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kernel: userfaultfd: fix a race between writeprotect and exit_mmap()

🗓️ 08 Aug 2024 04:53:16Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 17 Views

Race between writeprotect and exit_mmap in userfaultfd during concurrent VMA removal on exit.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10aarch64bpftool4.18.0-553.16.1.el8_10bpftool-4.18.0-553.16.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebpftool4.18.0-553.16.1.el8_10bpftool-4.18.0-553.16.1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xbpftool4.18.0-553.16.1.el8_10bpftool-4.18.0-553.16.1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64bpftool4.18.0-553.16.1.el8_10bpftool-4.18.0-553.16.1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64bpftool-debuginfo4.18.0-553.16.1.el8_10bpftool-debuginfo-4.18.0-553.16.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebpftool-debuginfo4.18.0-553.16.1.el8_10bpftool-debuginfo-4.18.0-553.16.1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xbpftool-debuginfo4.18.0-553.16.1.el8_10bpftool-debuginfo-4.18.0-553.16.1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64bpftool-debuginfo4.18.0-553.16.1.el8_10bpftool-debuginfo-4.18.0-553.16.1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64kernel4.18.0-553.16.1.el8_10kernel-4.18.0-553.16.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lekernel4.18.0-553.16.1.el8_10kernel-4.18.0-553.16.1.el8_10.ppc64le.rpm
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02 Oct 2026 17:10Current
7.2High risk
Vulners AI Score7.2
CVSS 3.14.7 - 7.8
EPSS0.00174
SSVC
CWE-362
virtual memory areaprocess exituserfaultfd writeprotectrace conditionmemory managementkernel race
17