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CVE Record

CVE-2022-48799: perf: Fix list corruption in perf_cgroup_switch()

In the Linux kernel, the following vulnerability has been resolved: perf: Fix list corruption in perf_cgroup_switch() There's list corruption on cgrp_cpuctx_list. This happens on the following path: perf_cgroup_switch: list_for_each_entry(cgrp_cpuctx_list) cpu_ctx_sched_in ctx_sched_in ctx_pinned_sched_in merge_sched_in perf_cgroup_event_disable: remove the event from the list Use list_for_each_entry_safe() to allow removing an entry during iteration.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-48799 is a Linux kernel bug in the performance monitoring cgroup path. The published record describes internal list corruption during scheduling-related handling. Business impact is not quantified in the sources: no CVSS score, CWE, or confirmed exploitation is provided.

Executive priority

Track and remediate through normal kernel patch management unless vendor guidance raises severity. Give higher priority to shared, multi-tenant, or untrusted workload environments because kernel corruption bugs can have outsized operational impact.

Technical view

The issue is in perf_cgroup_switch(), where cgrp_cpuctx_list can be modified while being iterated. A nested path through cpu_ctx_sched_in(), ctx_sched_in(), ctx_pinned_sched_in(), merge_sched_in(), and perf_cgroup_event_disable() may remove an event during iteration. The fix changes iteration to a safe list traversal pattern.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions or builds containing the vulnerable perf cgroup code path. The source bundle lists Linux kernel versions including 4.11 through 5.17-era branches, but distribution backports must be checked separately.

Exploitation context

The provided sources do not show active exploitation, public exploit availability, or KEV listing. They also do not define attacker prerequisites, privilege requirements, or concrete impact beyond kernel list corruption.

Researcher notes

Evidence is sparse. The record identifies a kernel perf cgroup list-corruption flaw and upstream stable fixes, but lacks CVSS, CWE, exploitability analysis, and attacker model. Avoid assuming privilege escalation, remote reachability, or exploit status without additional vendor evidence.

Mitigation direction

  • Update affected Linux kernels to vendor-supported builds containing the referenced stable fixes.
  • Check Linux distribution advisories for backported fixes and exact package versions.
  • Prioritize systems where untrusted users or workloads can access performance or cgroup features.
  • If patching is delayed, follow vendor guidance for supported compensating controls.

Validation and detection

  • Inventory running kernel versions across servers, containers hosts, and appliances.
  • Confirm whether installed kernels include the upstream stable fix commits or distro backports.
  • Review vendor security advisories for package-level affected and fixed versions.
  • Verify patched source uses safe list iteration in perf_cgroup_switch().
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

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CVE-2022-48799 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
2ADP providers
8Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux058fe1c0440e68a1ba3c2270ae43e9f0298b27d8, 058fe1c0440e68a1ba3c2270ae43e9f0298b27d8, 058fe1c0440e68a1ba3c2270ae43e9f0298b27d8, 058fe1c0440e68a1ba3c2270ae43e9f0298b27d8, 058fe1c0440e68a1ba3c2270ae43e9f0298b27d8, 058fe1c0440e68a1ba3c2270ae43e9f0298b27d8, 058fe1c0440e68a1ba3c2270ae43e9f0298b27d8unaffected
LinuxLinux4.11, 0, 4.14.267, 4.19.230, 5.4.180, 5.10.101, 5.15.24, 5.16.10, 5.17affected
Weakness

CWE details

No CWE listed

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