CVE - CVE-2025-38337

CVE-ID
CVE-2025-38337	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata() Since handle->h_transaction may be a NULL pointer, so we should change it to call is_handle_aborted(handle) first before dereferencing it. And the following data-race was reported in my fuzzer: ================================================================== BUG: KCSAN: data-race in jbd2_journal_dirty_metadata / jbd2_journal_dirty_metadata write to 0xffff888011024104 of 4 bytes by task 10881 on cpu 1: jbd2_journal_dirty_metadata+0x2a5/0x770 fs/jbd2/transaction.c:1556 __ext4_handle_dirty_metadata+0xe7/0x4b0 fs/ext4/ext4_jbd2.c:358 ext4_do_update_inode fs/ext4/inode.c:5220 [inline] ext4_mark_iloc_dirty+0x32c/0xd50 fs/ext4/inode.c:5869 __ext4_mark_inode_dirty+0xe1/0x450 fs/ext4/inode.c:6074 ext4_dirty_inode+0x98/0xc0 fs/ext4/inode.c:6103 .... read to 0xffff888011024104 of 4 bytes by task 10880 on cpu 0: jbd2_journal_dirty_metadata+0xf2/0x770 fs/jbd2/transaction.c:1512 __ext4_handle_dirty_metadata+0xe7/0x4b0 fs/ext4/ext4_jbd2.c:358 ext4_do_update_inode fs/ext4/inode.c:5220 [inline] ext4_mark_iloc_dirty+0x32c/0xd50 fs/ext4/inode.c:5869 __ext4_mark_inode_dirty+0xe1/0x450 fs/ext4/inode.c:6074 ext4_dirty_inode+0x98/0xc0 fs/ext4/inode.c:6103 .... value changed: 0x00000000 -> 0x00000001 ================================================================== This issue is caused by missing data-race annotation for jh->b_modified. Therefore, the missing annotation needs to be added.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/23361b479f2700c00960d3ae9cdc8ededa762d47 URL:https://git.kernel.org/stable/c/23361b479f2700c00960d3ae9cdc8ededa762d47 MISC:https://git.kernel.org/stable/c/2e7c64d7a92c031d016f11c8e8cb05131ab7b75a URL:https://git.kernel.org/stable/c/2e7c64d7a92c031d016f11c8e8cb05131ab7b75a MISC:https://git.kernel.org/stable/c/43d5e3bb5f1dcd91e30238ea0b59a5f77063f84e URL:https://git.kernel.org/stable/c/43d5e3bb5f1dcd91e30238ea0b59a5f77063f84e MISC:https://git.kernel.org/stable/c/5c1a34ff5b0bfdfd2f9343aa9b08d25df618bac5 URL:https://git.kernel.org/stable/c/5c1a34ff5b0bfdfd2f9343aa9b08d25df618bac5 MISC:https://git.kernel.org/stable/c/a377996d714afb8d4d5f4906336f78510039da29 URL:https://git.kernel.org/stable/c/a377996d714afb8d4d5f4906336f78510039da29 MISC:https://git.kernel.org/stable/c/af98b0157adf6504fade79b3e6cb260c4ff68e37 URL:https://git.kernel.org/stable/c/af98b0157adf6504fade79b3e6cb260c4ff68e37 MISC:https://git.kernel.org/stable/c/ec669e5bf409f16e464bfad75f0ba039a45de29a URL:https://git.kernel.org/stable/c/ec669e5bf409f16e464bfad75f0ba039a45de29a MISC:https://git.kernel.org/stable/c/f78b38af3540b4875147b7b884ee11a27b3dbf4c URL:https://git.kernel.org/stable/c/f78b38af3540b4875147b7b884ee11a27b3dbf4c
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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