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buffer: use size_t instead of uint32_t to avoid segmentation fault #48033

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merged 6 commits into from
May 11, 2024
Merged

buffer: use size_t instead of uint32_t to avoid segmentation fault #48033

merged 6 commits into from
May 11, 2024

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Xstoudi
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@Xstoudi Xstoudi commented May 16, 2023

Fixes: #46836

If tests are needed for this, I'll need some guidance about how to do it as I don't know how to test if something produce a segfault or not.

@nodejs-github-bot nodejs-github-bot added buffer Issues and PRs related to the buffer subsystem. c++ Issues and PRs that require attention from people who are familiar with C++. needs-ci PRs that need a full CI run. labels May 16, 2023
@Xstoudi Xstoudi changed the title fix: use size_t instead of uint_32_t to avoid segmentation fault buffer: use size_t instead of uint_32_t to avoid segmentation fault May 16, 2023
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bnoordhuis approved these changes May 16, 2023
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It's spelled uint32_t but LGTM apart from that. :-)

I spotted another bug while looking at the surrounding code: that CHECK(dlen >= slen * 2) a few lines up doesn't guard against overflow. Maybe good for a follow-up PR.

@Xstoudi Xstoudi changed the title buffer: use size_t instead of uint_32_t to avoid segmentation fault buffer: use size_t instead of uint32_t to avoid segmentation fault May 16, 2023
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Xstoudi commented May 16, 2023

Commit message amended.

I could fix that bug directly if needed but I'm not sure to understand in which case would it let an overflow happen?

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Imagine size_t is 32 bits and slen == 0x80000001, then slen * 2 wraps around to 2.

As a bug it's mostly hypothetical but it's not entirely in the realm of the impossible.

@bnoordhuis bnoordhuis added request-ci Add this label to start a Jenkins CI on a PR. and removed needs-ci PRs that need a full CI run. labels May 17, 2023
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Xstoudi commented Jul 22, 2023

Any chance it get merged?

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targos commented Jul 24, 2023

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tniessen
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CI: https://ci.nodejs.org/job/node-test-pull-request/56485/

@aduh95 aduh95 added the request-ci Add this label to start a Jenkins CI on a PR. label May 10, 2024
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CI: https://ci.nodejs.org/job/node-test-pull-request/59081/

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CI: https://ci.nodejs.org/job/node-test-pull-request/59090/

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CI: https://ci.nodejs.org/job/node-test-pull-request/59091/

@aduh95 aduh95 merged commit 05a941f into nodejs:main May 11, 2024
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aduh95 commented May 11, 2024

Landed in 05a941f

targos pushed a commit that referenced this pull request May 11, 2024
@Xstoudi @targos
buffer: use size_t instead of uint32_t to avoid segmentation fault
a5d63f9 
Fixes: #46836
PR-URL: #48033
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Minwoo Jung <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>
Reviewed-By: Stephen Belanger <[email protected]>
@targos targos mentioned this pull request May 13, 2024
Merged
marco-ippolito pushed a commit that referenced this pull request Jun 17, 2024
@Xstoudi @marco-ippolito
buffer: use size_t instead of uint32_t to avoid segmentation fault
baa6b55 
Fixes: #46836
PR-URL: #48033
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Minwoo Jung <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>
Reviewed-By: Stephen Belanger <[email protected]>
@marco-ippolito marco-ippolito mentioned this pull request Jun 17, 2024
Merged
marco-ippolito pushed a commit that referenced this pull request Jun 17, 2024
@Xstoudi @marco-ippolito
buffer: use size_t instead of uint32_t to avoid segmentation fault
67b157a 
Fixes: #46836
PR-URL: #48033
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Minwoo Jung <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>
Reviewed-By: Stephen Belanger <[email protected]>
marco-ippolito pushed a commit that referenced this pull request Jun 17, 2024
@Xstoudi @marco-ippolito
buffer: use size_t instead of uint32_t to avoid segmentation fault
8d628c3 
Fixes: #46836
PR-URL: #48033
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Minwoo Jung <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>
Reviewed-By: Stephen Belanger <[email protected]>
EliphazBouye pushed a commit to EliphazBouye/node that referenced this pull request Jun 20, 2024
@Xstoudi @EliphazBouye
buffer: use size_t instead of uint32_t to avoid segmentation fault
6a50607 
Fixes: nodejs#46836
PR-URL: nodejs#48033
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Minwoo Jung <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>
Reviewed-By: Stephen Belanger <[email protected]>
bmeck pushed a commit to bmeck/node that referenced this pull request Jun 22, 2024
@Xstoudi @bmeck
buffer: use size_t instead of uint32_t to avoid segmentation fault
89ad851 
Fixes: nodejs#46836
PR-URL: nodejs#48033
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Minwoo Jung <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>
Reviewed-By: Stephen Belanger <[email protected]>
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Integer overflow in StringBytes::Encode hex leads to a crash or an infinite loop