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authorMichael Vogt <mvo@ubuntu.com>2015-05-22 15:28:53 +0200
committerMichael Vogt <mvo@ubuntu.com>2015-05-22 17:52:41 +0200
commit7c4511322e22c3d97c6d892204af67d240416e69 (patch)
tree158e18fc2728599166c9803b3e58dea5e76c2827 /methods/makefile
parent4694e07d450baa13fa04482752ca369a5797c640 (diff)
Fix endless loop in apt-get update that can cause disk fillup
The apt http code parses Content-Length and Content-Range. For both requests the variable "Size" is used and the semantic for this Size is the total file size. However Content-Length is not the entire file size for partital file requests. For servers that send the Content-Range header first and then the Content-Length header this can lead to globbing of Size so that its less than the real file size. This may lead to a subsequent passing of a negative number into the CircleBuf which leads to a endless loop that writes data. Thanks to Anton Blanchard for the analysis and initial patch. LP: #1445239
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