Security readout for executives and security teams
Plain-English summary
A Linux Binder cleanup flaw can leave queued work pointing to freed memory. A local, low-privileged user could potentially trigger memory corruption, causing system compromise or disruption. The supplied CVSS score is 7.8 (High), but the sources do not establish real-world exploitation.
Executive priority
Treat as a high-priority local privilege and stability risk, especially where untrusted users or applications can access Binder. Patch during the next expedited maintenance cycle. Escalate systems with broad local access, while recognizing that the supplied evidence does not show active exploitation.
Technical view
CVE-2024-56554 is a CWE-416 use-after-free in binder_release_work(). Binder reference cleanup could free a reference without removing its queued freeze work from the process work list. Later worker processing could access the freed object. The cited fix removes queued freeze work during reference cleanup.
Likely exposure
Exposure requires a vulnerable Linux kernel containing the affected Binder code and local low-privileged access. The supplied version data references 6.12, 6.12.4, and 6.13 but is ambiguous; verify each distribution kernel by backport status rather than version alone.
Exploitation context
The CVSS vector indicates local access, low complexity, low privileges, and no user interaction, with potentially high confidentiality, integrity, and availability impact. This CVE is not listed as KEV in the supplied bundle, and no cited source confirms active exploitation or a public weaponized exploit.
Researcher notes
The source includes a KASAN slab-use-after-free report from deferred Binder work on arm64. Root cause and repair are narrowly described: remove freeze work queued on proc->work when releasing its Binder reference. Exact affected release boundaries and exploitability beyond the demonstrated memory error are not fully established in the bundle.
Mitigation direction
- Install a vendor-supported kernel update containing the cited Binder cleanup fix.
- Confirm the update applies to the running kernel, including distribution-specific backports.
- Restrict unnecessary local account and application access until affected systems are updated.
- Prioritize Binder-enabled multi-user or untrusted-application systems for remediation.
Validation and detection
- Inventory running kernel builds on systems where Linux Binder is enabled or used.
- Check vendor advisories or kernel changelogs for either cited fix commit or an equivalent backport.
- Verify the patched kernel is running after maintenance, not merely installed.
- Review kernel crash and memory-safety telemetry for Binder-related use-after-free symptoms.
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-2024-56554 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
2 official scoresWe 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:H1.85.9LinuxCVSS: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
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/fe39e0ea2d0ba7f508ff453c4c9a44a95ec0de29CVE reference, Linux
- https://git.kernel.org/stable/c/7e20434cbca814cb91a0a261ca0106815ef48e5fCVE 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.