{"cve":{"cve_id":"CVE-2026-53041","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"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.","published_at":"2026-06-24T16:29:47.501000Z","last_modified_at":null,"cvss_v3_score":7.1,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/a35a1c2b170b5b578b1b3fecb95694796552af9a","https://git.kernel.org/stable/c/2323084c17370304f49c84b354fe7b3edbb264fe","https://git.kernel.org/stable/c/6f702b00b8124c5d3525f19172934544826a114d","https://git.kernel.org/stable/c/d919b905939eda93393e3572900ff70dbad2b47f","https://git.kernel.org/stable/c/46e66fefb83811958127bc9ad736983ec629d82b","https://git.kernel.org/stable/c/2685df8577a38d83b367c8cf52eda9dc286959ff","https://git.kernel.org/stable/c/50033ec1350fe68abdc63b950ced7ae57364b77a","https://git.kernel.org/stable/c/d12f558e6200b3f47dbef9331ed6d115d2410e59"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:49.890169Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"a35a1c2b170b5b578b1b3fecb95694796552af9a","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:a35a1c2b170b5b578b1b3fecb95694796552af9a"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"2323084c17370304f49c84b354fe7b3edbb264fe","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:2323084c17370304f49c84b354fe7b3edbb264fe"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"6f702b00b8124c5d3525f19172934544826a114d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:6f702b00b8124c5d3525f19172934544826a114d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"d919b905939eda93393e3572900ff70dbad2b47f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:d919b905939eda93393e3572900ff70dbad2b47f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"46e66fefb83811958127bc9ad736983ec629d82b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:46e66fefb83811958127bc9ad736983ec629d82b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"2685df8577a38d83b367c8cf52eda9dc286959ff","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:2685df8577a38d83b367c8cf52eda9dc286959ff"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"50033ec1350fe68abdc63b950ced7ae57364b77a","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:50033ec1350fe68abdc63b950ced7ae57364b77a"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"936b8834366ec05f2a6993f73afd8348cac9718e","version_start_inclusive":true,"version_end":"d12f558e6200b3f47dbef9331ed6d115d2410e59","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:936b8834366ec05f2a6993f73afd8348cac9718e:d12f558e6200b3f47dbef9331ed6d115d2410e59"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2.6.28","version_start_inclusive":true,"version_end":"2.6.28","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:2.6.28:2.6.28"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"2.6.28","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:2.6.28"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.258","version_start_inclusive":true,"version_end":"5.10.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10.258:5.10.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.209","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.209:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.175","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.175:6.1.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.141","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.141:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.91","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.91:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.33","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.33:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.10","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.10:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/a35a1c2b170b5b578b1b3fecb95694796552af9a","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/2323084c17370304f49c84b354fe7b3edbb264fe","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/6f702b00b8124c5d3525f19172934544826a114d","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d919b905939eda93393e3572900ff70dbad2b47f","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/46e66fefb83811958127bc9ad736983ec629d82b","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/2685df8577a38d83b367c8cf52eda9dc286959ff","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/50033ec1350fe68abdc63b950ced7ae57364b77a","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d12f558e6200b3f47dbef9331ed6d115d2410e59","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-24T16:29:47.501000Z","label":"CVE published","source":null}]}