{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-38222", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38222", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-07-04T13:37:37.879Z", "updatedAt": "2026-10-15T01:06:52.124Z", "importedAt": "2026-10-24T01:57:34.152Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "ext4: inline: fix len overflow in ext4_prepare_inline_data", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: inline: fix len overflow in ext4_prepare_inline_data\n\nWhen running the following code on an ext4 filesystem with inline_data\nfeature enabled, it will lead to the bug below.\n\n fd = open(\"file1\", O_RDWR | O_CREAT | O_TRUNC, 0666);\n ftruncate(fd, 30);\n pwrite(fd, \"a\", 1, (1UL << 40) + 5UL);\n\nThat happens because write_begin will succeed as when\next4_generic_write_inline_data calls ext4_prepare_inline_data, pos + len\nwill be truncated, leading to ext4_prepare_inline_data parameter to be 6\ninstead of 0x10000000006.\n\nThen, later when write_end is called, we hit:\n\n BUG_ON(pos + len > EXT4_I(inode)->i_inline_size);\n\nat ext4_write_inline_data.\n\nFix it by using a loff_t type for the len parameter in\next4_prepare_inline_data instead of an unsigned int.\n\n[ 44.545164] ------------[ cut here ]------------\n[ 44.545530] kernel BUG at fs/ext4/inline.c:240!\n[ 44.545834] Oops: invalid opcode: 0000 [#1] SMP NOPTI\n[ 44.546172] CPU: 3 UID: 0 PID: 343 Comm: test Not tainted 6.15.0-rc2-00003-g9080916f4863 #45 PREEMPT(full) 112853fcebfdb93254270a7959841d2c6aa2c8bb\n[ 44.546523] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 44.546523] RIP: 0010:ext4_write_inline_data+0xfe/0x100\n[ 44.546523] Code: 3c 0e 48 83 c7 48 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 e4 fa 43 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 0f 0b <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 20 49\n[ 44.546523] RSP: 0018:ffffb342008b79a8 EFLAGS: 00010216\n[ 44.546523] RAX: 0000000000000001 RBX: ffff9329c579c000 RCX: 0000010000000006\n[ 44.546523] RDX: 000000000000003c RSI: ffffb342008b79f0 RDI: ffff9329c158e738\n[ 44.546523] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000\n[ 44.546523] R10: 00007ffffffff000 R11: ffffffff9bd0d910 R12: 0000006210000000\n[ 44.546523] R13: fffffc7e4015e700 R14: 0000010000000005 R15: ffff9329c158e738\n[ 44.546523] FS: 00007f4299934740(0000) GS:ffff932a60179000(0000) knlGS:0000000000000000\n[ 44.546523] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 44.546523] CR2: 00007f4299a1ec90 CR3: 0000000002886002 CR4: 0000000000770eb0\n[ 44.546523] PKRU: 55555554\n[ 44.546523] Call Trace:\n[ 44.546523] \n[ 44.546523] ext4_write_inline_data_end+0x126/0x2d0\n[ 44.546523] generic_perform_write+0x17e/0x270\n[ 44.546523] ext4_buffered_write_iter+0xc8/0x170\n[ 44.546523] vfs_write+0x2be/0x3e0\n[ 44.546523] __x64_sys_pwrite64+0x6d/0xc0\n[ 44.546523] do_syscall_64+0x6a/0xf0\n[ 44.546523] ? __wake_up+0x89/0xb0\n[ 44.546523] ? xas_find+0x72/0x1c0\n[ 44.546523] ? next_uptodate_folio+0x317/0x330\n[ 44.546523] ? set_pte_range+0x1a6/0x270\n[ 44.546523] ? filemap_map_pages+0x6ee/0x840\n[ 44.546523] ? ext4_setattr+0x2fa/0x750\n[ 44.546523] ? do_pte_missing+0x128/0xf70\n[ 44.546523] ? security_inode_post_setattr+0x3e/0xd0\n[ 44.546523] ? ___pte_offset_map+0x19/0x100\n[ 44.546523] ? handle_mm_fault+0x721/0xa10\n[ 44.546523] ? do_user_addr_fault+0x197/0x730\n[ 44.546523] ? do_syscall_64+0x76/0xf0\n[ 44.546523] ? arch_exit_to_user_mode_prepare+0x1e/0x60\n[ 44.546523] ? irqentry_exit_to_user_mode+0x79/0x90\n[ 44.546523] entry_SYSCALL_64_after_hwframe+0x55/0x5d\n[ 44.546523] RIP: 0033:0x7f42999c6687\n[ 44.546523] Code: 48 89 fa 4c 89 df e8 58 b3 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff\n[ 44.546523] RSP: 002b:00007ffeae4a7930 EFLAGS: 00000202 ORIG_RAX: 0000000000000012\n[ 44.546523] RAX: ffffffffffffffda RBX: 00007f4299934740 RCX: 00007f42999c6687\n[ 44.546523] RDX: 0000000000000001 RSI: 000055ea6149200f RDI: 0000000000000003\n[ 44.546523] RBP: 00007ffeae4a79a0 R08: 0000000000000000 R09: 0000000000000000\n[ 44.546523] R10: 0000010000000005 R11: 0000000000000202 R12: 0000\n---truncated---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "d3dfc60efd145df5324b99a244b0b05505cde29b" }, { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "717414a8c083c376d4a8940a1230fe0c6ed4ee00" }, { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "9d1d1c5bf4fc1af76be154d3afb2acdbd89ec7d8" }, { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "cf5f319a2d8ab8238f8cf3a19463b9bff6420934" }, { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "26e09d18599da0adc543eabd300080daaeda6869" }, { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "5766da2237e539f259aa0e5f3639ae37b44ca458" }, { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "e80ee0263d88d77f2fd1927f915003a7066cbb50" }, { "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e", "status": "affected", "versionType": "git", "lessThan": "227cb4ca5a6502164f850d22aec3104d7888b270" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.8", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.8" }, { "version": "5.4.295", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.239", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.186", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.142", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.95", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.35", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.15.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.15.*" }, { "version": "6.16", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }