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authorFlorian Weimer <fweimer@redhat.com>2024-04-25 15:01:07 +0200
committerFlorian Weimer <fweimer@redhat.com>2024-04-25 15:01:07 +0200
commitc04a21e050d64a1193a6daab872bca2528bda44b (patch)
treeeaf0bdf2baedbafe23e4eead9837c4263087cf7b /elf/Makefile
parentb048a482f088e53144d26a61c390bed0210f49f2 (diff)
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CVE-2024-33601, CVE-2024-33602: nscd: netgroup: Use two buffers in addgetnetgrentX (bug 31680)
This avoids potential memory corruption when the underlying NSS
callback function does not use the buffer space to store all strings
(e.g., for constant strings).

Instead of custom buffer management, two scratch buffers are used.
This increases stack usage somewhat.

Scratch buffer allocation failure is handled by return -1
(an invalid timeout value) instead of terminating the process.
This fixes bug 31679.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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