CVE-2026-53041 - Vulnerability Details

Vendors	Products
Linux	Linux Kernel

Link	Providers
https://git.kernel.org/stable/c/2323084c17370304f49c84b354fe7b3edbb264fe
https://git.kernel.org/stable/c/2685df8577a38d83b367c8cf52eda9dc286959ff
https://git.kernel.org/stable/c/46e66fefb83811958127bc9ad736983ec629d82b
https://git.kernel.org/stable/c/50033ec1350fe68abdc63b950ced7ae57364b77a
https://git.kernel.org/stable/c/6f702b00b8124c5d3525f19172934544826a114d
https://git.kernel.org/stable/c/a35a1c2b170b5b578b1b3fecb95694796552af9a
https://git.kernel.org/stable/c/d12f558e6200b3f47dbef9331ed6d115d2410e59
https://git.kernel.org/stable/c/d919b905939eda93393e3572900ff70dbad2b47f

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix listxattr handling when the buffer is full [BUG] If an OCFS2 inode has both inline and block-based xattrs, listxattr() can return a size larger than the caller's buffer when the inline names consume that buffer exactly. kernel BUG at mm/usercopy.c:102! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI RIP: 0010:usercopy_abort+0xb7/0xd0 mm/usercopy.c:102 Call Trace: __check_heap_object+0xe3/0x120 mm/slub.c:8243 check_heap_object mm/usercopy.c:196 [inline] __check_object_size mm/usercopy.c:250 [inline] __check_object_size+0x5c5/0x780 mm/usercopy.c:215 check_object_size include/linux/ucopysize.h:22 [inline] check_copy_size include/linux/ucopysize.h:59 [inline] copy_to_user include/linux/uaccess.h:219 [inline] listxattr+0xb0/0x170 fs/xattr.c:926 filename_listxattr fs/xattr.c:958 [inline] path_listxattrat+0x137/0x320 fs/xattr.c:988 __do_sys_listxattr fs/xattr.c:1001 [inline] __se_sys_listxattr fs/xattr.c:998 [inline] __x64_sys_listxattr+0x7f/0xd0 fs/xattr.c:998 ... [CAUSE] Commit 936b8834366e ("ocfs2: Refactor xattr list and remove ocfs2_xattr_handler().") replaced the old per-handler list accounting with ocfs2_xattr_list_entry(), but it kept using size == 0 to detect probe mode. That assumption stops being true once ocfs2_listxattr() finishes the inline-xattr pass. If the inline names fill the caller buffer exactly, the block-xattr pass runs with a non-NULL buffer and a remaining size of zero. ocfs2_xattr_list_entry() then skips the bounds check, keeps counting block names, and returns a positive size larger than the supplied buffer. [FIX] Detect probe mode by testing whether the destination buffer pointer is NULL instead of whether the remaining size is zero. That restores the pre-refactor behavior and matches the OCFS2 getxattr helpers. Once the remaining buffer reaches zero while more names are left, the block-xattr pass now returns -ERANGE instead of reporting a size larger than the allocated list buffer.
Title		ocfs2: fix listxattr handling when the buffer is full
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/2323084c17370304f49c84b354fe7b3edbb264fe https://git.kernel.org/stable/c/2685df8577a38d83b367c8cf52eda9dc286959ff https://git.kernel.org/stable/c/46e66fefb83811958127bc9ad736983ec629d82b https://git.kernel.org/stable/c/50033ec1350fe68abdc63b950ced7ae57364b77a https://git.kernel.org/stable/c/6f702b00b8124c5d3525f19172934544826a114d https://git.kernel.org/stable/c/a35a1c2b170b5b578b1b3fecb95694796552af9a https://git.kernel.org/stable/c/d12f558e6200b3f47dbef9331ed6d115d2410e59 https://git.kernel.org/stable/c/d919b905939eda93393e3572900ff70dbad2b47f

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53041", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.380Z", "datePublished": "2026-06-24T16:29:47.501Z", "dateUpdated": "2026-06-24T16:29:47.501Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:47.501Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix listxattr handling when the buffer is full\n\n[BUG]\nIf an OCFS2 inode has both inline and block-based xattrs, listxattr()\ncan return a size larger than the caller's buffer when the inline names\nconsume that buffer exactly.\n\nkernel BUG at mm/usercopy.c:102!\nOops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\nRIP: 0010:usercopy_abort+0xb7/0xd0 mm/usercopy.c:102\nCall Trace:\n __check_heap_object+0xe3/0x120 mm/slub.c:8243\n check_heap_object mm/usercopy.c:196 [inline]\n __check_object_size mm/usercopy.c:250 [inline]\n __check_object_size+0x5c5/0x780 mm/usercopy.c:215\n check_object_size include/linux/ucopysize.h:22 [inline]\n check_copy_size include/linux/ucopysize.h:59 [inline]\n copy_to_user include/linux/uaccess.h:219 [inline]\n listxattr+0xb0/0x170 fs/xattr.c:926\n filename_listxattr fs/xattr.c:958 [inline]\n path_listxattrat+0x137/0x320 fs/xattr.c:988\n __do_sys_listxattr fs/xattr.c:1001 [inline]\n __se_sys_listxattr fs/xattr.c:998 [inline]\n __x64_sys_listxattr+0x7f/0xd0 fs/xattr.c:998\n ...\n\n[CAUSE]\nCommit 936b8834366e (\"ocfs2: Refactor xattr list and remove\nocfs2_xattr_handler().\") replaced the old per-handler list accounting\nwith ocfs2_xattr_list_entry(), but it kept using size == 0 to detect\nprobe mode.\n\nThat assumption stops being true once ocfs2_listxattr() finishes the\ninline-xattr pass. If the inline names fill the caller buffer exactly,\nthe block-xattr pass runs with a non-NULL buffer and a remaining size of\nzero. ocfs2_xattr_list_entry() then skips the bounds check, keeps\ncounting block names, and returns a positive size larger than the\nsupplied buffer.\n\n[FIX]\nDetect probe mode by testing whether the destination buffer pointer is\nNULL instead of whether the remaining size is zero.\n\nThat restores the pre-refactor behavior and matches the OCFS2 getxattr\nhelpers. Once the remaining buffer reaches zero while more names are\nleft, the block-xattr pass now returns -ERANGE instead of reporting a\nsize larger than the allocated list buffer."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/xattr.c"], "versions": [{"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "a35a1c2b170b5b578b1b3fecb95694796552af9a", "status": "affected", "versionType": "git"}, {"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "2323084c17370304f49c84b354fe7b3edbb264fe", "status": "affected", "versionType": "git"}, {"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "6f702b00b8124c5d3525f19172934544826a114d", "status": "affected", "versionType": "git"}, {"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "d919b905939eda93393e3572900ff70dbad2b47f", "status": "affected", "versionType": "git"}, {"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "46e66fefb83811958127bc9ad736983ec629d82b", "status": "affected", "versionType": "git"}, {"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "2685df8577a38d83b367c8cf52eda9dc286959ff", "status": "affected", "versionType": "git"}, {"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "50033ec1350fe68abdc63b950ced7ae57364b77a", "status": "affected", "versionType": "git"}, {"version": "936b8834366ec05f2a6993f73afd8348cac9718e", "lessThan": "d12f558e6200b3f47dbef9331ed6d115d2410e59", "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/ocfs2/xattr.c"], "versions": [{"version": "2.6.28", "status": "affected"}, {"version": "0", "lessThan": "2.6.28", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "2.6.28", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a35a1c2b170b5b578b1b3fecb95694796552af9a"}, {"url": "https://git.kernel.org/stable/c/2323084c17370304f49c84b354fe7b3edbb264fe"}, {"url": "https://git.kernel.org/stable/c/6f702b00b8124c5d3525f19172934544826a114d"}, {"url": "https://git.kernel.org/stable/c/d919b905939eda93393e3572900ff70dbad2b47f"}, {"url": "https://git.kernel.org/stable/c/46e66fefb83811958127bc9ad736983ec629d82b"}, {"url": "https://git.kernel.org/stable/c/2685df8577a38d83b367c8cf52eda9dc286959ff"}, {"url": "https://git.kernel.org/stable/c/50033ec1350fe68abdc63b950ced7ae57364b77a"}, {"url": "https://git.kernel.org/stable/c/d12f558e6200b3f47dbef9331ed6d115d2410e59"}], "title": "ocfs2: fix listxattr handling when the buffer is full", "x_generator": {"engine": "bippy-1.2.0"}}}}

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