CVE-2026-23292 (GCVE-0-2026-23292)
Vulnerability from cvelistv5 – Published: 2026-03-25 10:26 – Updated: 2026-11-05 21:33
VLAI
EPSS
VEX
Title
scsi: target: Fix recursive locking in __configfs_open_file()
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: Fix recursive locking in __configfs_open_file()
In flush_write_buffer, &p->frag_sem is acquired and then the loaded store
function is called, which, here, is target_core_item_dbroot_store(). This
function called filp_open(), following which these functions were called
(in reverse order), according to the call trace:
down_read
__configfs_open_file
do_dentry_open
vfs_open
do_open
path_openat
do_filp_open
file_open_name
filp_open
target_core_item_dbroot_store
flush_write_buffer
configfs_write_iter
target_core_item_dbroot_store() tries to validate the new file path by
trying to open the file path provided to it; however, in this case, the bug
report shows:
db_root: not a directory: /sys/kernel/config/target/dbroot
indicating that the same configfs file was tried to be opened, on which it
is currently working on. Thus, it is trying to acquire frag_sem semaphore
of the same file of which it already holds the semaphore obtained in
flush_write_buffer(), leading to acquiring the semaphore in a nested manner
and a possibility of recursive locking.
Fix this by modifying target_core_item_dbroot_store() to use kern_path()
instead of filp_open() to avoid opening the file using filesystem-specific
function __configfs_open_file(), and further modifying it to make this fix
compatible.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 21:25 UTC
Assigner
References
7 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
b0841eefd9693827afb9888235e26ddd098f9cef , < 3161ef61f121d4573cad5b57c92188dcd9b284b3
(git)
Affected: b0841eefd9693827afb9888235e26ddd098f9cef , < e8ef82cb6443d5f3260b1b830e17f03dda4229ea (git) Affected: b0841eefd9693827afb9888235e26ddd098f9cef , < 4fcfa424a581d823cb1a9676e3eefe6ca17e453a (git) Affected: b0841eefd9693827afb9888235e26ddd098f9cef , < 9a5641024fbfd9b24fe65984ad85fea10a3ae438 (git) Affected: b0841eefd9693827afb9888235e26ddd098f9cef , < 142eacb50fb903a4c10dee7e67b6e79ebb36a582 (git) Affected: b0841eefd9693827afb9888235e26ddd098f9cef , < 14d4ac19d1895397532eec407433c5d74d9da53b (git) Affected: 49824b5c875087a52672b0c8e8ecbefe6f773532 (git) Affected: 09e21253d17f53bdb5aac0e0dbd057a29fcbe8d1 (git) Affected: 0dfc45be875a378c2a3a4d6ed8e668ec8eb75073 (git) Affected: 4.9.201 , < 4.10 (semver) Affected: 4.14.154 , < 4.15 (semver) Affected: 4.19.84 , < 4.20 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.3
Unaffected: 0 , < 5.3 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.77 , ≤ 6.12.* (semver) Unaffected: 6.18.17 , ≤ 6.18.* (semver) Unaffected: 6.19.7 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T01:13:45.389Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
],
"x_adpType": "supplier"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-23292",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-05T21:25:22.318518Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-11-05T21:33:35.930Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3161ef61f121d4573cad5b57c92188dcd9b284b3",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "e8ef82cb6443d5f3260b1b830e17f03dda4229ea",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "4fcfa424a581d823cb1a9676e3eefe6ca17e453a",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "9a5641024fbfd9b24fe65984ad85fea10a3ae438",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "142eacb50fb903a4c10dee7e67b6e79ebb36a582",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "14d4ac19d1895397532eec407433c5d74d9da53b",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"status": "affected",
"version": "49824b5c875087a52672b0c8e8ecbefe6f773532",
"versionType": "git"
},
{
"status": "affected",
"version": "09e21253d17f53bdb5aac0e0dbd057a29fcbe8d1",
"versionType": "git"
},
{
"status": "affected",
"version": "0dfc45be875a378c2a3a4d6ed8e668ec8eb75073",
"versionType": "git"
},
{
"lessThan": "4.10",
"status": "affected",
"version": "4.9.201",
"versionType": "semver"
},
{
"lessThan": "4.15",
"status": "affected",
"version": "4.14.154",
"versionType": "semver"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.84",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"lessThan": "5.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.77",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.17",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.7",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.9.201",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.14.154",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.19.84",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: Fix recursive locking in __configfs_open_file()\n\nIn flush_write_buffer, \u0026p-\u003efrag_sem is acquired and then the loaded store\nfunction is called, which, here, is target_core_item_dbroot_store(). This\nfunction called filp_open(), following which these functions were called\n(in reverse order), according to the call trace:\n\n down_read\n __configfs_open_file\n do_dentry_open\n vfs_open\n do_open\n path_openat\n do_filp_open\n file_open_name\n filp_open\n target_core_item_dbroot_store\n flush_write_buffer\n configfs_write_iter\n\ntarget_core_item_dbroot_store() tries to validate the new file path by\ntrying to open the file path provided to it; however, in this case, the bug\nreport shows:\n\ndb_root: not a directory: /sys/kernel/config/target/dbroot\n\nindicating that the same configfs file was tried to be opened, on which it\nis currently working on. Thus, it is trying to acquire frag_sem semaphore\nof the same file of which it already holds the semaphore obtained in\nflush_write_buffer(), leading to acquiring the semaphore in a nested manner\nand a possibility of recursive locking.\n\nFix this by modifying target_core_item_dbroot_store() to use kern_path()\ninstead of filp_open() to avoid opening the file using filesystem-specific\nfunction __configfs_open_file(), and further modifying it to make this fix\ncompatible."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T16:04:30.234Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3161ef61f121d4573cad5b57c92188dcd9b284b3"
},
{
"url": "https://git.kernel.org/stable/c/e8ef82cb6443d5f3260b1b830e17f03dda4229ea"
},
{
"url": "https://git.kernel.org/stable/c/4fcfa424a581d823cb1a9676e3eefe6ca17e453a"
},
{
"url": "https://git.kernel.org/stable/c/9a5641024fbfd9b24fe65984ad85fea10a3ae438"
},
{
"url": "https://git.kernel.org/stable/c/142eacb50fb903a4c10dee7e67b6e79ebb36a582"
},
{
"url": "https://git.kernel.org/stable/c/14d4ac19d1895397532eec407433c5d74d9da53b"
}
],
"title": "scsi: target: Fix recursive locking in __configfs_open_file()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23292",
"datePublished": "2026-03-25T10:26:50.408Z",
"dateReserved": "2026-01-13T15:37:45.992Z",
"dateUpdated": "2026-11-05T21:33:35.930Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-23292",
"date": "2026-11-15",
"epss": "0.0013",
"percentile": "0.02698"
},
"microsoft_vex": {
"current_release_date": "2026-03-27T14:41:13.000Z",
"cve": "CVE-2026-23292",
"id": "msrc_CVE-2026-23292",
"initial_release_date": "2026-03-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "scsi: target: Fix recursive locking in __configfs_open_file()",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-23292.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3161ef61f121d4573cad5b57c92188dcd9b284b3",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "e8ef82cb6443d5f3260b1b830e17f03dda4229ea",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "4fcfa424a581d823cb1a9676e3eefe6ca17e453a",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "9a5641024fbfd9b24fe65984ad85fea10a3ae438",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "142eacb50fb903a4c10dee7e67b6e79ebb36a582",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "14d4ac19d1895397532eec407433c5d74d9da53b",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"status": "affected",
"version": "49824b5c875087a52672b0c8e8ecbefe6f773532",
"versionType": "git"
},
{
"status": "affected",
"version": "09e21253d17f53bdb5aac0e0dbd057a29fcbe8d1",
"versionType": "git"
},
{
"status": "affected",
"version": "0dfc45be875a378c2a3a4d6ed8e668ec8eb75073",
"versionType": "git"
},
{
"lessThan": "4.10",
"status": "affected",
"version": "4.9.201",
"versionType": "semver"
},
{
"lessThan": "4.15",
"status": "affected",
"version": "4.14.154",
"versionType": "semver"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.84",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"lessThan": "5.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "98FE002B-FFEB-420A-9E67-5E04854D1169",
"versionEndExcluding": "4.10",
"versionStartIncluding": "4.9.201",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "344FEFB4-E393-4E04-905A-4734AC267EC1",
"versionEndExcluding": "4.15",
"versionStartIncluding": "4.14.154",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B7EACEB9-7173-47F4-83A4-AE06CE74D78B",
"versionEndExcluding": "4.20",
"versionStartIncluding": "4.19.84",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "761FF490-ED98-4C4D-998C-6CFBB8D2B911",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "5.3.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C57BB918-DF28-46B3-94F7-144176841267",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B3D12E00-E42D-4056-B354-BAD4903C03A5",
"versionEndExcluding": "6.12.77",
"versionStartIncluding": "6.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A5E006E4-59C7-43C1-9231-62A72219F2BA",
"versionEndExcluding": "6.18.17",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "69245D10-0B71-485E-80C3-A64F077004D3",
"versionEndExcluding": "6.19.7",
"versionStartIncluding": "6.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.3:-:*:*:*:*:*:*",
"matchCriteriaId": "D036D76E-AC69-4382-B4C1-8EDA1ABB2941",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.3:rc8:*:*:*:*:*:*",
"matchCriteriaId": "999345BA-F820-40B9-A711-32CA9265C289",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*",
"matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*",
"matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: Fix recursive locking in __configfs_open_file()\n\nIn flush_write_buffer, \u0026p-\u003efrag_sem is acquired and then the loaded store\nfunction is called, which, here, is target_core_item_dbroot_store(). This\nfunction called filp_open(), following which these functions were called\n(in reverse order), according to the call trace:\n\n down_read\n __configfs_open_file\n do_dentry_open\n vfs_open\n do_open\n path_openat\n do_filp_open\n file_open_name\n filp_open\n target_core_item_dbroot_store\n flush_write_buffer\n configfs_write_iter\n\ntarget_core_item_dbroot_store() tries to validate the new file path by\ntrying to open the file path provided to it; however, in this case, the bug\nreport shows:\n\ndb_root: not a directory: /sys/kernel/config/target/dbroot\n\nindicating that the same configfs file was tried to be opened, on which it\nis currently working on. Thus, it is trying to acquire frag_sem semaphore\nof the same file of which it already holds the semaphore obtained in\nflush_write_buffer(), leading to acquiring the semaphore in a nested manner\nand a possibility of recursive locking.\n\nFix this by modifying target_core_item_dbroot_store() to use kern_path()\ninstead of filp_open() to avoid opening the file using filesystem-specific\nfunction __configfs_open_file(), and further modifying it to make this fix\ncompatible."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: target: Correcci\u00f3n de bloqueo recursivo en __configfs_open_file()\n\nEn flush_write_buffer, se adquiere \u0026amp;p-\u0026gt;frag_sem y luego se llama a la funci\u00f3n de almacenamiento cargada, que, aqu\u00ed, es target_core_item_dbroot_store(). Esta funci\u00f3n llam\u00f3 a filp_open(), tras lo cual se llamaron a estas funciones (en orden inverso), seg\u00fan el rastro de llamadas:\n\n down_read\n __configfs_open_file\n do_dentry_open\n vfs_open\n do_open\n path_openat\n do_filp_open\n file_open_name\n filp_open\n target_core_item_dbroot_store\n flush_write_buffer\n configfs_write_iter\n\ntarget_core_item_dbroot_store() intenta validar la nueva ruta de archivo intentando abrir la ruta de archivo que se le proporcion\u00f3; sin embargo, en este caso, el informe de error muestra:\n\ndb_root: not a directory: /sys/kernel/config/target/dbroot\n\nindicando que se intent\u00f3 abrir el mismo archivo configfs, en el que est\u00e1 trabajando actualmente. As\u00ed, est\u00e1 intentando adquirir el sem\u00e1foro frag_sem del mismo archivo del que ya posee el sem\u00e1foro obtenido en flush_write_buffer(), lo que lleva a adquirir el sem\u00e1foro de forma anidada y una posibilidad de bloqueo recursivo.\n\nSolucione esto modificando target_core_item_dbroot_store() para usar kern_path() en lugar de filp_open() para evitar abrir el archivo usando la funci\u00f3n espec\u00edfica del sistema de archivos __configfs_open_file(), y modific\u00e1ndolo a\u00fan m\u00e1s para hacer que esta correcci\u00f3n sea compatible."
}
],
"id": "CVE-2026-23292",
"lastModified": "2026-11-05T22:18:11.993",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-23292",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-05T21:25:22.318518Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-25T11:16:24.357",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/142eacb50fb903a4c10dee7e67b6e79ebb36a582"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/14d4ac19d1895397532eec407433c5d74d9da53b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/3161ef61f121d4573cad5b57c92188dcd9b284b3"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/4fcfa424a581d823cb1a9676e3eefe6ca17e453a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/9a5641024fbfd9b24fe65984ad85fea10a3ae438"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e8ef82cb6443d5f3260b1b830e17f03dda4229ea"
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-674"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-11-05T19:11:15+00:00",
"cve": "CVE-2026-23292",
"id": "CVE-2026-23292",
"initial_release_date": "2026-03-25T00:00:00+00:00",
"product_status:known_affected": "200",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: scsi: target: Fix recursive locking in __configfs_open_file()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23292.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T01:13:45.389Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
}
],
"x_adpType": "supplier"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-23292",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-05T21:25:22.318518Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-11-05T21:25:23.446Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3161ef61f121d4573cad5b57c92188dcd9b284b3",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "e8ef82cb6443d5f3260b1b830e17f03dda4229ea",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "4fcfa424a581d823cb1a9676e3eefe6ca17e453a",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "9a5641024fbfd9b24fe65984ad85fea10a3ae438",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "142eacb50fb903a4c10dee7e67b6e79ebb36a582",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"lessThan": "14d4ac19d1895397532eec407433c5d74d9da53b",
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"versionType": "git"
},
{
"status": "affected",
"version": "49824b5c875087a52672b0c8e8ecbefe6f773532",
"versionType": "git"
},
{
"status": "affected",
"version": "09e21253d17f53bdb5aac0e0dbd057a29fcbe8d1",
"versionType": "git"
},
{
"status": "affected",
"version": "0dfc45be875a378c2a3a4d6ed8e668ec8eb75073",
"versionType": "git"
},
{
"lessThan": "4.10",
"status": "affected",
"version": "4.9.201",
"versionType": "semver"
},
{
"lessThan": "4.15",
"status": "affected",
"version": "4.14.154",
"versionType": "semver"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.84",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"lessThan": "5.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.77",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.17",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.7",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0",
"versionStartIncluding": "5.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.9.201",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.14.154",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.19.84",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: Fix recursive locking in __configfs_open_file()\n\nIn flush_write_buffer, \u0026p-\u003efrag_sem is acquired and then the loaded store\nfunction is called, which, here, is target_core_item_dbroot_store(). This\nfunction called filp_open(), following which these functions were called\n(in reverse order), according to the call trace:\n\n down_read\n __configfs_open_file\n do_dentry_open\n vfs_open\n do_open\n path_openat\n do_filp_open\n file_open_name\n filp_open\n target_core_item_dbroot_store\n flush_write_buffer\n configfs_write_iter\n\ntarget_core_item_dbroot_store() tries to validate the new file path by\ntrying to open the file path provided to it; however, in this case, the bug\nreport shows:\n\ndb_root: not a directory: /sys/kernel/config/target/dbroot\n\nindicating that the same configfs file was tried to be opened, on which it\nis currently working on. Thus, it is trying to acquire frag_sem semaphore\nof the same file of which it already holds the semaphore obtained in\nflush_write_buffer(), leading to acquiring the semaphore in a nested manner\nand a possibility of recursive locking.\n\nFix this by modifying target_core_item_dbroot_store() to use kern_path()\ninstead of filp_open() to avoid opening the file using filesystem-specific\nfunction __configfs_open_file(), and further modifying it to make this fix\ncompatible."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T16:04:30.234Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3161ef61f121d4573cad5b57c92188dcd9b284b3"
},
{
"url": "https://git.kernel.org/stable/c/e8ef82cb6443d5f3260b1b830e17f03dda4229ea"
},
{
"url": "https://git.kernel.org/stable/c/4fcfa424a581d823cb1a9676e3eefe6ca17e453a"
},
{
"url": "https://git.kernel.org/stable/c/9a5641024fbfd9b24fe65984ad85fea10a3ae438"
},
{
"url": "https://git.kernel.org/stable/c/142eacb50fb903a4c10dee7e67b6e79ebb36a582"
},
{
"url": "https://git.kernel.org/stable/c/14d4ac19d1895397532eec407433c5d74d9da53b"
}
],
"title": "scsi: target: Fix recursive locking in __configfs_open_file()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23292",
"datePublished": "2026-03-25T10:26:50.408Z",
"dateReserved": "2026-01-13T15:37:45.992Z",
"dateUpdated": "2026-11-05T21:33:35.930Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.