CVE-2026-80691

A flaw was found in the Linux kernel's SCSI target iblock module. A missing null pointer check in the iblockexecuteprout function, specifically for the ops-prclear callback during PREEMPT and RELEASE operations, allows unimplemented hooks to be called. This can lead to dereferencing a null functi...

Linux Distros Unpatched Vulnerability : CVE-2026-80691

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE In the iblockexecuteprout function, PROPREEMPT, PROPREEMPTANDABORT, and PRORELEASE all...

UBUNTU-CVE-2026-80691

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE In the iblockexecuteprout function, PROPREEMPT, PROPREEMPTANDABORT, and PRORELEASE all perform callback capability checks through ops-prclear. The error check...

CVE-2026-80691

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE In the iblockexecuteprout function, PROPREEMPT, PROPREEMPTANDABORT, and PRORELEASE all perform callback capability checks through ops-prclear. The error check...

CVE-2026-80691

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE In the iblockexecuteprout function, PROPREEMPT, PROPREEMPTANDABORT, and PRORELEASE all perform callback capability checks through ops-prclear. The error check...

CVE-2026-80691

CVE-2026-80691 is a NULL pointer dereference in the Linux kernel SCSI target iblock subsystem . In iblock_execute_pr_out(), the PRO_PREEMPT , PRO_PREEMPT_AND_ABORT , and PRO_RELEASE operations perform capability checks through ops->pr_clear; the flawed check allows unimplemented hooks to pass,...

EUVD-2026-67426

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE In the iblockexecuteprout function, PROPREEMPT, PROPREEMPTANDABORT, and PRORELEASE all perform callback capability checks through ops-prclear. The error check...

CVE-2026-80691 scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE In the iblockexecuteprout function, PROPREEMPT, PROPREEMPTANDABORT, and PRORELEASE all perform callback capability checks through ops-prclear. The error check...

CVE-2026-80691 scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE In the iblockexecuteprout function, PROPREEMPT, PROPREEMPTANDABORT, and PRORELEASE all perform callback capability checks through ops-prclear. The error check...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098736)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098736 advisory. In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fix recursive locking in configfsopenfile In flushwritebuffer, &p-fragsem is acquir...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098792)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098792 advisory. In the Linux kernel, the following vulnerability has been resolved: scsi: target: configfs: Bound snprintf return in tgptgpmembersshow targettgptgpmembersshow format...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: target: The ttaskcdb pointer is reset in the error case. If the allocation of cmd-ttaskcdb fails, it remains NULL, but it is later referenced in the ‘err’ path. In case of an error, the NULL ttaskcdb value is reset to point...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fixed the crash that occurred when using WRITESAME without a data buffer. In the newer versions of the SBC specifications, there’s a NDOB bit that indicates that there is no data buffer being written. If this bit is...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmloop: Fixed a segfault in tcmlooptpgaddressshow If the allocation of tlhba-sh fails in tcmloopdriverprobe, and we attempt to dereference it in tcmlooptpgaddressshow, we will encounter a segfault. See below for an...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: scsi: target: iscsi: Fixed a timeout issue related to deleted connections. The NOPIN response timer may expire when a connection is deleted, potentially causing crashes with the following log messages: “Did not receive a...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: target: core: Fixed the nullptrderef issue in targetallocdevice There is a nullptrderef issue reported by KASAN: BUG: KASAN: nullptrderef in targetallocdevice+0xbc4/0xbe0 targetcoremod … kasanreport+0xb9/0xf0...

Astra Linux – Vulnerabilities in Linux, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsit: Commands from recovery entries are freed after a session is closed. This leads to a use-after-free when the commands are freed, or a NPE Non-Programmable Error can occur with such a call trace: Time2Retain...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: A buffer overflow has been fixed in the liootargetnaclinfoshow function. The function liootargetnaclinfoshow uses sprintf within a loop to print details for each iSCSI connection in a session, without checkin...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: scsi: target: core: Fix targetcmdcounter leak The targetcmdcounter structure, which is allocated using targetalloccmdcounter, is never freed, resulting in leaks across various transport types. For example: - Unreferenced objec...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmloop: The “Drain commands” step in the targetreset handler is not properly executed. The tcmlooptargetreset function violates the SCSI EH contract: it returns SUCCESS without draining any ongoing commands. The SC...