CVE-2026-23087 Details
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: xen: scsiback: Fix potential memory leak in scsiback_remove() Memory allocated for struct vscsiblk_info in scsiback_probe() is not freed in scsiback_remove() leading to potential memory leaks on remove, as well as in the scsiback_probe() error paths. Fix that by freeing it in scsiback_remove().
A memory leak vulnerability has been identified in the Linux kernel's Xen SCSI backend driver. The issue arises because memory allocated for the 'vscsiblk_info' structure during the 'scsiback_probe()' function is not released in the 'scsiback_remove()' function. This oversight can lead to memory leaks when the driver is removed, as well as during error handling in the 'scsiback_probe()'' function. The vulnerability affects the Linux kernel stable tree.
The vulnerability has been addressed by modifying the 'scsiback_remove()' function to include a call to free the allocated memory for the 'vscsiblk_info' structure. Users should apply the latest patches available in the Linux kernel stable tree to mitigate this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert-portal.siemens.com/productcert/html/ssa-019113.html | siemens-SADP | |
| https://git.kernel.org/stable/c/24c441f0e24da175d7912095663f526ac480dc4f | kernel.org | Patch |
| https://git.kernel.org/stable/c/32e52b56056daf0f0881fd9254706acf25b4be97 | kernel.org | Patch |
| https://git.kernel.org/stable/c/427b0fb30ddec3bad05dcd73b00718f98c7026d2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/4a975c72429b050c234405668b742cdecc11548e | kernel.org | Patch |
| https://git.kernel.org/stable/c/901a5f309daba412e2a30364d7ec1492fa11c32c | kernel.org | Patch |
| https://git.kernel.org/stable/c/a8bb3ec8d85951a56af0a72d93ccbc2aee42eef9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f86264ec0e2b102fcd49bf3e4f32fee669d482fc | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.18, < 5.10.249 >= 5.11, < 5.15.199 >= 5.16, < 6.1.162 >= 6.2, < 6.6.122 >= 6.7, < 6.12.68 >= 6.13, < 6.18.8 6.19 rc1 6.19 rc2 6.19 rc3 6.19 rc4 6.19 rc5 6.19 rc6 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | CVE Modified | siemens-SADP |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Mar 17, 2026 | Initial Analysis | [email protected] |
| Feb 6, 2026 | CVE Modified | kernel.org |
| Feb 4, 2026 | New CVE Received | kernel.org |