UBUNTU-CVE-2022-50253

In the Linux kernel, the following vulnerability has been resolved: bpf: make sure skb-len != 0 when redirecting to a tunneling device syzkaller managed to trigger another case where skb-len == 0 when we enter devqueuexmit: WARNING: CPU: 0 PID: 2470 at include/linux/skbuff.h:2576 skbassertlen...

CVE-2022-50253

CVE-2022-50253 is a Linux kernel issue where bpf code did not ensure skb->len was non-zero when redirecting to a tunneling device, leading to a length underflow/invalid skb handling path after __skb_pull in certain redirect paths. The vulnerability is exploited via BPF/XDP filtering paths that...

CVE-2022-50259: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: fix race in sockmapfree sockmapfree calls releasesocksk without owning a reference on the socket. This can cause use-after-free as syzbot found 1 Jakub Sitnicki already took care of a similar issue in sockhashfree i...

CVE-2022-50253: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: make sure skb-len != 0 when redirecting to a tunneling device syzkaller managed to trigger another case where skb-len == 0 when we enter devqueuexmit: WARNING: CPU: 0 PID: 2470 at include/linux/skbuff.h:2576 skbassertlen...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the failure to free an allocated bpf trampoline image when fentry attachment fails, which could lead to a...

CVE-2023-53221: Missing Release of Memory after Effective Lifetime

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix memleak due to fentry attach failure If it fails to attach fentry, the allocated bpf trampoline image will be left in the system. That can be verified by checking /proc/kallsyms. This meamleak can be verified by a simple...

Linux Distros Unpatched Vulnerability : CVE-2025-39748

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Forget ranges when refining tnum after JSET Syzbot reported a kernel warning due to a range invariant violation on the following BPF program. 0: call...

SUSE SLES12: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2025:03204-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03204-1 advisory. The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes. The following security bugs were fixed: -...

SUSE-SU-2025:03204-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2022-49967: bpf: Fix a data-race around bpfjitlimit bsc1244964. - CVE-2022-49975: bpf: Don't redirect packets with invalid pktlen bsc1245196. - CVE-2022-49980:...

SUSE CVE-2025-39744

In the Linux kernel, the following vulnerability has been resolved: rcu: Fix rcureadunlock deadloop due to IRQ work During rcureadunlockspecial, if this happens during irqexit, we can lockup if an IPI is issued. This is because the IPI itself triggers the irqexit path causing a recursive lock up...

DEBIAN-CVE-2025-39748

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

AZL-70819 CVE-2025-39748 affecting package kernel 5.15.200.1-1

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

AZL-67208 CVE-2025-39748 affecting package kernel for versions less than 6.6.130.1-3

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

CVE-2025-39748 bpf: Forget ranges when refining tnum after JSET

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

CVE-2025-39748

CVE-2025-39748 - Linux kernel BPF verifier issue (JSET) patched Root cause: A verifier range refinement bug after JSET could produce inconsistent register bounds on an unreachable path, due to not forgetting ranges after narrowing tnums post-JSET. Impact: Local access to kernel may be affected; C...

CVE-2025-39748 bpf: Forget ranges when refining tnum after JSET

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

CVE-2025-39748

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

CVE-2025-39748: Undefined Security Weakness

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

Oracle Linux 8 : kernel (ELSA-2025-15471)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-15471 advisory. - posix-cpu-timers: fix race between handleposixcputimers and posixcputimerdel Oleg Nesterov RHEL-112775 CVE-2025-38352 - bpf: Don't use tnumrange on...

PT-2025-39143

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw related to memory management within the bpf Berkeley Packet Filter subsystem. Specifically, the issue arises from calling bpf map kmalloc node from bpf...