CVE-2025-39731 (GCVE-0-2025-39731)
Vulnerability from cvelistv5
Published
2025-09-07 15:16
Modified
2025-09-29 05:58
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: bff139b49d9f70c1ac5384aac94554846aa834de Version: bff139b49d9f70c1ac5384aac94554846aa834de Version: bff139b49d9f70c1ac5384aac94554846aa834de Version: bff139b49d9f70c1ac5384aac94554846aa834de Version: bff139b49d9f70c1ac5384aac94554846aa834de Version: bff139b49d9f70c1ac5384aac94554846aa834de |
||||||
|
|||||||||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/f2fs/data.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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"versionType": "git"
},
{
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{
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"status": "affected",
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},
{
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{
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"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
}
]
},
{
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"product": "Linux",
"programFiles": [
"fs/f2fs/data.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"lessThan": "6.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.148",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.102",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.148",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.102",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.42",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.10",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.1",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "6.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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] \u003cTASK\u003e\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] \u003c/TASK\u003e\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."
}
],
"providerMetadata": {
"dateUpdated": "2025-09-29T05:58:16.912Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"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"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-39731",
"datePublished": "2025-09-07T15:16:20.023Z",
"dateReserved": "2025-04-16T07:20:57.118Z",
"dateUpdated": "2025-09-29T05:58:16.912Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-39731\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-07T16:15:48.547\",\"lastModified\":\"2025-09-08T16:25:38.810\",\"vulnStatus\":\"Awaiting Analysis\",\"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] \u003cTASK\u003e\\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] \u003c/TASK\u003e\\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.\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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