GNU GRUB - Bugs: bug #55694, Possible bug in file...
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bug #55694: Possible bug in file grub/grub-core/fs/squash4.c line 739
Submitter: | Petru-Florin Mihancea <petrum2> | ||
Submitted: | Mon 11 Feb 2019 02:39:26 PM UTC | ||
Category: | None | Severity: | Major |
Priority: | 5 - Normal | Item Group: | None |
Status: | None | Privacy: | Public |
Assigned to: | None | Originator Name: | |
Open/Closed: | Open | Release: | Git master |
Release: | Reproducibility: | None | |
Planned Release: | None |
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Items that depend on this one: None found
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Corresponding source code
While experimenting with a novel static analysis technique in CodeSonar, we noticed the following potential problem at the next location:
FilePath: grub/grub-core/fs/squash4.c
Function: grub_squash_open
Line number: 739
As far as I understood from a comment for function grub_fshelp_find_file (invoked in line 707 in the previous function), fdiro may point to root as a result of the execution of grub_fshelp_find_file. Thus, in line 739 (and 733) it is possible to deallocate a non-heap address (since root is local).
Thanks,
Petru-Florin Mihancea