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| author |  Jeff King <peff@peff.net> | 2017-02-14 12:27:45 -0500 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2017-02-14 11:28:53 -0800 |
| commit | d9e557a320bd4695bccad873e176562489b2d199 (patch) | |
| tree | 136c4bfc8528f19fd593f6c83d429b03ed5cfb2f /Documentation/git-get-tar-commit-id.txt | |
| parent | show-branch: drop head_len variable (diff) | |
| download | tgif-d9e557a320bd4695bccad873e176562489b2d199.tar.xz | |
show-branch: store resolved head in heap buffer
We resolve HEAD and copy the result to a fixed-size buffer
with memcpy, never checking that it actually fits. This bug
dates back to 8098a178b (Add git-symbolic-ref, 2005-09-30).
Before that we used readlink(), which took a maximum buffer
size.
We can fix this by using resolve_refdup(), which duplicates
the buffer on the heap. That also lets us just check
for a NULL pointer to see if we have resolved HEAD, and
drop the extra head_p variable.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/git-get-tar-commit-id.txt')
0 files changed, 0 insertions, 0 deletions