CVE-2023-52980

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52980
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52980.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52980
Downstream
Published
2025-03-27T16:43:19Z
Modified
2025-10-15T04:56:25.167923Z
Summary
block: ublk: extending queue_size to fix overflow
Details

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 ublkcmd.h, UBLKMAXQUEUEDEPTH 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 ublkqueue) + depth * sizeof(struct ublkio) will be larger than 65535 if qd is larger than 2728. Then queuesize is overflowed, and ublkgetqueue() references a wrong pointer position. The wrong content of ublkqueue elements will lead to out-of-bounds memory access.

Extend queuesize in ublkdevice as "unsigned int".

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
71f28f3136aff5890cd56de78abc673f8393cad9
Fixed
ee1e3fe4b4579f856997190a00ea4db0307b4332
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
71f28f3136aff5890cd56de78abc673f8393cad9
Fixed
29baef789c838bd5c02f50c88adbbc6b955aaf61

Affected versions

v5.*

v5.19
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8

v6.*

v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.1.1
v6.1.10
v6.1.2
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.1.7
v6.1.8
v6.1.9

Database specific 

{
    "vanir_signatures": [
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "drivers/block/ublk_drv.c"
            },
            "id": "CVE-2023-52980-084e5eb8",
            "digest": {
                "line_hashes": [
                    "36133957002069705702728410441705541582",
                    "129265880719326603401388096490435791176",
                    "17503304119524248954153258889049057074",
                    "249475897600195145339823604342241637783"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ee1e3fe4b4579f856997190a00ea4db0307b4332"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "drivers/block/ublk_drv.c"
            },
            "id": "CVE-2023-52980-288ea292",
            "digest": {
                "line_hashes": [
                    "36133957002069705702728410441705541582",
                    "129265880719326603401388096490435791176",
                    "17503304119524248954153258889049057074",
                    "249475897600195145339823604342241637783"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@29baef789c838bd5c02f50c88adbbc6b955aaf61"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0.0
Fixed
6.1.11