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memcpy() with overlapping src and dest buffers is an undefined behavior in C. In the current code, a ConfRej response is generated by copying input data in-place, where the dest address is lower than the src. This happens to work in practice because memcpy() forward-copies data, matching the behavior of memmove() in this case. However, if FORTIFY_SOURCE or Address Sanitizer is enabled, memcpy() will detect the overlap at run time and abort the program. Replace the memcpy() with memmove() to ensure a well-defined behavior. Reported-by: Filippo Carletti <filippo.carletti@gmail.com> MRU patch https://github.com/ppp-project/ppp/pull/573 Signed-off-by: Paul Donald <newtwen+github@gmail.com> Link: https://github.com/openwrt/openwrt/pull/22286 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> |
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| dropbear | ||
| ead | ||
| hostapd | ||
| ipset-dns | ||
| lldpd | ||
| odhcpd | ||
| omcproxy | ||
| ppp | ||
| relayd | ||
| uhttpd | ||
| umdns | ||
| unetd | ||
| unetmsg | ||
| ustp | ||