CVE-2026-89580

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable preemption in bpfgetstack getperfcallchain returns a per-CPU perfcallchainentry buffer and releases its recursion slot via putcallchainentry before returning, so nothing keeps the entry reserved while bpfgetstack...

CVE-2026-89579 bpf: Harden bloom filter sizing and indexing on 32-bit kernels

In the Linux kernel, the following vulnerability has been resolved: bpf: Harden bloom filter sizing and indexing on 32-bit kernels bloommapalloc has two 32-bit-specific problems when the computed bitmap reaches the U32MAX fallback case. First, BITSTOBYTESU32MAX is evaluated with 32-bit arithmetic...

CVE-2026-89580 bpf: Disable preemption in __bpf_get_stack

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable preemption in bpfgetstack getperfcallchain returns a per-CPU perfcallchainentry buffer and releases its recursion slot via putcallchainentry before returning, so nothing keeps the entry reserved while bpfgetstack...

CVE-2026-89579

In the Linux kernel, the following vulnerability has been resolved: bpf: Harden bloom filter sizing and indexing on 32-bit kernels bloommapalloc has two 32-bit-specific problems when the computed bitmap reaches the U32MAX fallback case. First, BITSTOBYTESU32MAX is evaluated with 32-bit arithmetic...

CVE-2026-89580 bpf: Disable preemption in __bpf_get_stack

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable preemption in bpfgetstack getperfcallchain returns a per-CPU perfcallchainentry buffer and releases its recursion slot via putcallchainentry before returning, so nothing keeps the entry reserved while bpfgetstack...

CVE-2026-89579 bpf: Harden bloom filter sizing and indexing on 32-bit kernels

In the Linux kernel, the following vulnerability has been resolved: bpf: Harden bloom filter sizing and indexing on 32-bit kernels bloommapalloc has two 32-bit-specific problems when the computed bitmap reaches the U32MAX fallback case. First, BITSTOBYTESU32MAX is evaluated with 32-bit arithmetic...

CVE-2026-89579

CVE-2026-89579 affects the Linux kernel's BPF bloom filter on 32-bit x86 systems. Two distinct flaws exist in bloom_map_alloc() when the computed bitmap reaches the U32_MAX fallback: (1) a 32-bit arithmetic wrap in DIV_ROUND_UP causes under-allocation of the bitmap, and (2) hash values in the ran...

EUVD-2026-76491

In the Linux kernel, the following vulnerability has been resolved: bpf: Harden bloom filter sizing and indexing on 32-bit kernels bloommapalloc has two 32-bit-specific problems when the computed bitmap reaches the U32MAX fallback case. First, BITSTOBYTESU32MAX is evaluated with 32-bit arithmetic...

EUVD-2026-76475

In the Linux kernel, the following vulnerability has been resolved: ip: orphan prefetched skbs before multicast forwarding IPv4 and IPv6 input preserve an skb-sk association installed by bpfskassign so that local delivery can use the selected socket under RCU. Both address families can also...

CVE-2026-89564 ip: orphan prefetched skbs before multicast forwarding

In the Linux kernel, the following vulnerability has been resolved: ip: orphan prefetched skbs before multicast forwarding IPv4 and IPv6 input preserve an skb-sk association installed by bpfskassign so that local delivery can use the selected socket under RCU. Both address families can also...

PT-2026-90297

In the Linux kernel, the following vulnerability has been resolved: bpf, x86: Fix per-CPU address resolution into an extended register The destination of the per-CPU address MOV is encoded in ModRM.reg, which is extended by REX.R, but the REX prefix is built with add 1mod, which sets REX.B. REX.B...

PT-2026-90296

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable preemption in bpf get stack get perf callchain returns a per-CPU perf callchain entry buffer and releases its recursion slot via put callchain entry before returning, so nothing keeps the entry reserved while bpf get...

PT-2026-90295

In the Linux kernel, the following vulnerability has been resolved: bpf: Harden bloom filter sizing and indexing on 32-bit kernels bloom map alloc has two 32-bit-specific problems when the computed bitmap reaches the U32 MAX fallback case. First, BITS TO BYTESU32 MAX is evaluated with 32-bit...

CVE-2026-0799

A flaw was found in libpcap. The Berkeley Packet Filter BPF interpreter in libpcap does not properly validate register indexes in BPF instructions. A local attacker could craft a malicious filter program to trigger an out-of-bounds read and write vulnerability. This could allow the attacker to re...

CVE-2026-31911

A flaw was found in libpcap. A local attacker could provide a crafted filter program containing an invalid Berkeley Packet Filter BPF opcode. This could cause the operating system OS process using libpcap to terminate, leading to a Denial of Service DoS...

CVE-2026-6244

A flaw was found in libpcap. The Berkeley Packet Filter BPF interpreter's 'div k' and 'mod k' instructions do not validate if the immediate value 'k' is zero. A local attacker with low privileges could exploit this by providing a specially crafted filter program, leading to a division-by-zero...

CVE-2026-6554

A flaw was found in libpcap. The Berkeley Packet Filter BPF interpreter incorrectly handles offsets in 'ja L' instructions, allowing backward jumps without limiting loop iterations. A local attacker could provide a specially crafted filter program, leading to an infinite loop and causing a Denial...

SUSE CVE-2026-0799

In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to tr...

CVE-2026-31912

A flaw was found in libpcap. The BPF interpreter in libpcap does not correctly handle crafted filter programs, leading to an out-of-bounds read. A local attacker could provide a specially crafted filter program, causing the interpreter to attempt to read memory outside of its allocated buffer. Th...

SUSE-SU-2026:23477-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and Micro 6.1 RT kernel was updated to fix various security issues: The following security issues were fixed: - CVE-2024-57841: net: fix memory leak in tcpconnrequest bsc1235944 - CVE-2025-68214: timers: Fix NULL function pointer race in timershutdownsync...