Security readout for executives and security teams
Plain-English summary
CVE-2022-49527 is a Linux kernel null pointer dereference in the Venus media HFI cleanup path. A local low-privileged user could cause a denial of service if the affected code path is reachable. There is no source evidence of active exploitation. Business urgency is moderate and mainly availability-focused.
Executive priority
Handle through normal kernel patch maintenance, with faster action for multi-user systems or devices where local users can trigger media driver paths. This is not currently supported by sources as an internet-exposed or actively exploited issue.
Technical view
The bug occurs when venus_probe fails at pm_runtime_put_sync. Error handling calls hfi_destroy, which sets core->ops to NULL, then hfi_core_deinit may try to call core_deinit through that NULL pointer. Kernel stable fixes avoid the deinit call when necessary. CVSS is 5.5: local, low complexity, low privileges, availability impact only.
Likely exposure
Exposure is limited to Linux systems running affected kernel versions with the Venus media HFI driver path present and reachable. The source lists Linux kernel versions including 4.13 through 5.19 context, but exact distro exposure depends on vendor backports and kernel configuration.
Exploitation context
The CVSS vector requires local access and low privileges, with no user interaction. Impact is denial of service, not confidentiality or integrity. The CVE is not listed as KEV in the provided data, and no cited source states active exploitation.
Researcher notes
The public record describes a resolved Linux kernel CWE-476 null dereference in media/venus HFI deinit error handling. Affected-version mapping is not fully precise for downstream distributions, so validation should rely on vendor kernel advisories and commit/backport checks, not version numbers alone.
Mitigation direction
- Apply kernel updates containing the referenced stable fixes or distro backports.
- Check your Linux vendor’s advisory for exact fixed package versions.
- Prioritize shared, multi-user, or appliance environments where local users are less trusted.
- If updates are delayed, follow vendor guidance for reducing exposure to the affected driver path.
Validation and detection
- Inventory running kernel versions across Linux assets.
- Check vendor advisories for CVE-2022-49527 fixed builds or backports.
- Verify whether the Venus media driver is built or loaded where relevant.
- Confirm installed kernels include one of the referenced stable fixes or equivalent backport.
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-476: 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-2022-49527 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/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:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/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/2533acb652359c9e097dfa33587896af782e8a91CVE reference, Linux
- https://git.kernel.org/stable/c/a21d15dde21d7e8ae047eb8368677407db45d840CVE reference, Linux
- https://git.kernel.org/stable/c/0ac84ab50712879eac3c1dd2598440652a85d3d0CVE reference, Linux
- https://git.kernel.org/stable/c/27ad46da44177a78a4a0cae6fe03906888c61aa1CVE reference, Linux
- https://git.kernel.org/stable/c/9c385b961d4c378228e80f6abea8509cb67feab6CVE reference, Linux
- https://git.kernel.org/stable/c/0ed5a643b1a4a46b9b7bfba5d468c10cc30e1359CVE reference, Linux
- https://git.kernel.org/stable/c/b73ed0510bb8d9647cd8e8a4c4c8772bbe545c3aCVE reference, Linux
- https://git.kernel.org/stable/c/86594f6af867b5165d2ba7b5a71fae3a5961e56cCVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.