Security readout for executives and security teams
Plain-English summary
CVE-2022-3303 is a Linux kernel sound subsystem bug that can let a local privileged user crash a machine. It is not described as remote code execution or data theft. The business impact is availability: affected shared systems, workstations, or servers with local user access could be forced into denial of service.
Executive priority
Treat this as a routine but real availability issue. It does not justify emergency response unless exposed systems support critical operations or many local users. Include it in normal kernel patch cycles, with faster handling for shared or business-critical Linux assets.
Technical view
The flaw is a race condition from improper locking in the Linux kernel sound subsystem. While handling the SNDCTL_DSP_SYNC ioctl, the race can cause a NULL pointer dereference. The CVSS vector is local, high complexity, low privileges, no user interaction, with high availability impact only.
Likely exposure
Exposure is mainly Linux systems running affected kernel builds before the relevant fix or without vendor backports. Risk is higher where non-administrative local users have shell access or membership in the audio group. Exact affected version boundaries are not fully stated in the bundle.
Exploitation context
The provided sources do not show active exploitation, and KEV is false. Exploitation requires local privileges and race-condition timing. The expected outcome is a system crash, not privilege escalation or data compromise, based on the supplied description and CVSS impact.
Researcher notes
Evidence supports a local denial-of-service condition in the Linux kernel sound subsystem. The bundle names the upstream fix and Debian updates, but does not provide a complete affected-version matrix across all distributions. Validate vendor backports and package advisories rather than assuming upstream version numbers are definitive.
Mitigation direction
- Apply Linux kernel security updates from the system vendor or distribution.
- Confirm Debian systems include the DSA-5257 or DLA-3173-1 fixes where applicable.
- Use kernels containing the upstream fix, noted as fixed in 6.0-rc5.
- Review and limit unnecessary local shell access or audio group membership.
- Check vendor guidance for supported backported fixes before relying on kernel version alone.
Validation and detection
- Inventory Linux hosts and record running kernel and distribution package versions.
- Map each host against vendor advisories for CVE-2022-3303 coverage.
- Verify whether kernel packages include the upstream sound subsystem locking fix.
- Review local privileged users and audio group members on multi-user systems.
- Prioritize validation on shared workstations, jump hosts, and systems with audio devices enabled.
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-667: Exact CWE lookup
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Open ATT&CK lookupCVE-2022-3303 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.
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:H13.6Primary CVE scoreVulnerability 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
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8423f0b6d513b259fdab9c9bf4aaa6188d054c2dCVE reference
- https://lore.kernel.org/all/CAFcO6XN7JDM4xSXGhtusQfS2mSBcx50VJKwQpCq=WeLt57aaZA%40mail.gmail.com/CVE reference
- DSA-5257CVE reference · vendor-advisory
- [debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security updateCVE reference · mailing-list
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.
Improper Locking
Improper Locking represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.