scsi: target: Fix recursive locking in __configfs_open_file()
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.
CVE-2026-23292
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-23292
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"lessThan": "3161ef61f121d4573cad5b57c92188dcd9b284b3",
"versionType": "git"
},
{
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"lessThan": "e8ef82cb6443d5f3260b1b830e17f03dda4229ea",
"versionType": "git"
},
{
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"lessThan": "4fcfa424a581d823cb1a9676e3eefe6ca17e453a",
"versionType": "git"
},
{
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"lessThan": "9a5641024fbfd9b24fe65984ad85fea10a3ae438",
"versionType": "git"
},
{
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"lessThan": "142eacb50fb903a4c10dee7e67b6e79ebb36a582",
"versionType": "git"
},
{
"status": "affected",
"version": "b0841eefd9693827afb9888235e26ddd098f9cef",
"lessThan": "14d4ac19d1895397532eec407433c5d74d9da53b",
"versionType": "git"
},
{
"status": "affected",
"version": "49824b5c875087a52672b0c8e8ecbefe6f773532",
"versionType": "git"
},
{
"status": "affected",
"version": "09e21253d17f53bdb5aac0e0dbd057a29fcbe8d1",
"versionType": "git"
},
{
"status": "affected",
"version": "0dfc45be875a378c2a3a4d6ed8e668ec8eb75073",
"versionType": "git"
},
{
"status": "affected",
"version": "4.9.201",
"lessThan": "4.10",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.14.154",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.84",
"lessThan": "4.20",
"versionType": "semver"
}
],
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/target/target_core_configfs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23292
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27215 · Revision 1
- Added to Heist Feed
- Publisher date