Answer in brief
CVE-2025-68261 records a High severity (CVSS 7.5) 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 1518-4 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.
CVSS is 7.5. 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 1518-4 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 1518-4 PN/DP MFPgeneric | >=V3.1.7 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.7 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.7 <* | * |
Published upstream
Dec 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 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.