Security readout for executives and security teams
Plain-English summary
CVE-2022-49474 is a Linux kernel Bluetooth flaw. A local low-privileged user can trigger a race in SCO socket connection handling that may cause use-after-free memory corruption. The CVSS rating is high because successful exploitation could affect confidentiality, integrity, and availability on an affected host.
Executive priority
Prioritize remediation where untrusted local users, shared access, or Bluetooth-enabled Linux endpoints exist. Internet-facing exposure is not indicated by the source bundle, but local kernel flaws can still become serious in chained attacks.
Technical view
The issue is a CWE-416 use-after-free in Linux Bluetooth SCO handling. Repeated sco_sock_connect() calls can create a dangling sco_conn whose timer is not canceled when the socket closes. The sco_sock_timeout() callback can later access freed socket memory. Kernel stable commits are listed as fixes.
Likely exposure
Exposure is most relevant on Linux systems running affected kernel versions with Bluetooth/SCO functionality present. The source lists Linux kernel version ranges and stable fix commits, but distribution-specific package backport status must be verified with each vendor.
Exploitation context
The CVSS vector is local, low complexity, low privileges, and no user interaction. The bundle does not show CISA KEV listing or any cited evidence of active exploitation. Treat this as a local privilege-risk kernel memory corruption issue, not a confirmed exploited-in-the-wild vulnerability.
Researcher notes
The provided evidence supports a Bluetooth SCO race leading to dangling sco_conn and timer callback use-after-free. Affected-version data in the bundle is not enough to map every distro package precisely. Validate through vendor advisories, kernel changelogs, and the referenced stable commits.
Mitigation direction
- Apply vendor Linux kernel updates that include the referenced stable fixes.
- Verify distro backport advisories before relying on upstream version numbers alone.
- Where vendor-approved, disable unused Bluetooth functionality until patched.
- Prioritize shared workstations, developer machines, and multi-user Linux servers.
- Track kernel reboot completion after patch deployment.
Validation and detection
- Inventory Linux kernel versions across endpoints and servers.
- Check whether Bluetooth modules or services are present and enabled.
- Compare installed kernels against vendor advisories and referenced stable commits.
- Confirm patched hosts have rebooted into the updated kernel.
- Review vulnerability scanner findings for distro-specific backport awareness.
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-2022-49474 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/9de3dc09e56f8deacd2bdbf4cecb71e11a312405CVE reference, Linux
- https://git.kernel.org/stable/c/7d61dbd7311ab978d8ddac1749a758de4de00374CVE reference, Linux
- https://git.kernel.org/stable/c/390d82733a953c1fabf3de9c9618091a7a9c90a6CVE reference, Linux
- https://git.kernel.org/stable/c/6f55fac0af3531cf60d11369454c41f5fc81ab3fCVE reference, Linux
- https://git.kernel.org/stable/c/36c644c63bfcaee2d3a426f45e89a9cd09799318CVE reference, Linux
- https://git.kernel.org/stable/c/65d347cb39e2e6bd0c2a745ad7c928998ebb0162CVE reference, Linux
- https://git.kernel.org/stable/c/537f619dea4e3fa8ed1f8f938abffe3615794bccCVE reference, Linux
- https://git.kernel.org/stable/c/99df16007f4bbf9abfc3478cb17d10f0d7f8906eCVE reference, Linux
- https://git.kernel.org/stable/c/7aa1e7d15f8a5b65f67bacb100d8fc033b21efa2CVE 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.