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CVE-2026-33150

A flaw was found in libfuse. A use-after-free vulnerability in the io_uring subsystem allows a local attacker to potentially execute arbitrary code and crash FUSE (Filesystem in Userspace) filesystem processes. This occurs when io_uring thread creation fails due to resource exhaustion, such as limits imposed by cgroup pids.max, causing a dangling pointer to be stored and later used during session shutdown. This vulnerability is reliably triggered in containerized environments.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9600691b39f998d700f797c3c49735af5e2d46375772b295861f3ded1e13095c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"fuse","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/affected/0

{"product":"libfuse","vendor":"libfuse","versions":[{"status":"affected","version":">= 3.18.0, < 3.18.2"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"fuse-sshfs","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/affected/1
cwe · 2 assertions

{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-825","description":"Expired Pointer Dereference","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

3 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"fuse","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/affected/0
{"product":"libfuse","vendor":"libfuse","versions":[{"status":"affected","version":">= 3.18.0, < 3.18.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"fuse-sshfs","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/affected/1

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-825","description":"Expired Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-33150"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/references/0
{"name":"RHBZ#2449771","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2449771"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/references/1
{"name":"https://github.com/libfuse/libfuse/commit/49fcd891a58f622c098e2ca67d66086f7b213836","tags":["x_refsource_MISC"],"url":"https://github.com/libfuse/libfuse/commit/49fcd891a58f622c098e2ca67d66086f7b213836"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/references/1
{"name":"https://github.com/libfuse/libfuse/releases/tag/fuse-3.18.2","tags":["x_refsource_MISC"],"url":"https://github.com/libfuse/libfuse/releases/tag/fuse-3.18.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/references/2
{"name":"https://github.com/libfuse/libfuse/security/advisories/GHSA-qxv7-xrc2-qmfx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/libfuse/libfuse/security/advisories/GHSA-qxv7-xrc2-qmfx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33150.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b4e34d66b8b456d39d0892ee050d4135e4b43224dcb1d5864f918e79a344548d · sha256:5a0c8cc1317bd889… · /containers/adp/1/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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