{"id":"DEBIAN-CVE-2025-39731","details":"In the Linux kernel, the following vulnerability has been resolved:  f2fs: vm_unmap_ram() may be called from an invalid context  When testing F2FS with xfstests using UFS backed virtual disks the kernel complains sometimes that f2fs_release_decomp_mem() calls vm_unmap_ram() from an invalid context. Example trace from f2fs/007 test:  f2fs/007 5s ...  [12:59:38][    8.902525] run fstests f2fs/007 [   11.468026] BUG: sleeping function called from invalid context at mm/vmalloc.c:2978 [   11.471849] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 68, name: irq/22-ufshcd [   11.475357] preempt_count: 1, expected: 0 [   11.476970] RCU nest depth: 0, expected: 0 [   11.478531] CPU: 0 UID: 0 PID: 68 Comm: irq/22-ufshcd Tainted: G        W           6.16.0-rc5-xfstests-ufs-g40f92e79b0aa #9 PREEMPT(none) [   11.478535] Tainted: [W]=WARN [   11.478536] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [   11.478537] Call Trace: [   11.478543]  \u003cTASK\u003e [   11.478545]  dump_stack_lvl+0x4e/0x70 [   11.478554]  __might_resched.cold+0xaf/0xbe [   11.478557]  vm_unmap_ram+0x21/0xb0 [   11.478560]  f2fs_release_decomp_mem+0x59/0x80 [   11.478563]  f2fs_free_dic+0x18/0x1a0 [   11.478565]  f2fs_finish_read_bio+0xd7/0x290 [   11.478570]  blk_update_request+0xec/0x3b0 [   11.478574]  ? sbitmap_queue_clear+0x3b/0x60 [   11.478576]  scsi_end_request+0x27/0x1a0 [   11.478582]  scsi_io_completion+0x40/0x300 [   11.478583]  ufshcd_mcq_poll_cqe_lock+0xa3/0xe0 [   11.478588]  ufshcd_sl_intr+0x194/0x1f0 [   11.478592]  ufshcd_threaded_intr+0x68/0xb0 [   11.478594]  ? __pfx_irq_thread_fn+0x10/0x10 [   11.478599]  irq_thread_fn+0x20/0x60 [   11.478602]  ? __pfx_irq_thread_fn+0x10/0x10 [   11.478603]  irq_thread+0xb9/0x180 [   11.478605]  ? __pfx_irq_thread_dtor+0x10/0x10 [   11.478607]  ? __pfx_irq_thread+0x10/0x10 [   11.478609]  kthread+0x10a/0x230 [   11.478614]  ? __pfx_kthread+0x10/0x10 [   11.478615]  ret_from_fork+0x7e/0xd0 [   11.478619]  ? __pfx_kthread+0x10/0x10 [   11.478621]  ret_from_fork_asm+0x1a/0x30 [   11.478623]  \u003c/TASK\u003e  This patch modifies in_task() check inside f2fs_read_end_io() to also check if interrupts are disabled. This ensures that pages are unmapped asynchronously in an interrupt handler.","modified":"2026-09-01T16:06:16.067325415Z","published":"2025-09-07T16:15:48.547Z","upstream":["CVE-2025-39731"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-39731"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.148-1"}]}],"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","6.1.147-1","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-2025-39731.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.43-1"}]}],"versions":["6.12.38-1","6.12.41-1","6.12.43-1~bpo12+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-39731.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.16.3-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.107-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.3-1~bpo13+1","6.16~rc7-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-39731.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"}]}