UBUNTU-CVE-2025-21922

In the Linux kernel, the following vulnerability has been resolved: ppp: Fix KMSAN uninit-value warning with bpf Syzbot caught an "KMSAN: uninit-value" warning 1, which is caused by the ppp driver not initializing a 2-byte header when using socket filter. The following code can generate a PPP...

CVE-2025-21965 sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()

In the Linux kernel, the following vulnerability has been resolved: schedext: Validate prevcpu in scxbpfselectcpudfl If a BPF scheduler provides an invalid CPU outside the nrcpuids range as prevcpu to scxbpfselectcpudfl it can cause a kernel crash. To prevent this, validate prevcpu in...

CVE-2025-21965 sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()

In the Linux kernel, the following vulnerability has been resolved: schedext: Validate prevcpu in scxbpfselectcpudfl If a BPF scheduler provides an invalid CPU outside the nrcpuids range as prevcpu to scxbpfselectcpudfl it can cause a kernel crash. To prevent this, validate prevcpu in...

CVE-2025-21922

In the Linux kernel, the following vulnerability has been resolved: ppp: Fix KMSAN uninit-value warning with bpf Syzbot caught an "KMSAN: uninit-value" warning 1, which is caused by the ppp driver not initializing a 2-byte header when using socket filter. The following code can generate a PPP...

CVE-2025-21922

CVE-2025-21922 concerns a Linux kernel PPP driver issue where a 2-byte header used by socket filter/BPF is not fully initialized, triggering a KMSAN “uninit-value” warning. The root cause, as described, is that only the first byte of the direction indicator is initialized while the second byte re...

CVE-2025-21922 ppp: Fix KMSAN uninit-value warning with bpf

In the Linux kernel, the following vulnerability has been resolved: ppp: Fix KMSAN uninit-value warning with bpf Syzbot caught an "KMSAN: uninit-value" warning 1, which is caused by the ppp driver not initializing a 2-byte header when using socket filter. The following code can generate a PPP...

CVE-2025-21922 ppp: Fix KMSAN uninit-value warning with bpf

In the Linux kernel, the following vulnerability has been resolved: ppp: Fix KMSAN uninit-value warning with bpf Syzbot caught an "KMSAN: uninit-value" warning 1, which is caused by the ppp driver not initializing a 2-byte header when using socket filter. The following code can generate a PPP...

PT-2025-14346 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A kernel crash can occur if a BPF scheduler provides an invalid CPU as prev cpu to the scx bpf select cpu dfl function. This issue is resolved by validating prev cpu in scx bpf select...

The vulnerability of the bpf_link_show_fdinfo() function in the kernel/bpf/syscall.c module of the Linux operating system allows a attacker to compromise the confidentiality and accessibility of the protected information.

The vulnerability of the bpflinkshowfdinfo function in the kernel/bpf/syscall.c module of the Linux operating system is related to reading beyond the buffer boundaries. Exploiting this vulnerability could allow an attacker to compromise the confidentiality and accessibility of the protected...

SUSE CVE-2023-52986

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Check for any of tcpbpfprots when cloning a listener A listening socket linked to a sockmap has its skprot overridden. It points to one of the struct proto variants in tcpbpfprots. The variant depends on the socket'...

SUSE CVE-2025-21867

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...

USN-7382-1 linux-oem-6.11 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86...

CVE-2023-52992

In the Linux kernel, the following vulnerability has been resolved: bpf: Skip task with pid=1 in sendsignalcommon The following kernel panic can be triggered when a task with pid=1 attaches a prog that attempts to send killing signal to itself, also see 1 for more details: Kernel panic - not...

CVE-2023-52986

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Check for any of tcpbpfprots when cloning a listener A listening socket linked to a sockmap has its skprot overridden. It points to one of the struct proto variants in tcpbpfprots. The variant depends on the socket'...

UBUNTU-CVE-2023-52986

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Check for any of tcpbpfprots when cloning a listener A listening socket linked to a sockmap has its skprot overridden. It points to one of the struct proto variants in tcpbpfprots. The variant depends on the socket'...

UBUNTU-CVE-2023-52928

In the Linux kernel, the following vulnerability has been resolved: bpf: Skip invalid kfunc call in backtrackinsn The verifier skips invalid kfunc call in checkkfunccall, which would be captured in fixupkfunccall if such insn is not eliminated by dead code elimination. However, this can lead to t...

UBUNTU-CVE-2023-52992

In the Linux kernel, the following vulnerability has been resolved: bpf: Skip task with pid=1 in sendsignalcommon The following kernel panic can be triggered when a task with pid=1 attaches a prog that attempts to send killing signal to itself, also see 1 for more details: Kernel panic - not...

USN-7380-1 linux-lowlatency vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - x86...

CVE-2023-53024

The CVE-2023-53024 entry concerns the Linux kernel BPF subsystem. Root cause: speculative store bypass (SSB) can cause a stack slot initially containing a pointer to be overwritten by a scalar without a subsequent lfence, enabling a potential speculative-pointer‑as‑scalar leak. The mitigation add...

CVE-2023-53024

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation To mitigate Spectre v4, 2039f26f3aca "bpf: Fix leakage due to insufficient speculative store bypass mitigation" inserts lfence instructions after 1...