CVE-2025-68229 (GCVE-0-2025-68229)
Vulnerability from cvelistv5
Published
2025-12-16 13:57
Modified
2025-12-16 13:57
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()
If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we
attempt to dereference it in tcm_loop_tpg_address_show() we will get a
segfault, see below for an example. So, check tl_hba->sh before
dereferencing it.
Unable to allocate struct scsi_host
BUG: kernel NULL pointer dereference, address: 0000000000000194
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1
Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024
RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]
...
Call Trace:
<TASK>
configfs_read_iter+0x12d/0x1d0 [configfs]
vfs_read+0x1b5/0x300
ksys_read+0x6f/0xf0
...
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 2628b352c3d4905adf8129ea50900bd980b6ccef Version: 2628b352c3d4905adf8129ea50900bd980b6ccef Version: 2628b352c3d4905adf8129ea50900bd980b6ccef Version: 2628b352c3d4905adf8129ea50900bd980b6ccef Version: 2628b352c3d4905adf8129ea50900bd980b6ccef Version: 2628b352c3d4905adf8129ea50900bd980b6ccef Version: 2628b352c3d4905adf8129ea50900bd980b6ccef Version: 2628b352c3d4905adf8129ea50900bd980b6ccef |
||
{
"containers": {
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"programFiles": [
"drivers/target/loopback/tcm_loop.c"
],
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{
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"version": "5.15.197",
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},
{
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{
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"version": "6.6.118",
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},
{
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"status": "unaffected",
"version": "6.12.60",
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},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.10",
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},
{
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"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
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}
],
"cpeApplicability": [
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"nodes": [
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()\n\nIf the allocation of tl_hba-\u003esh fails in tcm_loop_driver_probe() and we\nattempt to dereference it in tcm_loop_tpg_address_show() we will get a\nsegfault, see below for an example. So, check tl_hba-\u003esh before\ndereferencing it.\n\n Unable to allocate struct scsi_host\n BUG: kernel NULL pointer dereference, address: 0000000000000194\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1\n Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024\n RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]\n...\n Call Trace:\n \u003cTASK\u003e\n configfs_read_iter+0x12d/0x1d0 [configfs]\n vfs_read+0x1b5/0x300\n ksys_read+0x6f/0xf0\n..."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-16T13:57:21.835Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268"
},
{
"url": "https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b"
},
{
"url": "https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf"
},
{
"url": "https://git.kernel.org/stable/c/1c9ba455b5073253ceaadae4859546e38e8261fe"
},
{
"url": "https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663"
},
{
"url": "https://git.kernel.org/stable/c/72e8831079266749a7023618a0de2f289a9dced6"
},
{
"url": "https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b"
},
{
"url": "https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc"
}
],
"title": "scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2025-68229",
"datePublished": "2025-12-16T13:57:21.835Z",
"dateReserved": "2025-12-16T13:41:40.258Z",
"dateUpdated": "2025-12-16T13:57:21.835Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-68229\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T14:15:57.067\",\"lastModified\":\"2025-12-18T15:08:06.237\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()\\n\\nIf the allocation of tl_hba-\u003esh fails in tcm_loop_driver_probe() and we\\nattempt to dereference it in tcm_loop_tpg_address_show() we will get a\\nsegfault, see below for an example. So, check tl_hba-\u003esh before\\ndereferencing it.\\n\\n Unable to allocate struct scsi_host\\n BUG: kernel NULL pointer dereference, address: 0000000000000194\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 0 P4D 0\\n Oops: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1\\n Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024\\n RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]\\n...\\n Call Trace:\\n \u003cTASK\u003e\\n configfs_read_iter+0x12d/0x1d0 [configfs]\\n vfs_read+0x1b5/0x300\\n ksys_read+0x6f/0xf0\\n...\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1c9ba455b5073253ceaadae4859546e38e8261fe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/72e8831079266749a7023618a0de2f289a9dced6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf\",\"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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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