CVE-2023-52980

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 following products are affected by CVE-2023-52980 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2023-52980.

URL	Resource
https://git.kernel.org/stable/c/29baef789c838bd5c02f50c88adbbc6b955aaf61
https://git.kernel.org/stable/c/ee1e3fe4b4579f856997190a00ea4db0307b4332
https://lore.kernel.org/linux-cve-announce/2025032705-CVE-2023-52980-0fea@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-52980
https://www.cve.org/CVERecord?id=CVE-2023-52980