In the Linux kernel, the following vulnerability has been resolved: block: ublk: extending queue_size to fix overflow When validating drafted SPDK ublk target, in a case that assigning large queue depth to multiqueue ublk device, ublk target would run into a weird incorrect state. During rounds of review and debug, An overflow bug was found in ublk driver. In ublk_cmd.h, UBLK_MAX_QUEUE_DEPTH is 4096 which means each ublk queue depth can be set as large as 4096. But when setting qd for a ublk device, sizeof(struct ublk_queue) + depth * sizeof(struct ublk_io) will be larger than 65535 if qd is larger than 2728. Then queue_size is overflowed, and ublk_get_queue() references a wrong pointer position. The wrong content of ublk_queue elements will lead to out-of-bounds memory access. Extend queue_size in ublk_device as "unsigned int".

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013507 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    block: ublk: extending queue_size to fix overflow

    When validating drafted SPDK ublk target, in a case that     assigning large queue depth to multiqueue ublk device,     ublk target would run into a weird incorrect state. During     rounds of review and debug, An overflow bug was found     in ublk driver.

    In ublk_cmd.h, UBLK_MAX_QUEUE_DEPTH is 4096 which means     each ublk queue depth can be set as large as 4096. But     when setting qd for a ublk device,     sizeof(struct ublk_queue) + depth * sizeof(struct ublk_io)     will be larger than 65535 if qd is larger than 2728.
    Then queue_size is overflowed, and ublk_get_queue()     references a wrong pointer position. The wrong content of     ublk_queue elements will lead to out-of-bounds memory     access.

    Extend queue_size in ublk_device as unsigned int.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011323 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    block: ublk: extending queue_size to fix overflow

    When validating drafted SPDK ublk target, in a case that     assigning large queue depth to multiqueue ublk device,     ublk target would run into a weird incorrect state. During     rounds of review and debug, An overflow bug was found     in ublk driver.

    In ublk_cmd.h, UBLK_MAX_QUEUE_DEPTH is 4096 which means     each ublk queue depth can be set as large as 4096. But     when setting qd for a ublk device,     sizeof(struct ublk_queue) + depth * sizeof(struct ublk_io)     will be larger than 65535 if qd is larger than 2728.
    Then queue_size is overflowed, and ublk_get_queue()     references a wrong pointer position. The wrong content of     ublk_queue elements will lead to out-of-bounds memory     access.

    Extend queue_size in ublk_device as unsigned int.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: block: ublk: extending queue_size to     fix overflow When validating drafted SPDK ublk target, in a case that assigning large queue depth to     multiqueue ublk device, ublk target would run into a weird incorrect state. During rounds of review and     debug, An overflow bug was found in ublk driver. In ublk_cmd.h, UBLK_MAX_QUEUE_DEPTH is 4096 which means     each ublk queue depth can be set as large as 4096. But when setting qd for a ublk device, sizeof(struct     ublk_queue) + depth * sizeof(struct ublk_io) will be larger than 65535 if qd is larger than 2728. Then     queue_size is overflowed, and ublk_get_queue() references a wrong pointer position. The wrong content of     ublk_queue elements will lead to out-of-bounds memory access. Extend queue_size in ublk_device as     unsigned int. (CVE-2023-52980)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
309606	Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013507)	Nessus	Unity Linux Local Security Checks	high
308690	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-011323)	Nessus	Unity Linux Local Security Checks	high
244701	Linux Distros Unpatched Vulnerability : CVE-2023-52980	Nessus	Misc.	high

Detections

Analytics

CVE-2023-52980

high

Tenable Plugins

high

high

high