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0adba001b4
This contains backports for the following vulnerabilities:
- CVE-2025-15281:
Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the
GNU C Library version 2.0 to version 2.42 may cause the interface to
return uninitialized memory in the we_wordv member, which on
subsequent calls to wordfree may abort the process.
https://www.cve.org/CVERecord?id=CVE-2025-15281
- CVE-2026-0861:
Passing too large an alignment to the memalign suite of functions
(memalign, posix_memalign, aligned_alloc) in the GNU C Library version
2.30 to 2.42 may result in an integer overflow, which could
consequently result in a heap corruption. Note that the attacker must
have control over both, the size as well as the alignment arguments of
the memalign function to be able to exploit this. The size parameter
must be close enough to PTRDIFF_MAX so as to overflow size_t along
with the large alignment argument. This limits the malicious inputs
for the alignment for memalign to the range [1<<62+ 1, 1<<63] and
exactly 1<<63 for posix_memalign and aligned_alloc. Typically the
alignment argument passed to such functions is a known constrained
quantity (e.g. page size, block size, struct sizes) and is not
attacker controlled, because of which this may not be easily
exploitable in practice. An application bug could potentially result
in the input alignment being too large, e.g. due to a different buffer
overflow or integer overflow in the application or its dependent
libraries, but that is again an uncommon usage pattern given typical
sources of alignments.
https://www.cve.org/CVERecord?id=CVE-2026-0861
- CVE-2026-0915:
Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf
that specifies the library's DNS backend for networks and queries for
a zero-valued network in the GNU C Library version 2.0 to version 2.42
can leak stack contents to the configured DNS resolver.
https://www.cve.org/CVERecord?id=CVE-2026-0915
Signed-off-by: Titouan Christophe <titouan.christophe@mind.be>
(cherry picked from commit 18de297a5a)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at https://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches