CVE-2025-39731 - Vulnerability Details

Link	Providers
https://git.kernel.org/stable/c/08a7efc5b02a0620ae16aa9584060e980a69cb55
https://git.kernel.org/stable/c/0fe7976b62546f1e95eebfe9879925e9aa22b7a8
https://git.kernel.org/stable/c/1023836d1b9465593c8746f97d608da32958785f
https://git.kernel.org/stable/c/18eea36f4f460ead3750ed4afe5496f7ce55f99e
https://git.kernel.org/stable/c/411e00f44e2e1a7fdb526013b25a7f0ed22a0947
https://git.kernel.org/stable/c/eb69e69a5ae6c8350957893b5f68bd55b1565fb2

Type	Values Removed	Values Added
Description		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] <TASK> [ 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] </TASK> 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.
Title		f2fs: vm_unmap_ram() may be called from an invalid context
References		https://git.kernel.org/stable/c/08a7efc5b02a0620ae16aa9584060e980a69cb55 https://git.kernel.org/stable/c/0fe7976b62546f1e95eebfe9879925e9aa22b7a8 https://git.kernel.org/stable/c/1023836d1b9465593c8746f97d608da32958785f https://git.kernel.org/stable/c/18eea36f4f460ead3750ed4afe5496f7ce55f99e https://git.kernel.org/stable/c/411e00f44e2e1a7fdb526013b25a7f0ed22a0947 https://git.kernel.org/stable/c/eb69e69a5ae6c8350957893b5f68bd55b1565fb2

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-39731", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.118Z", "datePublished": "2025-09-07T15:16:20.023Z", "dateUpdated": "2025-09-07T15:16:20.023Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-07T15:16:20.023Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: vm_unmap_ram() may be called from an invalid context\n\nWhen testing F2FS with xfstests using UFS backed virtual disks the\nkernel complains sometimes that f2fs_release_decomp_mem() calls\nvm_unmap_ram() from an invalid context. Example trace from\nf2fs/007 test:\n\nf2fs/007 5s ... [12:59:38][ 8.902525] run fstests f2fs/007\n[ 11.468026] BUG: sleeping function called from invalid context at mm/vmalloc.c:2978\n[ 11.471849] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 68, name: irq/22-ufshcd\n[ 11.475357] preempt_count: 1, expected: 0\n[ 11.476970] RCU nest depth: 0, expected: 0\n[ 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)\n[ 11.478535] Tainted: [W]=WARN\n[ 11.478536] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 11.478537] Call Trace:\n[ 11.478543] <TASK>\n[ 11.478545] dump_stack_lvl+0x4e/0x70\n[ 11.478554] __might_resched.cold+0xaf/0xbe\n[ 11.478557] vm_unmap_ram+0x21/0xb0\n[ 11.478560] f2fs_release_decomp_mem+0x59/0x80\n[ 11.478563] f2fs_free_dic+0x18/0x1a0\n[ 11.478565] f2fs_finish_read_bio+0xd7/0x290\n[ 11.478570] blk_update_request+0xec/0x3b0\n[ 11.478574] ? sbitmap_queue_clear+0x3b/0x60\n[ 11.478576] scsi_end_request+0x27/0x1a0\n[ 11.478582] scsi_io_completion+0x40/0x300\n[ 11.478583] ufshcd_mcq_poll_cqe_lock+0xa3/0xe0\n[ 11.478588] ufshcd_sl_intr+0x194/0x1f0\n[ 11.478592] ufshcd_threaded_intr+0x68/0xb0\n[ 11.478594] ? __pfx_irq_thread_fn+0x10/0x10\n[ 11.478599] irq_thread_fn+0x20/0x60\n[ 11.478602] ? __pfx_irq_thread_fn+0x10/0x10\n[ 11.478603] irq_thread+0xb9/0x180\n[ 11.478605] ? __pfx_irq_thread_dtor+0x10/0x10\n[ 11.478607] ? __pfx_irq_thread+0x10/0x10\n[ 11.478609] kthread+0x10a/0x230\n[ 11.478614] ? __pfx_kthread+0x10/0x10\n[ 11.478615] ret_from_fork+0x7e/0xd0\n[ 11.478619] ? __pfx_kthread+0x10/0x10\n[ 11.478621] ret_from_fork_asm+0x1a/0x30\n[ 11.478623] </TASK>\n\nThis patch modifies in_task() check inside f2fs_read_end_io() to also\ncheck if interrupts are disabled. This ensures that pages are unmapped\nasynchronously in an interrupt handler."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/data.c"], "versions": [{"version": "bff139b49d9f70c1ac5384aac94554846aa834de", "lessThan": "eb69e69a5ae6c8350957893b5f68bd55b1565fb2", "status": "affected", "versionType": "git"}, {"version": "bff139b49d9f70c1ac5384aac94554846aa834de", "lessThan": "1023836d1b9465593c8746f97d608da32958785f", "status": "affected", "versionType": "git"}, {"version": "bff139b49d9f70c1ac5384aac94554846aa834de", "lessThan": "0fe7976b62546f1e95eebfe9879925e9aa22b7a8", "status": "affected", "versionType": "git"}, {"version": "bff139b49d9f70c1ac5384aac94554846aa834de", "lessThan": "411e00f44e2e1a7fdb526013b25a7f0ed22a0947", "status": "affected", "versionType": "git"}, {"version": "bff139b49d9f70c1ac5384aac94554846aa834de", "lessThan": "18eea36f4f460ead3750ed4afe5496f7ce55f99e", "status": "affected", "versionType": "git"}, {"version": "bff139b49d9f70c1ac5384aac94554846aa834de", "lessThan": "08a7efc5b02a0620ae16aa9584060e980a69cb55", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/data.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.148", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.102", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.42", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.10", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.1", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.1.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.102"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.15.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.16.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.17-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/eb69e69a5ae6c8350957893b5f68bd55b1565fb2"}, {"url": "https://git.kernel.org/stable/c/1023836d1b9465593c8746f97d608da32958785f"}, {"url": "https://git.kernel.org/stable/c/0fe7976b62546f1e95eebfe9879925e9aa22b7a8"}, {"url": "https://git.kernel.org/stable/c/411e00f44e2e1a7fdb526013b25a7f0ed22a0947"}, {"url": "https://git.kernel.org/stable/c/18eea36f4f460ead3750ed4afe5496f7ce55f99e"}, {"url": "https://git.kernel.org/stable/c/08a7efc5b02a0620ae16aa9584060e980a69cb55"}], "title": "f2fs: vm_unmap_ram() may be called from an invalid context", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: vm_unmap_ram() may be called from an invalid context\n\nWhen testing F2FS with xfstests using UFS backed virtual disks the\nkernel complains sometimes that f2fs_release_decomp_mem() calls\nvm_unmap_ram() from an invalid context. Example trace from\nf2fs/007 test:\n\nf2fs/007 5s ... [12:59:38][ 8.902525] run fstests f2fs/007\n[ 11.468026] BUG: sleeping function called from invalid context at mm/vmalloc.c:2978\n[ 11.471849] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 68, name: irq/22-ufshcd\n[ 11.475357] preempt_count: 1, expected: 0\n[ 11.476970] RCU nest depth: 0, expected: 0\n[ 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)\n[ 11.478535] Tainted: [W]=WARN\n[ 11.478536] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n[ 11.478537] Call Trace:\n[ 11.478543] <TASK>\n[ 11.478545] dump_stack_lvl+0x4e/0x70\n[ 11.478554] __might_resched.cold+0xaf/0xbe\n[ 11.478557] vm_unmap_ram+0x21/0xb0\n[ 11.478560] f2fs_release_decomp_mem+0x59/0x80\n[ 11.478563] f2fs_free_dic+0x18/0x1a0\n[ 11.478565] f2fs_finish_read_bio+0xd7/0x290\n[ 11.478570] blk_update_request+0xec/0x3b0\n[ 11.478574] ? sbitmap_queue_clear+0x3b/0x60\n[ 11.478576] scsi_end_request+0x27/0x1a0\n[ 11.478582] scsi_io_completion+0x40/0x300\n[ 11.478583] ufshcd_mcq_poll_cqe_lock+0xa3/0xe0\n[ 11.478588] ufshcd_sl_intr+0x194/0x1f0\n[ 11.478592] ufshcd_threaded_intr+0x68/0xb0\n[ 11.478594] ? __pfx_irq_thread_fn+0x10/0x10\n[ 11.478599] irq_thread_fn+0x20/0x60\n[ 11.478602] ? __pfx_irq_thread_fn+0x10/0x10\n[ 11.478603] irq_thread+0xb9/0x180\n[ 11.478605] ? __pfx_irq_thread_dtor+0x10/0x10\n[ 11.478607] ? __pfx_irq_thread+0x10/0x10\n[ 11.478609] kthread+0x10a/0x230\n[ 11.478614] ? __pfx_kthread+0x10/0x10\n[ 11.478615] ret_from_fork+0x7e/0xd0\n[ 11.478619] ? __pfx_kthread+0x10/0x10\n[ 11.478621] ret_from_fork_asm+0x1a/0x30\n[ 11.478623] </TASK>\n\nThis patch modifies in_task() check inside f2fs_read_end_io() to also\ncheck if interrupts are disabled. This ensures that pages are unmapped\nasynchronously in an interrupt handler."}], "id": "CVE-2025-39731", "lastModified": "2025-09-07T16:15:48.547", "metrics": {}, "published": "2025-09-07T16:15:48.547", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/08a7efc5b02a0620ae16aa9584060e980a69cb55"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0fe7976b62546f1e95eebfe9879925e9aa22b7a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1023836d1b9465593c8746f97d608da32958785f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18eea36f4f460ead3750ed4afe5496f7ce55f99e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/411e00f44e2e1a7fdb526013b25a7f0ed22a0947"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb69e69a5ae6c8350957893b5f68bd55b1565fb2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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