CVE-2026-93147

A flaw was found in the kernel. The s390/bpf component incorrectly handles the loading of a 32-bit CPU number cpunr into a 64-bit BPF register BPFREG0. The ly instruction, used for this operation, fails to clear the upper bits of the 64-bit register. This oversight could lead to the unintended...

SUSE CVE-2026-93147

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG0 is a 64 bit register, when ly loads the cpunr into BPFREG0 it does not zero the upper bits, but llgf does...

Linux Distros Unpatched Vulnerability : CVE-2026-93147

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG0 is a 64 bit...

CVE-2026-93147

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG0 is a 64 bit register, when ly loads the cpunr into BPFREG0 it does not zero the upper bits, but llgf does...

EUVD-2026-82255

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG0 is a 64 bit register, when ly loads the cpunr into BPFREG0 it does not zero the upper bits, but llgf does...

CVE-2026-93147 s390/bpf: Replace ly instruction with llgf

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG0 is a 64 bit register, when ly loads the cpunr into BPFREG0 it does not zero the upper bits, but llgf does...

CVE-2026-93147 s390/bpf: Replace ly instruction with llgf

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG0 is a 64 bit register, when ly loads the cpunr into BPFREG0 it does not zero the upper bits, but llgf does...

CVE-2026-93147

CVE-2026-93147 affects the Linux kernel on the s390 architecture within the BPF (Berkeley Packet Filter) subsystem. The root cause is that the ly instruction loads the 32-bit value cpu_nr into the 64-bit register BPF_REG_0 without zeroing the upper 32 bits, leaving stale data that can corrupt sub...

CVE-2026-90211

CVE-2026-90211 affects the Linux kernel on the s390x architecture. The vulnerability resides in the BPF JIT compiler's handling of read-modify-write (RMW) atomics on arena pointers. Specifically, bpf_jit_probe_atomic_pre() leaves probe->reg at -1 (the sentinel from bpf_jit_probe_init()), so wh...

CVE-2026-90211 bpf, s390: Clear fetch destination on faulting arena atomic

In the Linux kernel, the following vulnerability has been resolved: bpf, s390: Clear fetch destination on faulting arena atomic Same missing register clear as on riscv64. A RMW atomic on an arena pointer is converted to BPFPROBEATOMIC and gets an exception table entry, but bpfjitprobeatomicpre on...

CVE-2026-93147: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG0 is a 64 bit register, when ly loads the cpunr into BPFREG0 it does not zero the upper bits, but llgf does...

PT-2026-94943

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390/bpf component where the ly instruction is used to load the 32-bit cpu nr value into the 64-bit BPF REG 0 register. This process fails to zero the upper bits o...

CVE-2026-53110

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Zero-extend bpf prog return values and kfunc arguments s390x ABI requires callers to zero-extend unsigned arguments and sign-extend signed arguments, and callees to zero-extend unsigned return values and sign-extend...

CVE-2026-53110 s390/bpf: Zero-extend bpf prog return values and kfunc arguments

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Zero-extend bpf prog return values and kfunc arguments s390x ABI requires callers to zero-extend unsigned arguments and sign-extend signed arguments, and callees to zero-extend unsigned return values and sign-extend...

CVE-2026-53110: Integer Overflow or Wraparound

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Zero-extend bpf prog return values and kfunc arguments s390x ABI requires callers to zero-extend unsigned arguments and sign-extend signed arguments, and callees to zero-extend unsigned return values and sign-extend...

Azure Linux 3.0 Security Update: hyperv-daemons (CVE-2024-35917)

The version of hyperv-daemons installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-35917 advisory. - In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Fix bpfplt pointer...

CVE-2025-38489 s390/bpf: Fix bpf_arch_text_poke() with new_addr == NULL again

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Fix bpfarchtextpoke with newaddr == NULL again Commit 7ded842b356d "s390/bpf: Fix bpfplt pointer arithmetic" has accidentally removed the critical piece of commit c730fce7c70c "s390/bpf: Fix bpfarchtextpoke with newaddr...

CVE-2025-38489

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Fix bpfarchtextpoke with newaddr == NULL again Commit 7ded842b356d "s390/bpf: Fix bpfplt pointer arithmetic" has accidentally removed the critical piece of commit c730fce7c70c "s390/bpf: Fix bpfarchtextpoke with newaddr...

CVE-2025-38489

CVE-2025-38489: In the Linux kernel (s390/BPF), the on-disk description notes that bpf_arch_text_poke() with new_addr == NULL caused intermittent panics; the fix re‑instates the previously removed correction from commit c730fce7c70c, restoring the intended behavior and adding a clarifying comment...

CVE-2025-38489: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Fix bpfarchtextpoke with newaddr == NULL again Commit 7ded842b356d "s390/bpf: Fix bpfplt pointer arithmetic" has accidentally removed the critical piece of commit c730fce7c70c "s390/bpf: Fix bpfarchtextpoke with newaddr...