Security readout for executives and security teams
Plain-English summary
This is a Linux kernel memory safety bug in SCSI cleanup. Under certain local storage teardown conditions, the kernel may use freed SCSI host resources. Impact is rated high because kernel memory corruption can affect confidentiality, integrity, and availability, but the source bundle does not show active exploitation.
Executive priority
Treat as high priority for Linux storage infrastructure and shared hosts. There is no cited active exploitation, but kernel-level memory corruption can become severe if reachable in your environment.
Technical view
CVE-2022-48666 is a CWE-416 use-after-free in Linux SCSI core. The bug occurs when .exit_cmd_priv runs after SCSI host resources have been released. The fix makes scsi_remove_host() wait until the block tag set is freed before those resources disappear. The supplied trace involves ib_srp, multipathd, and device-mapper teardown.
Likely exposure
Exposure is limited to affected Linux kernels, especially systems exercising SCSI host removal or multipath storage teardown paths. The bundle lists Linux as affected and provides stable kernel fix commits, but exact deployed-version mapping should be verified against vendor kernel packages.
Exploitation context
The CVSS vector is local, high complexity, no privileges, no user interaction, with high confidentiality, integrity, and availability impact. KEV is false, and the provided sources do not claim active exploitation or public weaponization.
Researcher notes
Evidence supports a SCSI core lifetime bug fixed by waiting for tag-set cleanup in scsi_remove_host(). Version data in the bundle is not sufficient for every distro kernel, so map fixes through vendor backports rather than upstream version numbers alone.
Mitigation direction
- Apply the relevant Linux stable kernel update containing the referenced fix commits.
- Prioritize storage servers, virtualization hosts, and systems using SCSI multipath paths.
- Check your distribution vendor advisory for backported fixes and exact package versions.
- If patching is delayed, monitor kernel logs for SCSI teardown or KASAN use-after-free indicators.
Validation and detection
- Inventory Linux kernel versions across production and storage-adjacent systems.
- Compare running kernels with distribution advisories and the referenced stable commits.
- Review whether hosts use SCSI, device-mapper multipath, or ib_srp-related storage paths.
- Confirm patched systems have rebooted into the fixed kernel.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-48666 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H1.45.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.4HighVector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/5ce8fad941233e81f2afb5b52a3fcddd3ba8732fCVE reference, Linux
- https://git.kernel.org/stable/c/f818708eeeae793e12dc39f8984ed7732048a7d9CVE reference, Linux
- https://git.kernel.org/stable/c/2e7eb4c1e8af8385de22775bd0be552f59b28c9aCVE reference, Linux
- https://git.kernel.org/stable/c/8fe4ce5836e932f5766317cb651c1ff2a4cd0506CVE reference, Linux
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.