Security readout for executives and security teams
Plain-English summary
CVE-2023-53315 is a Linux kernel Wi-Fi driver flaw that can corrupt memory and crash the system. It affects the ath11k driver path when an invalid receive descriptor is processed during long-running traffic. The documented impact is availability loss, not data theft or privilege escalation.
Executive priority
Treat this as a moderate availability risk for affected Linux Wi-Fi devices. It is most urgent where wireless uptime matters, such as managed access points, embedded systems, or edge devices. No source indicates active exploitation.
Technical view
In ath11k RX processing, a zeroed REO destination ring descriptor could cause buffer ID 0 to fetch the wrong SKB from IDR, leading to SKB memory corruption and a kernel crash. The fix reserves buffer ID 0, starts allocations at 1, and validates descriptors before SKB processing.
Likely exposure
Exposure is most likely on Linux systems using the ath11k Wi-Fi driver, especially Qualcomm hardware matching the tested IPQ8074 context. The source lists affected Linux kernel version data and stable kernel commits, but distro-specific package status is not provided.
Exploitation context
The CVSS vector is local, low complexity, low privileges, no user interaction, with high availability impact. The source bundle says KEV is false and provides no evidence of active exploitation or public weaponization.
Researcher notes
The evidence supports a kernel crash caused by invalid RX descriptor handling, not confidentiality or integrity impact. The CVE data includes stable commit references but not distribution advisories, exploit reports, or complete product mapping.
Mitigation direction
- Map deployed kernels to vendor advisories and the referenced stable kernel commits.
- Update affected Linux kernels to packages containing the ath11k REO destination ring fix.
- Prioritize systems using ath11k Wi-Fi hardware in production or managed network appliances.
- If packages are unavailable, follow Linux distribution or device-vendor backport guidance.
Validation and detection
- Inventory systems with loaded ath11k or ath11k_pci modules.
- Check kernel versions against vendor-fixed packages and referenced stable commits.
- Review crash logs for ath11k_dp_process_rx or REO destination ring symptoms.
- Confirm post-update kernels include the buffer ID reservation and descriptor validation 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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CWE-401: Exact CWE lookup
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Open ATT&CK lookupCVE-2023-53315 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/866921dc06b94df91acfcf9359b57da943ed99b3CVE reference, Linux
- https://git.kernel.org/stable/c/3d3f8fe01a01d94a17fe1ae0d2e894049a972717CVE reference, Linux
- https://git.kernel.org/stable/c/068fd06148fbf0af95bb08dc77cff34ee679fdbcCVE reference, Linux
- https://git.kernel.org/stable/c/67459491f78146bcf7d93596e5b709d063dff5d8CVE reference, Linux
- https://git.kernel.org/stable/c/f9fff67d2d7ca6fa8066132003a3deef654c55b1CVE 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.
Missing Release of Memory after Effective Lifetime
Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.