CVE-2026-18238 OOBR in rpcap client in libpcap before 1.10.7

The rpcap client code that processes a RPCAPMSGPACKET message received from the server incorrectly validates its headers. A malicious server can send a crafted message and cause the client to treat up to 20 bytes of the client process memory beyond the end of the buffer as if it was a part of the...

Out-of-bounds Read

Overview Affected versions of this package are vulnerable to Out-of-bounds Read in the rpcap client process when handling RPCAPMSGPACKET messages from a server. An attacker can access sensitive information from process memory by sending specially crafted messages from a malicious server...

CVE-2026-18313

CVE-2026-18313 is a memory leak in the rpcapd (remote capture daemon) component of libpcap versions before 1.10.7 . Each RPCAP_MSG_UPDATEFILTER_REQ or RPCAP_MSG_STARTCAP_REQ message from a client causes an allocation of up to 65536 bytes that is never freed, leaking memory even under normal use. ...

CVE-2026-18313 rpcapd memory leak in libpcap before 1.10.7

rpcapd can allocate up to 65536 bytes per each RPCAPMSGUPDATEFILTERREQ or RPCAPMSGSTARTCAPREQ message received from the client, but it never frees the memory, so it leaks memory even under normal use. A malicious client can cause the server to leak memory substantially faster...

CVE-2026-18313 rpcapd memory leak in libpcap before 1.10.7

rpcapd can allocate up to 65536 bytes per each RPCAPMSGUPDATEFILTERREQ or RPCAPMSGSTARTCAPREQ message received from the client, but it never frees the memory, so it leaks memory even under normal use. A malicious client can cause the server to leak memory substantially faster...

CVE-2026-18313 rpcapd memory leak in libpcap before 1.10.7

rpcapd can allocate up to 65536 bytes per each RPCAPMSGUPDATEFILTERREQ or RPCAPMSGSTARTCAPREQ message received from the client, but it never frees the memory, so it leaks memory even under normal use. A malicious client can cause the server to leak memory substantially faster...

Missing Release of Resource after Effective Lifetime

Overview Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime in the rpcapd process. An attacker can exhaust system memory by sending specially crafted RPCAPMSGUPDATEFILTERREQ or RPCAPMSGSTARTCAPREQ messages, causing the service to become...

CVE-2026-6554

The libpcap library is vulnerable to a denial of service condition because the BPF interpreter treats the offset in the 'ja L' instruction as a signed integer. While this is used to implement looping via backward jumps, the interpreter fails to limit the number of loop iterations. Consequently, a...

CVE-2026-6554 infinte loop in libpcap before 1.10.7

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. A crafted filter program or the 'protochain' primitive used on a crafted network packet can cause the interpret...

EUVD-2026-72019

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. In particular uncommon use cases a crafted filter program can cause the interpreter to loop infinitely...

CVE-2026-6554

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. A crafted filter program or the 'protochain' primitive used on a crafted network packet can cause the interpret...

CVE-2026-6554 infinte loop in libpcap before 1.10.7

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. A crafted filter program or the 'protochain' primitive used on a crafted network packet can cause the interpret...

CVE-2026-6554

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. In particular uncommon use cases a crafted filter program can cause the interpreter to loop infinitely...

CVE-2026-6554 infinte loop in libpcap before 1.10.7

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. A crafted filter program or the 'protochain' primitive used on a crafted network packet can cause the interpret...

CVE-2026-6554

libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. A crafted filter program or the 'protochain' primitive used on a crafted network packet can cause the interpret...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop through the improper handling of offsets in the BPF interpreter, specifically in the ja L instruction. An attacker can cause the process to enter an infinite loop by supplying a specially crafted filter program. Remediatio...

CVE-2026-6244

libpcap BPF interpreter for the 'div k' and 'mod k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero...

CVE-2026-6244 division by zero in libpcap before 1.10.7

libpcap BPF interpreter for the 'div k' and 'mod k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero...

EUVD-2026-72018

libpcap BPF interpreter for the 'div k' and 'mod k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero...

CVE-2026-6244 division by zero in libpcap before 1.10.7

libpcap BPF interpreter for the 'div k' and 'mod k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero...