An unprivileged local user can abuse the bug to access freed kernel memory. This can be exploited to escalate privileges.
Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Fri, 21 Aug 2026 16:30:00 +0000
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ssvc
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Thu, 20 Aug 2026 19:30:00 +0000
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cvssV3_1
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Wed, 19 Aug 2026 13:45:00 +0000
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Freebsd
Freebsd freebsd |
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| Vendors & Products |
Freebsd
Freebsd freebsd |
Wed, 19 Aug 2026 06:00:00 +0000
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| Description | Pages belonging to largepage shared memory objects were not explicitly wired. When sendfile(2) transmitted such an object with the SF_NOCACHE flag, it freed the underlying pages after transmission even though existing mappings still referred to them. An unprivileged local user can abuse the bug to access freed kernel memory. This can be exploited to escalate privileges. | |
| Title | posixshm: largepage shared memory objects not explicitly wired | |
| Weaknesses | CWE-826 | |
| References |
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Projects
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Status: PUBLISHED
Assigner: freebsd
Published:
Updated: 2026-08-20T18:35:54.694Z
Reserved: 2026-05-29T20:24:28.616Z
Link: CVE-2026-49427
Updated: 2026-08-20T18:35:51.151Z
Status : Received
Published: 2026-08-19T06:17:41.977
Modified: 2026-08-20T19:16:53.497
Link: CVE-2026-49427
No data.
OpenCVE Enrichment
Updated: 2026-08-21T02:00:05Z