Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed the stackmap overflow check in bpfgetstackid Syzkaller reported a KASAN vulnerability related to out-of-bounds write operations in bpfgetstackid, when copying stack trace data. This issue occurs when the perf trace...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed a UAF issue in bpftrampolinelinkcgroupshim. The root cause of this bug is that when bpflinkput reduces the refcount of shimlink-link.link to zero, the resource is considered released, but it may still be referenced via...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Sign extension of kfunc call arguments kfunc calls are native calls, so they should follow LoongArch calling conventions. Sign extension of arguments should be performed properly to avoid kernel panic. This is...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: bpf: crypto: Use the correct destructor kfunc type. With CONFIGCFI enabled, the kernel strictly ensures that indirect function calls use a function pointer type that matches the target function. I encountered the following typ...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: veth: The XDP function has its return section reduced to nodirect to address a race condition. As explained in the commit fa349e396e48 “veth: Fixed a race condition involving AFXDP, which exposes old or uninitialized descriptors”...

CVE-2026-52938

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpfskstorageclone and diag paths bpfselemunlinknofail sets SDATAselem-smap to NULL before removing the selem from the storage hlist. A concurrent RCU reader in bpfskstorageclone can observe th...

UBUNTU-CVE-2026-52938

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpfskstorageclone and diag paths bpfselemunlinknofail sets SDATAselem-smap to NULL before removing the selem from the storage hlist. A concurrent RCU reader in bpfskstorageclone can observe th...

CVE-2026-52938 bpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpfskstorageclone and diag paths bpfselemunlinknofail sets SDATAselem-smap to NULL before removing the selem from the storage hlist. A concurrent RCU reader in bpfskstorageclone can observe th...

CVE-2026-52938

CVE-2026-52938 concerns a race in Linux kernel BPF storage: bpf_selem_unlink_nofail() clears smap before removal, allowing a concurrent reader in bpf_sk_storage_clone() to observe a NULL smap and dereference a NULL pointer, potentially crashing the kernel (DoS). Reports describe a null-ptr-deref ...

CVE-2026-52938

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpfskstorageclone and diag paths bpfselemunlinknofail sets SDATAselem-smap to NULL before removing the selem from the storage hlist. A concurrent RCU reader in bpfskstorageclone can observe th...

CVE-2026-52938 bpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpfskstorageclone and diag paths bpfselemunlinknofail sets SDATAselem-smap to NULL before removing the selem from the storage hlist. A concurrent RCU reader in bpfskstorageclone can observe th...

EUVD-2026-38708

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpfskstorageclone and diag paths bpfselemunlinknofail sets SDATAselem-smap to NULL before removing the selem from the storage hlist. A concurrent RCU reader in bpfskstorageclone can observe th...

PT-2026-51983

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists when querying information for an offloaded BPF map or program. The functions bpf map offload info fill ns and bpf prog offload info fill ns use get netdev...

PT-2026-51731

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL pointer dereference exists in the BPF Berkeley Packet Filter subsystem. The function bpf selem unlink nofail sets the smap variable to NULL before removing the element from the...

PT-2026-51978

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A lock ordering problem exists in the BPF subsystem when using the task vma iterator. Holding the per-VMA lock across the BPF program body can lead to a deadlock when helpers attempt to...

PT-2026-52004

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390 BPF JIT Just-In-Time compiler, which is a component that translates BPF bytecode into native machine code for faster execution. The s390x ABI Application Bina...

Linux Distros Unpatched Vulnerability : CVE-2026-52938

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: bpf: Fix NULL pointer dereference in bpfskstorageclone and diag paths bpfselemunlinknofail...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-38549: efivarfs: Fix memory leak of efivarfsfsinfo in fscontext error paths bsc1248235. CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished...

SUSE CVE-2026-52910

In the Linux kernel, the following vulnerability has been resolved: bpf: Free reuseport cBPF prog after RCU grace period. Eulgyu Kim reported the splat below with a repro. 0 The repro sets up a UDP reuseport group with a cBPF prog and replaces it with a new one while another thread is sending a U...

CVE-2026-52910

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF reuseport mechanism. When a cBPF program is detached from a reuseport group, it is freed immediately without waiting for Read-Copy-Update RCU readers to complete. This can lead to a use-after-free condition, resulting in memory...