CVE-2023-52515Network attack vector

Kernel memory corruption via premature SCSI command completion

Published Mar 2, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel's SRP initiator allows remote attackers controlling an SRP target to crash or corrupt the initiator host. The srp_abort() handler calls scsi_done() before scmd_eh_abort_handler() performs further work on the same command, leaving SCSI paths to reuse freed memory. Reachability requires an active SRP session and attacker-controlled command timeouts and abort completions; failure can panic the kernel or corrupt SCSI state.

CVSS severity9.8
Critical
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel's SRP initiator allows remote attackers controlling an SRP target to crash or corrupt the initiator host. The srp_abort() handler calls scsi_done() before scmd_eh_abort_handler() performs further work on the same command, leaving SCSI paths to reuse freed memory. Reachability requires an active SRP session and attacker-controlled command timeouts and abort completions; failure can panic the kernel or corrupt SCSI state.

The record

CVE
CVE-2023-52515
Published
Mar 2, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0575df129e2eb4a801beae0e6e041787480f42b9
  2. Affected versionversion=22fb582405002812d8fb89d0ed1264e97d3d25ad
  3. Affected versionversion=3.0.45 <3.1
  4. Affected versionversion=3.2.32 <3.3
  5. Affected versionversion=3.4.13 <3.5
  6. Affected versionversion=3.5.6 <3.6
  7. Affected versionversion=3.6.1 <3.7
  8. Affected versionversion=3.7
  9. Affected versionversion=39d6594c457c4728794cb4c3c7be53f93f1ef3ae
  10. Affected versionversion=738589592a04180e39b6fb5fe8205d85b7dc69f6
  11. Affected versionversion=b3f3b814add77a464911df0080d812b18f61ff38
  12. Affected versionversion=d8536670916a685df116b5c2cb256573fd25e4e3 <05a10b316adaac1f322007ca9a0383b410d759cc
  13. Affected versionversion=d8536670916a685df116b5c2cb256573fd25e4e3 <26788a5b48d9d5cd3283d777d238631c8cd7495a
  14. Affected versionversion=d8536670916a685df116b5c2cb256573fd25e4e3 <2b298f9181582270d5e95774e5a6c7a7fb5b1206
  15. Affected versionversion=d8536670916a685df116b5c2cb256573fd25e4e3 <b9bdffb3f9aaeff8379c83f5449c6b42cb71c2b5
  16. Affected versionversion=d8536670916a685df116b5c2cb256573fd25e4e3 <e193b7955dfad68035b983a0011f4ef3590c85eb

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0575df129e2eb4a801beae0e6e041787480f42b9; version=22fb582405002812d8fb89d0ed1264e97d3d25ad; version=3.0.45 <3.1; version=3.2.32 <3.3; version=3.4.13 <3.5; version=3.5.6 <3.6; version=3.6.1 <3.7; version=3.7; version=39d6594c457c4728794cb4c3c7be53f93f1ef3ae; version=738589592a04180e39b6fb5fe8205d85b7dc69f6; version=b3f3b814add77a464911df0080d812b18f61ff38; version=d8536670916a685df116b5c2cb256573fd25e4e3 <05a10b316adaac1f322007ca9a0383b410d759cc; version=d8536670916a685df116b5c2cb256573fd25e4e3 <26788a5b48d9d5cd3283d777d238631c8cd7495a; version=d8536670916a685df116b5c2cb256573fd25e4e3 <2b298f9181582270d5e95774e5a6c7a7fb5b1206; version=d8536670916a685df116b5c2cb256573fd25e4e3 <b9bdffb3f9aaeff8379c83f5449c6b42cb71c2b5; version=d8536670916a685df116b5c2cb256573fd25e4e3 <e193b7955dfad68035b983a0011f4ef3590c85eb

Published CVSS scores

9.8Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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