NVD / CVE Program· CNA Linux

CVE-2023-52493: bus: mhi: host: Drop chan lock before queuing buffers

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 01bd694ac2f682fb8017e16148b928482bc8fa4b, 20a6dea2d1c68d4e03c6bb50bc12e72e226b5c0e, 3c5ec66b4b3f6816f3a6161538672e389e537690.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 01bd694ac2f682fb8017e16148b928482bc8fa4b, 20a6dea2d1c68d4e03c6bb50bc12e72e226b5c0e, 3c5ec66b4b3f6816f3a6161538672e389e537690 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Drop chan lock before queuing buffers Ensure read and write locks for the channel are not taken in succession by dropping the read lock from parse_xfer_event() such that a callback given to client can potentially queue buffers and acquire the write lock in that process. Any queueing of buffers should be done without channel read lock acquired as it can result in multiple locks and a soft lockup. [mani: added fixes tag and cc'ed stable]

Denial of service

Published: Mar 11, 2024
Updated: Jun 17, 2026
EPSS: 0.2% · 11th percentile
CWE: CWE-667

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 5.7affected
- 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 and later · before 20a6dea2d1c68d4e03c6bb50bc12e72e226b5c0eaffected · git
- 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 and later · before 6e4c84316e2b70709f0d00c33ba3358d9fc8eeceaffected · git
- 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 and later · before 3c5ec66b4b3f6816f3a6161538672e389e537690affected · git
- 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 and later · before eaefb9464031215d63c0a8a7e2bfaa00736aa17eaffected · git
- 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 and later · before b8eff20d87092e14cac976d057cb0aea2f1d0830affected · git
- 1d3173a3bae7039b765a0956e3e4bf846dbaacb8 and later · before 01bd694ac2f682fb8017e16148b928482bc8fa4baffected · git
- before 5.7not affected · semver
- 5.10.210 and later · up to and including 5.10.*not affected · semver
- 5.15.149 and later · up to and including 5.15.*not affected · semver

Affected versions · NVD (5)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel5.7 and later · before 5.10.210
linux linux kernel5.11 and later · before 5.15.149
linux linux kernel5.16 and later · before 6.1.76
linux linux kernel6.2 and later · before 6.6.15
linux linux kernel6.7 and later · before 6.7.3

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:10	linux-5.10	before 5.10.216-1~deb10u1	5.10.216-1~deb10u1
Debian:11	linux	before 5.10.216-1	5.10.216-1
Debian:12	linux	before 6.1.76-1	6.1.76-1
Debian:13	linux	before 6.6.15-1	6.6.15-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
90Now
CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
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CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2023-52491Mar 11, 2024 · media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run
31Monitor
← EarlierCVE-2023-52492Mar 11, 2024 · dmaengine: fix NULL pointer in channel unregistration function
17Monitor
Later →CVE-2023-52494Mar 11, 2024 · bus: mhi: host: Add alignment check for event ring read pointer
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	01bd694ac2f682fb8017e16148b928482bc8fa4b	Vendor (CNA)
Linux Linux	20a6dea2d1c68d4e03c6bb50bc12e72e226b5c0e	Vendor (CNA)
Linux Linux	3c5ec66b4b3f6816f3a6161538672e389e537690	Vendor (CNA)
Linux Linux	6e4c84316e2b70709f0d00c33ba3358d9fc8eece	Vendor (CNA)
Linux Linux	b8eff20d87092e14cac976d057cb0aea2f1d0830	Vendor (CNA)
Linux Linux	eaefb9464031215d63c0a8a7e2bfaa00736aa17e	Vendor (CNA)
debian:linux	6.1.76-1 · Debian:12	Package registry (OSV)
debian:linux-5.10	5.10.216-1~deb10u1 · Debian:10	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.