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debug/macho: invalid dynamic symbol table command can cause panic [1.16 backport] #48991

gopherbot opened this issue Oct 14, 2021 · 3 comments


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@gopherbot gopherbot commented Oct 14, 2021

@rolandshoemaker requested issue #48990 to be considered for backport to the next 1.16 minor release.

@gopherbot please open backport issues

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@cherrymui cherrymui commented Oct 20, 2021

Approved for backport. Thanks.


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@gopherbot gopherbot commented Oct 28, 2021

Change mentions this issue: [release-branch.go1.16] debug/macho: fail on invalid dynamic symbol table command


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@gopherbot gopherbot commented Oct 29, 2021

Closed by merging d19c5bd to release-branch.go1.16.


@gopherbot gopherbot closed this Oct 29, 2021
gopherbot pushed a commit that referenced this issue Oct 29, 2021
…able command

Fail out when loading a file that contains a dynamic symbol table
command that indicates a larger number of symbols than exist in the
loaded symbol table.

Thanks to Burak Çarıkçı - Yunus Yıldırım (CT-Zer0 Crypttech) for
reporting this issue.

Updates #48990
Fixes #48991
Fixes CVE-2021-41771

Change-Id: Ic3d6e6529241afcc959544b326b21b663262bad5
Reviewed-by: Julie Qiu <>
Reviewed-by: Katie Hockman <>
Reviewed-by: Emmanuel Odeke <>
Run-TryBot: Roland Shoemaker <>
TryBot-Result: Go Bot <>
Trust: Katie Hockman <>
(cherry picked from commit 61536ec)
Reviewed-by: Dmitri Shuralyov <>
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3 participants