{"id":"DEBIAN-CVE-2025-38337","details":"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-\u003eh_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 -\u003e 0x00000001 ==================================================================  This issue is caused by missing data-race annotation for jh-\u003eb_modified. Therefore, the missing annotation needs to be added.","modified":"2026-09-01T16:06:14.310634510Z","published":"2025-07-10T09:15:28.373Z","upstream":["CVE-2025-38337"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-38337"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.147-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38337.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38337.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38337.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}