "2024-04-17T10:27:30.756Z", "dateUpdated": "2024-08-02T00:21:04.235Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:24:12.327Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102\n\nA call to listxattr() with a buffer size = 0 returns the actual\nsize of the buffer needed for a subsequent call. When size > 0,\nnfs4_listxattr() does not return an error because either\ngeneric_listxattr() or nfs4_listxattr_nfs4_label() consumes\nexactly all the bytes then size is 0 when calling\nnfs4_listxattr_nfs4_user() which then triggers the following\nkernel BUG:\n\n [ 99.403778] kernel BUG at mm/usercopy.c:102!\n [ 99.404063] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP\n [ 99.408463] CPU: 0 PID: 3310 Comm: python3 Not tainted 6.6.0-61.fc40.aarch64 #1\n [ 99.415827] Call trace:\n [ 99.415985] usercopy_abort+0x70/0xa0\n [ 99.416227] __check_heap_object+0x134/0x158\n [ 99.416505] check_heap_object+0x150/0x188\n [ 99.416696] __check_object_size.part.0+0x78/0x168\n [ 99.416886] __check_object_size+0x28/0x40\n [ 99.417078] listxattr+0x8c/0x120\n [ 99.417252] path_listxattr+0x78/0xe0\n [ 99.417476] __arm64_sys_listxattr+0x28/0x40\n [ 99.417723] invoke_syscall+0x78/0x100\n [ 99.417929] el0_svc_common.constprop.0+0x48/0xf0\n [ 99.418186] do_el0_svc+0x24/0x38\n [ 99.418376] el0_svc+0x3c/0x110\n [ 99.418554] el0t_64_sync_handler+0x120/0x130\n [ 99.418788] el0t_64_sync+0x194/0x198\n [ 99.418994] Code: aa0003e3 d000a3e0 91310000 97f49bdb (d4210000)\n\nIssue is reproduced when generic_listxattr() returns 'system.nfs4_acl',\nthus calling lisxattr() with size = 16 will trigger the bug.\n\nAdd check on nfs4_listxattr() to return ERANGE error when it is\ncalled with size > 0 and the return value is greater than size." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/nfs/nfs4proc.c" ], "versions": [ { "version": "012a211abd5d", "lessThan": "4403438eaca6", "status": "affected", "versionType": "git" }, { "version": "012a211abd5d", "lessThan": "9d52865ff282", "status": "affected", "versionType": "git" }, { "version": "012a211abd5d", "lessThan": "06e828b3f1b2", "status": "affected", "versionType": "git" }, { "version": "012a211abd5d", "lessThan": "79cdcc765969", "status": "affected", "versionType": "git" }, { "version": "012a211abd5d", "lessThan": "80365c9f9601", "status": "affected", "versionType": "git" }, { "version": "012a211abd5d", "lessThan": "23bfecb4d852", "status": "affected", "versionType": "git" }, { "version": "012a211abd5d", "lessThan": "251a658bbfce", "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/nfs/nfs4proc.c" ], "versions": [ { "version": "5.9", "status": "affected" }, { "version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4403438eaca6e91f02d272211c4d6b045092396b" }, { "url": "https://git.kernel.org/stable/c/9d52865ff28245fc2134da9f99baff603a24407a" }, { "url": "https://git.kernel.org/stable/c/06e828b3f1b206de08ef520fc46a40b22e1869cb" }, { "url": "https://git.kernel.org/stable/c/79cdcc765969d23f4e3d6ea115660c3333498768" }, { "url": "https://git.kernel.org/stable/c/80365c9f96015bbf048fdd6c8705d3f8770132bf" }, { "url": "https://git.kernel.org/stable/c/23bfecb4d852751d5e403557dd500bb563313baf" }, { "url": "https://git.kernel.org/stable/c/251a658bbfceafb4d58c76b77682c8bf7bcfad65" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" } ], "title": "NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-26870", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-28T19:56:13.503124Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:49:37.605Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:21:04.235Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/4403438eaca6e91f02d272211c4d6b045092396b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/9d52865ff28245fc2134da9f99baff603a24407a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/06e828b3f1b206de08ef520fc46a40b22e1869cb", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/79cdcc765969d23f4e3d6ea115660c3333498768", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/80365c9f96015bbf048fdd6c8705d3f8770132bf", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/23bfecb4d852751d5e403557dd500bb563313baf", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/251a658bbfceafb4d58c76b77682c8bf7bcfad65", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": [ "x_transferred" ] } ] } ] }, "dataVersion": "5.1" }