{"id":"CVE-2025-38221","aliases":["BELL-CVE-2025-38221","EUVD-2025-20035","GHSA-m2xx-pr2p-6vvw","UBUNTU-CVE-2025-38221"],"status":"published","title":"ext4: fix out of bounds punch offset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds punch offset\n\nPunching a hole with a start offset that exceeds max_end is not\npermitted and will result in a negative length in the\ntruncate_inode_partial_folio() function while truncating the page cache,\npotentially leading to undesirable consequences.\n\nA simple reproducer:\n\n  truncate -s 9895604649994 /mnt/foo\n  xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo\n  xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo\n\n  kernel BUG at include/linux/highmem.h:275!\n  Oops: invalid opcode: 0000 [#1] SMP PTI\n  CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\n  RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\n  RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\n  RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\n  RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\n  RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\n  R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\n  R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\n  FS:  00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\n  knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  Call Trace:\n   \u003cTASK\u003e\n   truncate_inode_partial_folio+0x3dd/0x620\n   truncate_inode_pages_range+0x226/0x720\n   ? bdev_getblk+0x52/0x3e0\n   ? ext4_get_group_desc+0x78/0x150\n   ? crc32c_arch+0xfd/0x180\n   ? __ext4_get_inode_loc+0x18c/0x840\n   ? ext4_inode_csum+0x117/0x160\n   ? jbd2_journal_dirty_metadata+0x61/0x390\n   ? __ext4_handle_dirty_metadata+0xa0/0x2b0\n   ? kmem_cache_free+0x90/0x5a0\n   ? jbd2_journal_stop+0x1d5/0x550\n   ? __ext4_journal_stop+0x49/0x100\n   truncate_pagecache_range+0x50/0x80\n   ext4_truncate_page_cache_block_range+0x57/0x3a0\n   ext4_punch_hole+0x1fe/0x670\n   ext4_fallocate+0x792/0x17d0\n   ? __count_memcg_events+0x175/0x2a0\n   vfs_fallocate+0x121/0x560\n   ksys_fallocate+0x51/0xc0\n   __x64_sys_fallocate+0x24/0x40\n   x64_sys_call+0x18d2/0x4170\n   do_syscall_64+0xa7/0x220\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by filtering out cases where the punching start offset exceeds\nmax_end.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00172,"percentile":0.06648,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2025-07-04T13:37:37Z","modified":"2026-10-28T02:30:59Z","fixes":[{"ecosystem":"Alpaquita:stream","package":"linux-lts","fixed_in":["6.18.35-r1"],"sources":["osv"]},{"ecosystem":"Linux","package":"Kernel","fixed_in":["6.15.4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpaquita:stream","package":"linux-lts","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.12.92-r1"},{"fixed":"6.18.35-r1"}]}]},{"source":"osv","ecosystem":"Linux","package":"Kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.15.4"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"linux-hwe-edge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.0-28.30~16.04.1","4.8.0-30.32~16.04.1","4.8.0-32.34~16.04.1","4.8.0-34.36~16.04.1","4.10.0-14.16~16.04.1","4.10.0-19.21~16.04.1","4.10.0-20.22~16.04.1","4.10.0-21.23~16.04.1","4.10.0-22.24~16.04.1","4.10.0-24.28~16.04.1","4.10.0-26.30~16.04.1","4.11.0-13.19~16.04.1","4.11.0-14.20~16.04.1","4.13.0-16.19~16.04.3","4.13.0-17.20~16.04.1","4.13.0-19.22~16.04.1","4.13.0-21.24~16.04.1","4.13.0-25.29~16.04.2","4.15.0-13.14~16.04.1","4.15.0-15.16~16.04.1","4.15.0-20.21~16.04.1","4.15.0-22.24~16.04.1","4.15.0-23.25~16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-aws-5.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.0-1021.24~18.04.1","5.0.0-1022.25~18.04.1","5.0.0-1023.26~18.04.1","5.0.0-1024.27~18.04.1","5.0.0-1025.28","5.0.0-1027.30"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-aws-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1016.17~18.04.1","5.3.0-1017.18~18.04.1","5.3.0-1019.21~18.04.1","5.3.0-1023.25~18.04.1","5.3.0-1028.30~18.04.1","5.3.0-1030.32~18.04.1","5.3.0-1032.34~18.04.2","5.3.0-1033.35","5.3.0-1034.36","5.3.0-1035.37"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1002.2","4.15.0-1003.3","4.15.0-1004.4","4.15.0-1008.8","4.15.0-1009.9","4.15.0-1012.12","4.15.0-1013.13","4.15.0-1014.14","4.15.0-1018.18","4.15.0-1019.19","4.15.0-1021.21","4.15.0-1022.23","4.15.0-1023.24","4.15.0-1025.26","4.15.0-1028.29","4.15.0-1030.31","4.15.0-1031.32","4.15.0-1032.33","4.15.0-1035.36","4.15.0-1036.38","4.15.0-1037.39","4.18.0-1011.11~18.04.1","4.18.0-1013.13~18.04.1","4.18.0-1014.14~18.04.1","4.18.0-1018.18~18.04.1","4.18.0-1019.19~18.04.1","4.18.0-1020.20~18.04.1","4.18.0-1023.24~18.04.1","4.18.0-1024.25~18.04.1","4.18.0-1025.27~18.04.1","5.0.0-1014.14~18.04.1","5.0.0-1016.17~18.04.1","5.0.0-1018.19~18.04.1","5.0.0-1020.21~18.04.1","5.0.0-1022.23~18.04.1","5.0.0-1023.24~18.04.1","5.0.0-1025.27~18.04.1","5.0.0-1027.29~18.04.1","5.0.0-1028.30~18.04.1","5.0.0-1029.31~18.04.1","5.0.0-1031.33","5.0.0-1032.34","5.0.0-1035.37","5.0.0-1036.38"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-1007.8~18.04.1","5.3.0-1008.9~18.04.1","5.3.0-1009.10~18.04.1","5.3.0-1010.11~18.04.1","5.3.0-1012.13~18.04.1","5.3.0-1013.14~18.04.1","5.3.0-1016.17~18.04.1","5.3.0-1018.19~18.04.1","5.3.0-1019.20~18.04.1","5.3.0-1020.21~18.04.1","5.3.0-1022.23~18.04.1","5.3.0-1028.29~18.04.1","5.3.0-1031.32~18.04.1","5.3.0-1032.33~18.04.1","5.3.0-1034.35~18.04.1","5.3.0-1035.36"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-azure-edge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.18.0-1006.6~18.04.1","4.18.0-1007.7~18.04.1","4.18.0-1008.8~18.04.1","5.0.0-1012.12~18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.15.0-1001.1","4.15.0-1003.3","4.15.0-1005.5","4.15.0-1006.6","4.15.0-1008.8","4.15.0-1009.9","4.15.0-1010.10","4.15.0-1014.14","4.15.0-1015.15","4.15.0-1017.18","4.15.0-1018.19","4.15.0-1019.20","4.15.0-1021.22","4.15.0-1023.24","4.15.0-1024.25","4.15.0-1025.26","4.15.0-1026.27","4.15.0-1027.28","4.15.0-1028.29","4.15.0-1029.31","4.15.0-1030.32","4.15.0-1032.34","4.15.0-1033.35","4.15.0-1034.36","4.15.0-1036.38","4.15.0-1037.39","4.15.0-1040.42","4.15.0-1042.45","4.15.0-1044.70","5.0.0-1020.20~18.04.1","5.0.0-1021.21~18.04.1","5.0.0-1025.26~18.04.1","5.0.0-1026.27~18.04.1","5.0.0-1028.29~18.04.1","5.0.0-1029.30~18.04.1","5.0.0-1031.32","5.0.0-1033.34","5.0.0-1034.35"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"linux-gcp-5.3","ranges":[{"type":"ECOSYSTEM","events":[{"in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fix out of bounds punch offset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds punch offset\n\nPunching a hole with a start offset that exceeds max_end is not\npermitted and will result in a negative length in the\ntruncate_inode_partial_folio() function while truncating the page cache,\npotentially leading to undesirable consequences.\n\nA simple reproducer:\n\n  truncate -s 9895604649994 /mnt/foo\n  xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo\n  xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo\n\n  kernel BUG at include/linux/highmem.h:275!\n  Oops: invalid opcode: 0000 [#1] SMP PTI\n  CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\n  RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\n  RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\n  RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\n  RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\n  RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\n  R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\n  R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\n  FS:  00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\n  knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  Call Trace:\n   \u003cTASK\u003e\n   truncate_inode_partial_folio+0x3dd/0x620\n   truncate_inode_pages_range+0x226/0x720\n   ? bdev_getblk+0x52/0x3e0\n   ? ext4_get_group_desc+0x78/0x150\n   ? crc32c_arch+0xfd/0x180\n   ? __ext4_get_inode_loc+0x18c/0x840\n   ? ext4_inode_csum+0x117/0x160\n   ? jbd2_journal_dirty_metadata+0x61/0x390\n   ? __ext4_handle_dirty_metadata+0xa0/0x2b0\n   ? kmem_cache_free+0x90/0x5a0\n   ? jbd2_journal_stop+0x1d5/0x550\n   ? __ext4_journal_stop+0x49/0x100\n   truncate_pagecache_range+0x50/0x80\n   ext4_truncate_page_cache_block_range+0x57/0x3a0\n   ext4_punch_hole+0x1fe/0x670\n   ext4_fallocate+0x792/0x17d0\n   ? __count_memcg_events+0x175/0x2a0\n   vfs_fallocate+0x121/0x560\n   ksys_fallocate+0x51/0xc0\n   __x64_sys_fallocate+0x24/0x40\n   x64_sys_call+0x18d2/0x4170\n   do_syscall_64+0xa7/0x220\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by filtering out cases where the punching start offset exceeds\nmax_end.","status":"published","published":"2025-07-04T13:37:37.248Z","modified":"2026-05-11T21:23:34.763Z","updated_at":"2026-11-02T14:32:47.08757Z"}],"euvd":[{"id":"EUVD-2025-20035","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds punch offset\n\nPunching a hole with a start offset that exceeds max_end is not\npermitted and will result in a negative length in the\ntruncate_inode_partial_folio() function while truncating the page cache,\npotentially leading to undesirable consequences.\n\nA simple reproducer:\n\n  truncate -s 9895604649994 /mnt/foo\n  xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo\n  xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo\n\n  kernel BUG at include/linux/highmem.h:275!\n  Oops: invalid opcode: 0000 [#1] SMP PTI\n  CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\n  RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\n  RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\n  RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\n  RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\n  RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\n  R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\n  R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\n  FS:  00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\n  knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  Call Trace:\n   \u003cTASK\u003e\n   truncate_inode_partial_folio+0x3dd/0x620\n   truncate_inode_pages_range+0x226/0x720\n   ? bdev_getblk+0x52/0x3e0\n   ? ext4_get_group_desc+0x78/0x150\n   ? crc32c_arch+0xfd/0x180\n   ? __ext4_get_inode_loc+0x18c/0x840\n   ? ext4_inode_csum+0x117/0x160\n   ? jbd2_journal_dirty_metadata+0x61/0x390\n   ? __ext4_handle_dirty_metadata+0xa0/0x2b0\n   ? kmem_cache_free+0x90/0x5a0\n   ? jbd2_journal_stop+0x1d5/0x550\n   ? __ext4_journal_stop+0x49/0x100\n   truncate_pagecache_range+0x50/0x80\n   ext4_truncate_page_cache_block_range+0x57/0x3a0\n   ext4_punch_hole+0x1fe/0x670\n   ext4_fallocate+0x792/0x17d0\n   ? __count_memcg_events+0x175/0x2a0\n   vfs_fallocate+0x121/0x560\n   ksys_fallocate+0x51/0xc0\n   __x64_sys_fallocate+0x24/0x40\n   x64_sys_call+0x18d2/0x4170\n   do_syscall_64+0xa7/0x220\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by filtering out cases where the punching start offset exceeds\nmax_end.","status":"published","published":"2025-07-04T13:37:37Z","modified":"2026-05-11T21:23:34Z","updated_at":"2026-11-02T19:04:49.388915Z"}],"ghsa":[{"id":"GHSA-m2xx-pr2p-6vvw","title":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds...","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds punch offset\n\nPunching a hole with a start offset that exceeds max_end is not\npermitted and will result in a negative length in the\ntruncate_inode_partial_folio() function while truncating the page cache,\npotentially leading to undesirable consequences.\n\nA simple reproducer:\n\n  truncate -s 9895604649994 /mnt/foo\n  xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo\n  xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo\n\n  kernel BUG at include/linux/highmem.h:275!\n  Oops: invalid opcode: 0000 [#1] SMP PTI\n  CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\n  RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\n  RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\n  RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\n  RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\n  RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\n  R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\n  R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\n  FS:  00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\n  knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  Call Trace:\n   \u003cTASK\u003e\n   truncate_inode_partial_folio+0x3dd/0x620\n   truncate_inode_pages_range+0x226/0x720\n   ? bdev_getblk+0x52/0x3e0\n   ? ext4_get_group_desc+0x78/0x150\n   ? crc32c_arch+0xfd/0x180\n   ? __ext4_get_inode_loc+0x18c/0x840\n   ? ext4_inode_csum+0x117/0x160\n   ? jbd2_journal_dirty_metadata+0x61/0x390\n   ? __ext4_handle_dirty_metadata+0xa0/0x2b0\n   ? kmem_cache_free+0x90/0x5a0\n   ? jbd2_journal_stop+0x1d5/0x550\n   ? __ext4_journal_stop+0x49/0x100\n   truncate_pagecache_range+0x50/0x80\n   ext4_truncate_page_cache_block_range+0x57/0x3a0\n   ext4_punch_hole+0x1fe/0x670\n   ext4_fallocate+0x792/0x17d0\n   ? __count_memcg_events+0x175/0x2a0\n   vfs_fallocate+0x121/0x560\n   ksys_fallocate+0x51/0xc0\n   __x64_sys_fallocate+0x24/0x40\n   x64_sys_call+0x18d2/0x4170\n   do_syscall_64+0xa7/0x220\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by filtering out cases where the punching start offset exceeds\nmax_end.","status":"published","published":"2025-07-04T15:31:10Z","modified":"2025-11-18T15:31:47Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:04:51.288675Z"}],"nvd":[{"id":"CVE-2025-38221","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds punch offset\n\nPunching a hole with a start offset that exceeds max_end is not\npermitted and will result in a negative length in the\ntruncate_inode_partial_folio() function while truncating the page cache,\npotentially leading to undesirable consequences.\n\nA simple reproducer:\n\n  truncate -s 9895604649994 /mnt/foo\n  xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo\n  xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo\n\n  kernel BUG at include/linux/highmem.h:275!\n  Oops: invalid opcode: 0000 [#1] SMP PTI\n  CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\n  RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\n  RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\n  RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\n  RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\n  RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\n  R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\n  R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\n  FS:  00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\n  knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  Call Trace:\n   \u003cTASK\u003e\n   truncate_inode_partial_folio+0x3dd/0x620\n   truncate_inode_pages_range+0x226/0x720\n   ? bdev_getblk+0x52/0x3e0\n   ? ext4_get_group_desc+0x78/0x150\n   ? crc32c_arch+0xfd/0x180\n   ? __ext4_get_inode_loc+0x18c/0x840\n   ? ext4_inode_csum+0x117/0x160\n   ? jbd2_journal_dirty_metadata+0x61/0x390\n   ? __ext4_handle_dirty_metadata+0xa0/0x2b0\n   ? kmem_cache_free+0x90/0x5a0\n   ? jbd2_journal_stop+0x1d5/0x550\n   ? __ext4_journal_stop+0x49/0x100\n   truncate_pagecache_range+0x50/0x80\n   ext4_truncate_page_cache_block_range+0x57/0x3a0\n   ext4_punch_hole+0x1fe/0x670\n   ext4_fallocate+0x792/0x17d0\n   ? __count_memcg_events+0x175/0x2a0\n   vfs_fallocate+0x121/0x560\n   ksys_fallocate+0x51/0xc0\n   __x64_sys_fallocate+0x24/0x40\n   x64_sys_call+0x18d2/0x4170\n   do_syscall_64+0xa7/0x220\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by filtering out cases where the punching start offset exceeds\nmax_end.","status":"published","published":"2025-07-04T14:15:30.723Z","modified":"2026-06-17T09:16:25.047Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:11:16.997062Z"}],"osv":[{"id":"BELL-CVE-2025-38221","status":"published","published":"2025-07-05T06:00:31.187585Z","modified":"2026-06-25T07:18:27.290413574Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:21.997209Z"},{"id":"UBUNTU-CVE-2025-38221","description":"In the Linux kernel, the following vulnerability has been resolved: ext4: fix out of bounds punch offset Punching a hole with a start offset that exceeds max_end is not permitted and will result in a negative length in the truncate_inode_partial_folio() function while truncating the page cache, potentially leading to undesirable consequences. A simple reproducer:   truncate -s 9895604649994 /mnt/foo   xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo   xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo   kernel BUG at include/linux/highmem.h:275!   Oops: invalid opcode: 0000 [#1] SMP PTI   CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3   Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014   RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110   RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287   RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000   RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000   RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000   R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005   R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000   FS:  00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)   knlGS:0000000000000000   CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033   CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0   DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000   DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400   Call Trace:    \u003cTASK\u003e    truncate_inode_partial_folio+0x3dd/0x620    truncate_inode_pages_range+0x226/0x720    ? bdev_getblk+0x52/0x3e0    ? ext4_get_group_desc+0x78/0x150    ? crc32c_arch+0xfd/0x180    ? __ext4_get_inode_loc+0x18c/0x840    ? ext4_inode_csum+0x117/0x160    ? jbd2_journal_dirty_metadata+0x61/0x390    ? __ext4_handle_dirty_metadata+0xa0/0x2b0    ? kmem_cache_free+0x90/0x5a0    ? jbd2_journal_stop+0x1d5/0x550    ? __ext4_journal_stop+0x49/0x100    truncate_pagecache_range+0x50/0x80    ext4_truncate_page_cache_block_range+0x57/0x3a0    ext4_punch_hole+0x1fe/0x670    ext4_fallocate+0x792/0x17d0    ? __count_memcg_events+0x175/0x2a0    vfs_fallocate+0x121/0x560    ksys_fallocate+0x51/0xc0    __x64_sys_fallocate+0x24/0x40    x64_sys_call+0x18d2/0x4170    do_syscall_64+0xa7/0x220    entry_SYSCALL_64_after_hwframe+0x76/0x7e Fix this by filtering out cases where the punching start offset exceeds max_end.","status":"published","published":"2025-07-04T14:15:00Z","modified":"2025-11-20T17:24:17Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:33.787705Z"},{"id":"CVE-2025-38221","title":"ext4: fix out of bounds punch offset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix out of bounds punch offset\n\nPunching a hole with a start offset that exceeds max_end is not\npermitted and will result in a negative length in the\ntruncate_inode_partial_folio() function while truncating the page cache,\npotentially leading to undesirable consequences.\n\nA simple reproducer:\n\n  truncate -s 9895604649994 /mnt/foo\n  xfs_io -c \"pwrite 8796093022208 4096\" /mnt/foo\n  xfs_io -c \"fpunch 8796093022213 25769803777\" /mnt/foo\n\n  kernel BUG at include/linux/highmem.h:275!\n  Oops: invalid opcode: 0000 [#1] SMP PTI\n  CPU: 3 UID: 0 PID: 710 Comm: xfs_io Not tainted 6.15.0-rc3\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014\n  RIP: 0010:zero_user_segments.constprop.0+0xd7/0x110\n  RSP: 0018:ffffc90001cf3b38 EFLAGS: 00010287\n  RAX: 0000000000000005 RBX: ffffea0001485e40 RCX: 0000000000001000\n  RDX: 000000000040b000 RSI: 0000000000000005 RDI: 000000000040b000\n  RBP: 000000000040affb R08: ffff888000000000 R09: ffffea0000000000\n  R10: 0000000000000003 R11: 00000000fffc7fc5 R12: 0000000000000005\n  R13: 000000000040affb R14: ffffea0001485e40 R15: ffff888031cd3000\n  FS:  00007f4f63d0b780(0000) GS:ffff8880d337d000(0000)\n  knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 000000001ae0b038 CR3: 00000000536aa000 CR4: 00000000000006f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  Call Trace:\n   \u003cTASK\u003e\n   truncate_inode_partial_folio+0x3dd/0x620\n   truncate_inode_pages_range+0x226/0x720\n   ? bdev_getblk+0x52/0x3e0\n   ? ext4_get_group_desc+0x78/0x150\n   ? crc32c_arch+0xfd/0x180\n   ? __ext4_get_inode_loc+0x18c/0x840\n   ? ext4_inode_csum+0x117/0x160\n   ? jbd2_journal_dirty_metadata+0x61/0x390\n   ? __ext4_handle_dirty_metadata+0xa0/0x2b0\n   ? kmem_cache_free+0x90/0x5a0\n   ? jbd2_journal_stop+0x1d5/0x550\n   ? __ext4_journal_stop+0x49/0x100\n   truncate_pagecache_range+0x50/0x80\n   ext4_truncate_page_cache_block_range+0x57/0x3a0\n   ext4_punch_hole+0x1fe/0x670\n   ext4_fallocate+0x792/0x17d0\n   ? __count_memcg_events+0x175/0x2a0\n   vfs_fallocate+0x121/0x560\n   ksys_fallocate+0x51/0xc0\n   __x64_sys_fallocate+0x24/0x40\n   x64_sys_call+0x18d2/0x4170\n   do_syscall_64+0xa7/0x220\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by filtering out cases where the punching start offset exceeds\nmax_end.","status":"published","published":"2025-07-04T13:37:37.248Z","modified":"2026-10-28T02:30:59.221655323Z","updated_at":"2026-11-02T15:44:48.703031Z"}]}}