Answer in brief
CVE-2025-68261 records a Unknown severity vulnerability in ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c755e251357a0cee0679081f08c3f4ba797a8009 <b322bac9f01d03190b5abc52be5d9dd9f22a2b41 || >=c755e251357a0cee0679081f08c3f4ba797a8009 <61e03dc3794ebf77a706b85e5a36c9c6d70be6de || >=c755e251357a0cee0679081f08c3f4ba797a8009 <5b266cf6851ce72b11b067fe02adf5a8687104ad || >=c755e251357a0cee0679081f08c3f4ba797a8009 <144c48da33a01d92995aeccd8208eb47d2a8e659 || >=c755e251357a0cee0679081f08c3f4ba797a8009 <22a76b0861ae61a299c8e126c1aca8c4fda820fd || >=c755e251357a0cee0679081f08c3f4ba797a8009 <ba8aeff294ac7ff6dfe293663d815c54c5ee218c || >=c755e251357a0cee0679081f08c3f4ba797a8009 <5cad18e527ba8a9ca5463cc170073eeb5a4826f4 || >=c755e251357a0cee0679081f08c3f4ba797a8009 <0cd8feea8777f8d9b9a862b89c688b049a5c8475 || 3e96c3fdcfccb321a9e1623f78cc71b44593e965 || 5781ac24bbd998ebb1ff30143bb06244d847af48 || 9b06cce3ca4d60d442c39bfa7c058b71b1cee6c2 || da1e40237f8f3516581b534c484c236a79ccfd14 || 7cf6b709b6412afd1d93b2c4b37163c3602e3b95 || >=3.16.44 <3.17 || >=3.18.107 <3.19 || >=4.4.129 <4.5 || >=4.9.14 <4.10 || >=4.10.2 <4.11 | b322bac9f01d03190b5abc52be5d9dd9f22a2b41, 61e03dc3794ebf77a706b85e5a36c9c6d70be6de, 5b266cf6851ce72b11b067fe02adf5a8687104ad, 144c48da33a01d92995aeccd8208eb47d2a8e659, 22a76b0861ae61a299c8e126c1aca8c4fda820fd, ba8aeff294ac7ff6dfe293663d815c54c5ee218c, 5cad18e527ba8a9ca5463cc170073eeb5a4826f4, 0cd8feea8777f8d9b9a862b89c688b049a5c8475, 3.17, 3.19, 4.5, 4.10, 4.11 |
| Linux/Linuxgeneric | 4.11 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Dec 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock() Fix a race between inline data destruction and block mapping. The function ext4_destroy_inline_data_nolock() changes the inode data layout by clearing EXT4_INODE_INLINE_DATA and setting EXT4_INODE_EXTENTS. At the same time, another thread may execute ext4_map_blocks(), which tests EXT4_INODE_EXTENTS to decide whether to call ext4_ext_map_blocks() or ext4_ind_map_blocks(). Without i_data_sem protection, ext4_ind_map_blocks() may receive inode with EXT4_INODE_EXTENTS flag and triggering assert. kernel BUG at fs/ext4/indirect.c:546! EXT4-fs (loop2): unmounting filesystem. invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:ext4_ind_map_blocks.cold+0x2b/0x5a fs/ext4/indirect.c:546 Call Trace: <TASK> ext4_map_blocks+0xb9b/0x16f0 fs/ext4/inode.c:681 _ext4_get_block+0x242/0x590 fs/ext4/inode.c:822 ext4_block_write_begin+0x48b/0x12c0 fs/ext4/inode.c:1124 ext4_write_begin+0x598/0xef0 fs/ext4/inode.c:1255 ext4_da_write_begin+0x21e/0x9c0 fs/ext4/inode.c:3000 generic_perform_write+0x259/0x5d0 mm/filemap.c:3846 ext4_buffered_write_iter+0x15b/0x470 fs/ext4/file.c:285 ext4_file_write_iter+0x8e0/0x17f0 fs/ext4/file.c:679 call_write_iter include/linux/fs.h:2271 [inline] do_iter_readv_writev+0x212/0x3c0 fs/read_write.c:735 do_iter_write+0x186/0x710 fs/read_write.c:861 vfs_iter_write+0x70/0xa0 fs/read_write.c:902 iter_file_splice_write+0x73b/0xc90 fs/splice.c:685 do_splice_from fs/splice.c:763 [inline] direct_splice_actor+0x10f/0x170 fs/splice.c:950 splice_direct_to_actor+0x33a/0xa10 fs/splice.c:896 do_splice_direct+0x1a9/0x280 fs/splice.c:1002 do_sendfile+0xb13/0x12c0 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __x64_sys_sendfile64+0x1cf/0x210 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
Quoted source text, attributed separately from HOL analysis.