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Differential D52401

Fix possible out of bound read in armv8_crc32c
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Authored by jhb on Sep 5 2025, 7:33 PM.
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emaste
imp

Details

Reviewers
andrew
Group Reviewers
cheri
Commits
rG5660178fd14b: Fix possible out of bounds read in armv8_crc32c
rG64b51d35cef5: Fix possible out of bounds read in armv8_crc32c
rGf48b1a34ef85: Fix possible out of bounds read in armv8_crc32c
Summary

Obtained from: CheriBSD

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rG FreeBSD src repository
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Tests Not Applicable

Event Timeline

jhb created this revision.Sep 5 2025, 7:33 PM
Herald added subscribers: emaste, imp. · View Herald TranscriptSep 5 2025, 7:33 PM
jhb requested review of this revision.Sep 5 2025, 7:33 PM
Harbormaster completed remote builds in B66851: Diff 161616.Sep 5 2025, 7:33 PM
jhb added a comment.Sep 5 2025, 7:56 PM

I tested this in QEMU by using an NVMeoF connection using CRC32 digests over to another x86 VM running the target side of the NVMeoF connection.

andrew accepted this revision.Sep 9 2025, 1:55 PM
This revision is now accepted and ready to land.Sep 9 2025, 1:55 PM
Closed by commit rGf48b1a34ef85: Fix possible out of bounds read in armv8_crc32c (authored by Zhongqi Zhao <zz479@cam.ac.uk>, committed by jhb). · Explain WhySep 10 2025, 2:22 PM
This revision was automatically updated to reflect the committed changes.
jhb added a commit: rGf48b1a34ef85: Fix possible out of bounds read in armv8_crc32c.
jhb added a commit: rG64b51d35cef5: Fix possible out of bounds read in armv8_crc32c.Oct 10 2025, 9:05 PM
Herald added a reviewer: cheri. · View Herald TranscriptOct 10 2025, 9:05 PM
jhb added a commit: rG5660178fd14b: Fix possible out of bounds read in armv8_crc32c.Oct 10 2025, 9:05 PM

Revision Contents
Changeset List

PathSize
sys/
libkern/
arm64/
8 lines

Diff 161854

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sys/libkern/arm64/crc32c_armv8.S

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