CVE-2025-68261High· 7.5▾ TwilightIn 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_da…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.5%
0.5% → 0.5%
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
Linux >= c755e251357a0cee0679081f08c3f4ba797a8009 < b322bac9f01d03190b5abc52be5d9dd9f22a2b41Linux >= c755e251357a0cee0679081f08c3f4ba797a8009 < 61e03dc3794ebf77a706b85e5a36c9c6d70be6deLinux >= c755e251357a0cee0679081f08c3f4ba797a8009 < 5b266cf6851ce72b11b067fe02adf5a8687104adLinux >= c755e251357a0cee0679081f08c3f4ba797a8009 < 144c48da33a01d92995aeccd8208eb47d2a8e659Linux >= c755e251357a0cee0679081f08c3f4ba797a8009 < 22a76b0861ae61a299c8e126c1aca8c4fda820fdLinux >= c755e251357a0cee0679081f08c3f4ba797a8009 < ba8aeff294ac7ff6dfe293663d815c54c5ee218cLinux >= c755e251357a0cee0679081f08c3f4ba797a8009 < 5cad18e527ba8a9ca5463cc170073eeb5a4826f4Linux >= c755e251357a0cee0679081f08c3f4ba797a8009 < 0cd8feea8777f8d9b9a862b89c688b049a5c8475Linux 3e96c3fdcfccb321a9e1623f78cc71b44593e965Linux 5781ac24bbd998ebb1ff30143bb06244d847af48Linux 9b06cce3ca4d60d442c39bfa7c058b71b1cee6c2Linux da1e40237f8f3516581b534c484c236a79ccfd14Linux 7cf6b709b6412afd1d93b2c4b37163c3602e3b95Linux >= 3.16.44 < 3.17Linux >= 3.18.107 < 3.19Linux >= 4.4.129 < 4.5Linux >= 4.9.14 < 4.10Linux >= 4.10.2 < 4.11Linux 4.11Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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