CVE-2023-52980 (GCVE-0-2023-52980)

Vulnerability from cvelistv5 – Published: 2025-03-27 16:43 – Updated: 2025-05-04 07:46
VLAI?
Summary
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".
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 71f28f3136aff5890cd56de78abc673f8393cad9 , < ee1e3fe4b4579f856997190a00ea4db0307b4332 (git)
Affected: 71f28f3136aff5890cd56de78abc673f8393cad9 , < 29baef789c838bd5c02f50c88adbbc6b955aaf61 (git)
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    Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.11 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2025-03-27T16:40:15.740Z",
    "dateUpdated": "2025-05-04T07:46:45.012Z",
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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