Security readout for executives and security teams
Plain-English summary
CVE-2022-49414 is a Linux kernel ext4 race condition that can crash affected systems. A local low-privileged actor can trigger availability impact only; the published CVSS indicates no confidentiality or integrity impact. It is not listed as KEV in the supplied data.
Executive priority
Treat as a routine but real availability risk. Patch through normal kernel maintenance, faster for multi-user, shared compute, CI, container host, or hosting environments where local workload isolation matters.
Technical view
The flaw is a CWE-362 race between ext4_write and ext4_convert_inline_data. Different locks, xattr_sem and i_rwsem, allowed concurrent paths that could reach a NULL or zero journal handle and BUG_ON in ext4_jbd2.c. The kernel fix adds inode_lock around ext4_convert_inline_data handling.
Likely exposure
Exposure is most relevant to Linux systems using ext4 on affected kernel versions or downstream builds lacking the stable fixes. The vector is local, requires low privileges, and has high attack complexity.
Exploitation context
The source bundle describes a syzkaller-style crash trace and race scenario, not active exploitation. KEV is false, and no cited source states exploitation in the wild.
Researcher notes
The evidence supports local denial of service through an ext4 race, with CVSS 4.7 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H. The bundle does not provide affected distro package names, exploit maturity, or non-upstream mitigation detail.
Mitigation direction
- Update to a kernel or distro package containing the referenced ext4 stable fixes.
- Check Linux distribution security guidance for backported CVE-2022-49414 status.
- Limit untrusted local access on affected systems until patched.
- Prioritize hosts where local users or workloads can write to ext4 filesystems.
Validation and detection
- Inventory Linux kernel versions and ext4 filesystem usage across managed hosts.
- Map distro kernel packages to CVE-2022-49414 or the referenced stable commits.
- Review kernel logs for EXT4-fs errors, BUG_ON, or related crash traces.
- Confirm patched systems no longer match affected kernel package advisories.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit 18881d7e517169193d9ef6c89c7f322e3e164277
- Linux stable commit 91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3d
- Linux stable commit 14602353b350950b551eccc6b46411aa3b12ffe2
- Linux stable commit 725e00cb7039eae291890f1bb19bc867176745f6
- Linux stable commit ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32
- Linux stable commit f87c7a4b084afc13190cbb263538e444cb2b392a
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-362: 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-2022-49414 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
- Medium
- CVSS
- 4.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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:L/UI:N/S:U/C:N/I:N/A:H13.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
4.7MediumVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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/18881d7e517169193d9ef6c89c7f322e3e164277CVE reference, Linux
- https://git.kernel.org/stable/c/91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3dCVE reference, Linux
- https://git.kernel.org/stable/c/14602353b350950b551eccc6b46411aa3b12ffe2CVE reference, Linux
- https://git.kernel.org/stable/c/725e00cb7039eae291890f1bb19bc867176745f6CVE reference, Linux
- https://git.kernel.org/stable/c/ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32CVE reference, Linux
- https://git.kernel.org/stable/c/f87c7a4b084afc13190cbb263538e444cb2b392aCVE 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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.