Security readout for executives and security teams
Plain-English summary
This Linux kernel flaw is a use-after-free bug in driver attachment failure handling. A local low-privileged user may be able to trigger kernel memory corruption with high confidentiality, integrity, and availability impact. It is not described as remotely exploitable in the provided sources.
Executive priority
Treat as high priority for Linux fleets with local users or untrusted workloads. It is less urgent than remotely exploitable KEV-listed issues, but kernel memory corruption can materially affect host isolation and service reliability.
Technical view
When driver_attach(drv) fails, driver_private can be freed while still linked to the bus, creating a use-after-free condition. The kernel fix removes it from the bus on failure. The CVSS vector is local, low complexity, low privileges, no user interaction, with high CIA impact.
Likely exposure
Exposure is most relevant on systems running affected Linux kernel versions, especially shared servers, developer workstations, container hosts, and environments where low-privileged local users or workloads can execute code.
Exploitation context
The provided bundle marks CISA KEV as false and gives no cited evidence of active exploitation. Exploitation requires local low-privileged access; remote-only exposure is not supported by the supplied sources.
Researcher notes
The source evidence identifies CWE-416 and stable kernel commits but does not provide exploit details or clear distro package mappings. Validation should focus on kernel provenance, branch backports, and whether local attack preconditions exist.
Mitigation direction
- Apply Linux kernel updates containing the referenced stable fixes.
- Use distribution vendor advisories to map fixes to packaged kernel versions.
- Prioritize multi-user, container, and externally managed workload hosts.
- Restrict untrusted local shell or workload access where patching is delayed.
- Monitor vendor guidance if no packaged fix is available.
Validation and detection
- Inventory Linux kernel versions across servers, workstations, and images.
- Compare running kernels with vendor advisories for CVE-2022-49385.
- Confirm patched builds include the referenced stable kernel commits.
- Review high-risk hosts allowing local untrusted code execution.
- Verify reboot into the updated kernel after patch deployment.
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-2022-49385 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/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:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/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/5d709f58c743166fe1c6914b9de0ae8868600d9bCVE reference, Linux
- https://git.kernel.org/stable/c/823f24f2e329babd0330200d0b74882516fe57f4CVE reference, Linux
- https://git.kernel.org/stable/c/cdf1a683a01583bca4b618dd16223cbd6e462e21CVE reference, Linux
- https://git.kernel.org/stable/c/5389101257828d1913d713d9a40acbe14f5961dfCVE reference, Linux
- https://git.kernel.org/stable/c/c059665c84feab46b7173d3a1bf36c2fb7f9df86CVE reference, Linux
- https://git.kernel.org/stable/c/310862e574001a97ad02272bac0fd13f75f42a27CVE 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.