Security readout for executives and security teams
Plain-English summary
CVE-2022-50215 is a Linux kernel SCSI generic driver issue. If a SCSI device is removed while commands are still active, userspace can be told the device is gone while the kernel still uses the buffer, risking userspace memory corruption or incorrect data sent to storage.
Executive priority
Treat as a focused storage integrity risk. Prioritize patching storage-heavy Linux hosts, iSCSI environments, and systems where corrupted buffers or writes could affect business-critical data.
Technical view
The sg driver previously returned ENODEV immediately when waiting on pre-removal commands. For SG_FLAG_DIRECT_IO commands, buffers could still be in kernel use after userspace freed or reused them. The fix allows waiting for active sg commands during removal and returns ENODEV only after no responses remain.
Likely exposure
Exposure is most likely on Linux systems using SCSI generic devices with direct I/O during device removal. The source specifically notes this was seen during iscsi_tcp logout. Affected version data is kernel-level and may vary by distribution backports.
Exploitation context
The provided sources do not show active exploitation, public exploit availability, or KEV listing. The issue appears reliability- and integrity-impacting in a specific storage I/O race condition rather than a broadly exposed remote attack path.
Researcher notes
Evidence is limited to the CVE record and kernel stable references. No CVSS, CWE, exploit status, or distribution-specific package matrix is provided. The root condition is a device-removal race around sg command completion and SG_FLAG_DIRECT_IO buffer lifetime.
Mitigation direction
- Apply kernel updates from the relevant Linux distribution or vendor.
- Confirm the vendor kernel includes the referenced stable sg fix.
- Prioritize systems using SCSI generic, direct I/O, or iSCSI workflows.
- Check vendor guidance if no package fix is available.
- Avoid disruptive SCSI or iSCSI removals until patched where operationally feasible.
Validation and detection
- Inventory Linux kernel versions across systems with SCSI or iSCSI usage.
- Check distribution advisories for CVE-2022-50215 remediation status.
- Verify whether workloads use sg devices with direct I/O.
- Review storage logout or device-removal incidents for related corruption symptoms.
- Confirm patched kernels include one of the referenced stable commits.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit bbc118acf7baf9e93c5e1314d14f481301af4d0f
- Linux stable commit f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed
- Linux stable commit ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b
- Linux stable commit f135c65085eed869d10e4e7923ce1015288618da
- Linux stable commit 408bfa1489a3cfe7150b81ab0b0df99b23dd5411
- Linux stable commit 8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8
- Linux stable commit 35e60ec39e862159cb92923eefd5230d4a873cb9
- Linux stable commit 03d8241112d5e3cccce1a01274a221099f07d2e1
- Linux stable commit 3455607fd7be10b449f5135c00dc306b85dc0d21
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.
CVE-2022-50215 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
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.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0fCVE reference, Linux
- https://git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92edCVE reference, Linux
- https://git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16bCVE reference, Linux
- https://git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618daCVE reference, Linux
- https://git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411CVE reference, Linux
- https://git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8CVE reference, Linux
- https://git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9CVE reference, Linux
- https://git.kernel.org/stable/c/03d8241112d5e3cccce1a01274a221099f07d2e1CVE reference, Linux
- https://git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21CVE 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.