Security readout for executives and security teams
Plain-English summary
CVE-2022-49384 is a Linux kernel memory-management flaw in the md RAID subsystem. A local low-privileged user could potentially use the bug to compromise confidentiality, integrity, or availability. This is not described as remotely exploitable, and the supplied sources do not show active exploitation.
Executive priority
Patch during the next high-priority Linux maintenance window, faster for shared or multi-user systems. This is high impact if abused locally, but the supplied evidence does not support internet-scale or actively exploited urgency.
Technical view
The issue is a CWE-415 double free involving the md subsystem's io_acct_set bioset. The fix removes freeing from md_free and md_stop because io_acct_set allocation and release now occur in personality code. CVSS 3.1 is 7.8: local attack vector, low complexity, low privileges, no user interaction, high CIA impact.
Likely exposure
Exposure is most likely on Linux systems running affected kernels that include or use the md multiple-device RAID subsystem. Business risk is higher on shared systems, build hosts, bastions, or any Linux estate where non-administrative users can run local code.
Exploitation context
The provided CVE data marks KEV as false and gives no cited evidence of exploitation in the wild. The CVSS vector indicates local exploitation requiring low privileges and no user interaction. Treat it as a serious local privilege-impact vulnerability, not a network-facing emergency based on current evidence.
Researcher notes
Focus review on md subsystem lifecycle handling around io_acct_set and kernel versions carrying the referenced stable commits. The source bundle does not provide exploit details, distro-specific fixed package versions, or evidence of active exploitation.
Mitigation direction
- Inventory Linux systems and appliances running affected kernel versions.
- Apply kernel or distribution updates containing the referenced stable fixes.
- Prioritize shared hosts and systems with untrusted local users.
- Follow vendor guidance if no patched package is available.
- Reboot hosts into the updated kernel after patching.
Validation and detection
- Confirm running kernel version and vendor patch level on Linux assets.
- Check distro advisories for CVE-2022-49384 or referenced stable commits.
- Verify patched hosts have rebooted into the fixed kernel.
- Review whether exposed systems allow non-administrative local code execution.
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-415: 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-2022-49384 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/36a2fc44c574a59ee3b5e2cb327182f227b2b07eCVE reference, Linux
- https://git.kernel.org/stable/c/f99d5b5dc8a42c807b5f1176b925aa45d61962abCVE reference, Linux
- https://git.kernel.org/stable/c/ea7d7bd90079d96f9c86bdaf0b106e0cd2a70661CVE reference, Linux
- https://git.kernel.org/stable/c/42b805af102471f53e3c7867b8c2b502ea4eef7eCVE 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.
Double Free
Double Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.