EulerOS 2.0 SP9 : kernel (EulerOS-SA-2023-2335)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A deadlock flaw was found in the Linux kernel's BPF subsystem. This flaw allows a local user to potentially crash the system. CVE-2023-0160 - Us...

CVE-2023-2163

Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape...

Important: kernel

Issue Overview: In the Linux kernel through 6.2.7, fs/ntfs3/inode.c has an invalid kfree because it does not validate MFT flags before replaying logs. CVE-2022-48425 In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF of alloc-vma in race with munmap CVE-2022-50240...

Medium: kernel

Issue Overview: bpf: incorrect verifier pruning due to missing register precision taints, which may lead to out-of-band read/write access due to an incorrect verifier conclusion. CVE-2023-2163 A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the...

Medium: kernel

Issue Overview: bpf: incorrect verifier pruning due to missing register precision taints, which may lead to out-of-band read/write access due to an incorrect verifier conclusion. CVE-2023-2163 A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the...

New Variant of BPFDoor Linux Malware Features Enhanced Encryption and Stealthy Communication

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary A new variant of the Linux malware BPFDoor has been discovered, featuring more robust encryption and reverse shell communication. It uses the BPF to bypass firewall restrictions, allowing threat actors t...

kernel: bpf, sockmap: Fix more uncharged while msg has more_data

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix more uncharged while msg has moredata In tcpbpfsendverdict, if msg has more data after tcpbpfsendmsgredir: tcpbpfsendverdict tosend = msg-sg.size //msg-sg.size = 22220 case SKREDIRECT: skmsgreturn //uncharged...

kernel: bpf: Don't use tnum_range on array range checking for poke descriptors

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't use tnumrange on array range checking for poke descriptors Hsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which is based on a customized syzkaller: BUG: KASAN: slab-out-of-bounds in...

kernel: bpf, x86: fix freeing of not-finalized bpf_prog_pack

In the Linux kernel, the following vulnerability has been resolved: bpf, x86: fix freeing of not-finalized bpfprogpack syzbot reported a few issues with bpfprogpack 1, 2. This only happens with multiple subprogs. In jitsubprogs, we first call bpfintjitcompile on each sub program. And then, we cal...

kernel: BPF: Fix potential bad pointer dereference in bpf_sys_bpf()

In the Linux kernel, the following vulnerability has been resolved: BPF: Fix potential bad pointer dereference in bpfsysbpf The bpfsysbpf helper function allows an eBPF program to load another eBPF program from within the kernel. In this case the argument union bpfattr pointer as well as the insn...

kernel: bpf, cgroup: Fix kernel BUG in purge_effective_progs

In the Linux kernel, the following vulnerability has been resolved: bpf, cgroup: Fix kernel BUG in purgeeffectiveprogs Syzkaller reported a triggered kernel BUG as follows: ------------ cut here ------------ kernel BUG at kernel/bpf/cgroup.c:925! invalid opcode: 0000 1 PREEMPT SMP NOPTI CPU: 1 PI...

kernel: bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()

In the Linux kernel, the following vulnerability has been resolved: bpf, testrun: Fix use-after-free issue in ethskbpkttype KMSAN reported a use-after-free issue in ethskbpkttype1. The cause of the issue was that ethskbpkttype accessed skb's data that didn't contain an Ethernet header. This occur...

kernel: bpf, sockmap: Fix double uncharge the mem of sk_msg

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix double uncharge the mem of skmsg If tcpbpfsendmsg is running during a tear down operation, psock may be freed. tcpbpfsendmsg tcpbpfsendverdict skmsgreturn tcpbpfsendmsgredir unlikely!psock skmsgfree The mem of m...

PT-2025-26094

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved, related to the freeing of not-finalized bpf prog pack. The issue occurs when there are multiple subprogs and jit subprogs is called...

PT-2025-54158

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A buffer overflow issue was identified and resolved in the tcp basertt function within the samples/bpf module of the Linux kernel. The issue stemmed from incorrect size calculations when...

Firejail: Local Privilege Escalation

Background A SUID program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces and seccomp-bpf. Description Firejail does not sufficiently validate the user's environment prior to using it as the root user when using th...

EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2023-1637)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2capcore.c's l2capparseconfreq function which can be used t...

PT-2023-2068

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to a deadlock flaw in the Linux kernel's BPF subsystem, which can be exploited by a local user to potentially crash the system. Additionally, there is a problem with...

CBL Mariner 2.0 Security Update: kernel (CVE-2022-2905)

The version of kernel installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-2905 advisory. - An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the...

CBL Mariner 2.0 Security Update: kernel (CVE-2022-2785)

The version of kernel installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-2785 advisory. - There exists an arbitrary memory read within the Linux Kernel BPF - Constants provided to fill pointers in...