{ "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-2025-68261", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-68261", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-12-16T14:45:03.252Z", "updatedAt": "2026-10-15T01:09:42.357Z", "importedAt": "2026-10-24T01:57:44.935Z", "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: add i_data_sem protection in ext4_destroy_inline_data_nolock()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: add i_data_sem protection in ext4_destroy_inline_data_nolock()\n\nFix a race between inline data destruction and block mapping.\n\nThe function ext4_destroy_inline_data_nolock() changes the inode data\nlayout by clearing EXT4_INODE_INLINE_DATA and setting EXT4_INODE_EXTENTS.\nAt the same time, another thread may execute ext4_map_blocks(), which\ntests EXT4_INODE_EXTENTS to decide whether to call ext4_ext_map_blocks()\nor ext4_ind_map_blocks().\n\nWithout i_data_sem protection, ext4_ind_map_blocks() may receive inode\nwith EXT4_INODE_EXTENTS flag and triggering assert.\n\nkernel BUG at fs/ext4/indirect.c:546!\nEXT4-fs (loop2): unmounting filesystem.\ninvalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014\nRIP: 0010:ext4_ind_map_blocks.cold+0x2b/0x5a fs/ext4/indirect.c:546\n\nCall Trace:\n \n ext4_map_blocks+0xb9b/0x16f0 fs/ext4/inode.c:681\n _ext4_get_block+0x242/0x590 fs/ext4/inode.c:822\n ext4_block_write_begin+0x48b/0x12c0 fs/ext4/inode.c:1124\n ext4_write_begin+0x598/0xef0 fs/ext4/inode.c:1255\n ext4_da_write_begin+0x21e/0x9c0 fs/ext4/inode.c:3000\n generic_perform_write+0x259/0x5d0 mm/filemap.c:3846\n ext4_buffered_write_iter+0x15b/0x470 fs/ext4/file.c:285\n ext4_file_write_iter+0x8e0/0x17f0 fs/ext4/file.c:679\n call_write_iter include/linux/fs.h:2271 [inline]\n do_iter_readv_writev+0x212/0x3c0 fs/read_write.c:735\n do_iter_write+0x186/0x710 fs/read_write.c:861\n vfs_iter_write+0x70/0xa0 fs/read_write.c:902\n iter_file_splice_write+0x73b/0xc90 fs/splice.c:685\n do_splice_from fs/splice.c:763 [inline]\n direct_splice_actor+0x10f/0x170 fs/splice.c:950\n splice_direct_to_actor+0x33a/0xa10 fs/splice.c:896\n do_splice_direct+0x1a9/0x280 fs/splice.c:1002\n do_sendfile+0xb13/0x12c0 fs/read_write.c:1255\n __do_sys_sendfile64 fs/read_write.c:1323 [inline]\n __se_sys_sendfile64 fs/read_write.c:1309 [inline]\n __x64_sys_sendfile64+0x1cf/0x210 fs/read_write.c:1309\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x35/0x80 arch/x86/entry/common.c:81\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "b322bac9f01d03190b5abc52be5d9dd9f22a2b41" }, { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "61e03dc3794ebf77a706b85e5a36c9c6d70be6de" }, { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "5b266cf6851ce72b11b067fe02adf5a8687104ad" }, { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "144c48da33a01d92995aeccd8208eb47d2a8e659" }, { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "22a76b0861ae61a299c8e126c1aca8c4fda820fd" }, { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "ba8aeff294ac7ff6dfe293663d815c54c5ee218c" }, { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "5cad18e527ba8a9ca5463cc170073eeb5a4826f4" }, { "version": "c755e251357a0cee0679081f08c3f4ba797a8009", "status": "affected", "versionType": "git", "lessThan": "0cd8feea8777f8d9b9a862b89c688b049a5c8475" }, { "version": "3e96c3fdcfccb321a9e1623f78cc71b44593e965", "status": "affected", "versionType": "git" }, { "version": "5781ac24bbd998ebb1ff30143bb06244d847af48", "status": "affected", "versionType": "git" }, { "version": "9b06cce3ca4d60d442c39bfa7c058b71b1cee6c2", "status": "affected", "versionType": "git" }, { "version": "da1e40237f8f3516581b534c484c236a79ccfd14", "status": "affected", "versionType": "git" }, { "version": "7cf6b709b6412afd1d93b2c4b37163c3602e3b95", "status": "affected", "versionType": "git" }, { "version": "3.16.44", "status": "affected", "versionType": "semver", "lessThan": "3.17" }, { "version": "3.18.107", "status": "affected", "versionType": "semver", "lessThan": "3.19" }, { "version": "4.4.129", "status": "affected", "versionType": "semver", "lessThan": "4.5" }, { "version": "4.9.14", "status": "affected", "versionType": "semver", "lessThan": "4.10" }, { "version": "4.10.2", "status": "affected", "versionType": "semver", "lessThan": "4.11" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.11", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.11" }, { "version": "5.10.248", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.198", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.160", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.120", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.62", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.17.12", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.17.*" }, { "version": "6.18.1", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }