Security readout for executives and security teams
Plain-English summary
This CVE is a Linux perf trace memory leak. The available evidence shows small allocations were not freed when perf trace handled syscall tracepoint metadata. It affects operational tooling rather than a remotely exposed service, so business urgency is low unless perf is widely used on sensitive production hosts.
Executive priority
Treat this as routine patch management, not an emergency response item. Address it through normal Linux update cycles, with extra attention to engineering, observability, and privileged administration hosts where perf is used.
Technical view
The bug is in tools/perf/builtin-trace.c. Allocation of evsel->priv for non-syscalls tracepoint systems was not matched by the previous conditional free logic. The fix frees evsel->priv when set and uses evsel_trace__delete(). LeakSanitizer evidence shows 80 bytes leaked during perf trace sleep 1.
Likely exposure
Exposure is most likely on Linux systems carrying the affected kernel/perf tool versions and where perf trace is installed or used. The provided data does not identify a network-facing attack surface or affected downstream distribution packages.
Exploitation context
The source bundle does not show active exploitation, KEV listing, public exploit details, privilege escalation, or remote code execution. Evidence is limited to a reproducible memory leak detected with AddressSanitizer in perf trace.
Researcher notes
The strongest evidence is the upstream commit description and sanitizer trace. Severity, CVSS, CWE, exploitability, and downstream package mappings are not provided. Avoid extrapolating beyond a local perf trace memory leak unless additional vendor analysis appears.
Mitigation direction
- Apply vendor Linux kernel/perf updates containing the referenced stable fixes.
- Track distribution advisories for package-specific fixed versions.
- Prioritize systems where perf trace is installed or routinely used.
- If updates are unavailable, request vendor guidance for supported mitigation.
- Document any deferred remediation with operational justification.
Validation and detection
- Inventory Linux hosts with perf or linux-tools installed.
- Compare kernel/perf versions with vendor advisories and affected ranges.
- Confirm package changelogs include one of the referenced stable commits.
- Check whether perf trace is available on production systems.
- Record whether exposure depends on local tool execution only.
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.
CVE-2023-53649 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
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.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/c3bc668581e71e7c3bc7eb1d647f25f8db222163CVE reference, Linux
- https://git.kernel.org/stable/c/62dd514c34be63d3d5cae1f52a7e8b96c6dd6630CVE reference, Linux
- https://git.kernel.org/stable/c/27f396f64537b1ae48d0644d7cbf0d250b3c0b33CVE reference, Linux
- https://git.kernel.org/stable/c/7962ef13651a9163f07b530607392ea123482e8aCVE 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.