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CVE-2023-53614 PUBLISHED CVSS 4.699999809265137 MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mm/ksm: fix race with VMA iteration and mm_struct teardown exit_mmap() will tear down the VMAs and maple tree with the mmap_lock held in write mode. Ensure that the maple tree is still valid by checking ksm_test_exit() after taking the mmap_lock in read mode, but before the for_each_vma() iterator dereferences a destroyed maple tree. Since the maple tree is destroyed, the flags telling lockdep to check an external lock has been cleared. Skip the for_each_vma() iterator to avoid dereferencing a maple tree without the external lock flag, which would create a lockdep warning.

EPSS 0.01% · 1.0th percentile

Risk Scores

CVSS v3.1
4.699999809265137
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.01%
1.0th percentile

Affected Products

VendorProductVersions
LinuxLinuxa5f18ba0727656bd1fe3bcdb0d563f81790f9a04, a5f18ba0727656bd1fe3bcdb0d563f81790f9a04, 0
linuxlinux_kernel6.1, 6.1, 6.1

Timeline

References

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