Bug 2284277 (CVE-2024-36881) - CVE-2024-36881 kernel: mm/userfaultfd: reset ptes when close() for wr-protected ones
Summary: CVE-2024-36881 kernel: mm/userfaultfd: reset ptes when close() for wr-protect...
Status: NEW
Alias: CVE-2024-36881
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Product Security
QA Contact:
Depends On: 2284278
Blocks: 2284293
TreeView+ depends on / blocked
Reported: 2024-06-02 15:34 UTC by ybuenos
Modified: 2024-07-07 03:11 UTC (History)
49 users (show)

Fixed In Version: kernel 6.6.31, kernel 6.8.10, kernel 6.9
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Description ybuenos 2024-06-02 15:34:27 UTC
In the Linux kernel, the following vulnerability has been resolved:

mm/userfaultfd: reset ptes when close() for wr-protected ones

The Linux kernel CVE team has assigned CVE-2024-36881 to this issue.

Upstream advisory:

Comment 1 ybuenos 2024-06-02 15:35:05 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2284278]

Comment 4 Alex 2024-06-09 16:13:08 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-36881 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is an approximation based on flags DISK IMPROVEONLY  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.

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