Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed incorrect reg type conversion in releasereference Some helper functions will allocate memory. To avoid memory leaks, the verifier requires the eBPF program to release this memory by calling the corresponding helper...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: arm64: bpf: Mitigation is only applied to cBPF programs loaded by unprivileged users. Support for eBPF programs loaded by unprivileged users is typically disabled. This means that only cBPF programs need to be mitigated for BHB...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed the WARN function in getbpfrawtp regs. syzkaller reported an issue: WARNING: CPU: 3 PID: 5971 at kernel/trace/bpftrace.c:1861 getbpfrawtp regs+0xa4/0x100 kernel/trace/bpftrace.c:1861 Modules linked in: CPU: 3 UID: 0...

Astra Linux – Vulnerability in Linux, Linux 5.10

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before version 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow, resulting in an out-of-bounds write...

CVE-2026-98062

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF subsystem. The kernel incorrectly treats certain signal tracepoint arguments as trusted memory pointers, even when special non-pointer indicator values are passed during signal delivery. A local user with privileges to attach BPF...

CVE-2026-98043

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF verifier. The verifier incorrectly assumes that certain pointer types are non-null without accounting for unbounded offsets that can wrap around to zero at runtime. A local user with permissions to load BPF programs can exploit thi...

CVE-2026-98041

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF verifier. The verifier incorrectly predicts that 32-bit conditional branch comparisons between a pointer and zero are always taken, failing to account for valid pointer values whose lower 32 bits can be zero. A local attacker could...

CVE-2026-98040

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF verifier. When validating conditional jump operations using register comparisons against null values, the verifier fails to properly track register precision across different execution paths. A local user capable of loading BPF...

CVE-2026-98019

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF verifier. The verifier failed to mark scalar registers as precise when checking null function arguments and specific helper call parameters, causing its state-tracking logic to improperly prune verification paths. A local attacker...

CVE-2026-98134

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF verifier. During pointer register comparisons, the verifier can incorrectly deduce that a pointer cannot be null when it can actually be null at runtime. A local user with permissions to load BPF programs could exploit this flaw by...

CVE-2026-93270

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF subsystem. When the BPF interpreter processes specific per-CPU instructions instead of using Just-In-Time JIT compilation, it fails to properly handle memory offset calculations. A local user could exploit this flaw by loading a...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf: Ensuring that pending IRQ work is processed before freeing the ring buffer. A race condition was addressed in this fix, where irqwork could be queued in bpfringbufcommit, but the ring buffer was freed before the work execute...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed the KASAN use-after-free Read issue in computeeffectiveprogs. Syzbot identified a use-after-free bug in computeeffectiveprogs. The reproducer creates a number of BPF links, causing a failure in the injected allocation...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: BPF: The %p% format string is rejected in bprintf-like helpers. static const char fmt = "%p%"; bpfTracePrintkkernel, fmt, sizeoffmt; The above BPF program is not rejected, but it causes a kernel warning at runtime: “Please remove...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed a race condition in sockmapfree. sockmapfree calls releasesocksk without owning a reference to the socket. This could lead to a use-after-free, as syzbot identified this issue 1. Jakub Sitnicki already...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix insufficient bounds propagation from adjustscalarminmaxvals Kuee reported a corner case where the tnum becomes constant after the call to regboundoffset, but the bounds of the register are not correct. In particular, the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf: Send signals asynchronously if !preemptible BPF programs can execute in various contexts. When a program running in a non-preemptible context uses the bpfsendsignal function, issues may arise because this function can enter ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed the requestsock leak in sk lookup helpers A customer reported a requestsocket leak in a Calico cloud environment. We found that a BPF program was performing a socket lookup, taking a reference count of the socket. It w...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Forgetting ranges when refining tnum after JSET Syzbot reported a kernel warning due to a range invariant violation in the following BPF program. 0: call bpfgetnetnscookie 1: if r0 == 0 goto 2: if r0 & Oxffffffff goto The...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: arm64: bpf: Added BHB mitigation to the epilogue for cBPF programs. A malicious BPF program may manipulate the branch history to influence what the hardware speculates will happen next. Upon exiting a cBPF program, the BHB...