Security readout for executives and security teams
Plain-English summary
A Linux Wi-Fi driver cleanup flaw can access memory after it has been freed when WILC1000 interfaces are removed or registration fails. This may crash or corrupt an affected system. The supplied CVSS score is 7.8, but exposure is limited to systems using the relevant driver and cleanup path.
Executive priority
Treat as a high-priority targeted kernel update for affected WILC1000-based systems, not an estate-wide emergency without exposure evidence. Quickly identify embedded products using this Wi-Fi chipset, then follow supported vendor updates. Escalate systems where local access or repeated driver removal is plausible.
Technical view
The wilc1000 driver traversed its virtual-interface list while unregistering network devices, which also freed associated interface objects. A later loop iteration could dereference a freed pointer. The kernel fix safely traverses and removes list entries, then waits for an RCU grace period before freeing each interface.
Likely exposure
Most relevant to Linux systems containing and using the WILC1000 Wi-Fi driver, particularly embedded devices. The fault is observable during interface-registration failure, module removal, or device unbinding. The supplied affected-version data spans Linux 5.5 through listed stable releases, but exact distribution exposure requires vendor mapping.
Exploitation context
The supplied CVSS vector describes local, low-privilege attack conditions with no user interaction and potentially high confidentiality, integrity, and availability impact. However, the bundle provides no demonstrated privilege escalation or reliable exploitation. It is not in KEV, and no cited evidence establishes active exploitation.
Researcher notes
The failure is a slab use-after-free in wilc_netdev_cleanup caused by unregister_netdev freeing netdevice-private vif data during list traversal. The fix combines safe traversal, list removal, and RCU synchronization. The sources establish the bug and remediation design, but do not establish exploit reliability, weaponization, or observed attacks.
Mitigation direction
- Install a vendor-supported kernel containing the applicable stable wilc1000 fix.
- Consult distribution or device-vendor guidance for exact fixed package versions.
- Prioritize embedded systems where WILC1000 hardware and driver lifecycle operations are present.
- Restrict unnecessary local access and administrative device-management capabilities until patched.
Validation and detection
- Inventory kernel versions and determine whether the wilc1000 driver is present or loaded.
- Confirm whether devices use WILC1000 Wi-Fi hardware through asset and platform records.
- Map vendor kernel packages to the referenced stable fixes, accounting for backports.
- Review kernel logs for wilc_netdev_cleanup, KASAN, or use-after-free reports.
- After updating, verify the vendor package includes the relevant fix.
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
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CVE-2024-26895 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:H1.85.9LinuxVulnerability 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/5956f4203b6cdd0755bbdd21b45f3933c7026208CVE reference, Linux
- https://git.kernel.org/stable/c/fe20e3d56bc911408fc3c27a17c59e9d7885f7d1CVE reference, Linux
- https://git.kernel.org/stable/c/a9545af2a533739ffb64d6c9a6fec6f13e2b505fCVE reference, Linux
- https://git.kernel.org/stable/c/3da9d32b7f4a1a9f7e4bb15bb82f2b2dd6719447CVE reference, Linux
- https://git.kernel.org/stable/c/24228dcf1d30c2231caa332be7d3090ac59fbfe9CVE reference, Linux
- https://git.kernel.org/stable/c/73a2aa0aef86c2c07be5a2f42c9e6047e1a2f7bbCVE reference, Linux
- https://git.kernel.org/stable/c/cb5942b77c05d54310a0420cac12935e9b6aa21cCVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlCVE reference, siemens-SADP
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.