UBUNTU-CVE-2025-21777

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Validate the persistent meta data subbuf array The meta data for a mapped ring buffer contains an array of indexes of all the subbuffers. The first entry is the reader page, and the rest of the entries lay out the...

UBUNTU-CVE-2025-21778

In the Linux kernel, the following vulnerability has been resolved: tracing: Do not allow mmap of persistent ring buffer When trying to mmap a trace instance buffer that is attached to reservemem, it would crash: BUG: unable to handle page fault for address: ffffe97bd00025c8 PF: supervisor read...

SUSE CVE-2022-49096

In the Linux kernel, the following vulnerability has been resolved: net: sfc: add missing xdp queue reinitialization After rx/tx ring buffer size is changed, kernel panic occurs when it acts XDPTX or XDPREDIRECT. When tx/rx ring buffer size is changedethtool -G, sfc driver reallocates and...

SUSE CVE-2022-49607

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix data race between perfeventsetoutput and perfmmapclose Yang Jihing reported a race between perfeventsetoutput and perfmmapclose: CPU1 CPU2 perfmmapclosee2 if atomicdecandtest&e2-rb-mmapcount // 1 - 0 detachrest =...

CVE-2025-21778

CVE-2025-21778 (Linux kernel) involves a crash when mmap() is used on a persistent tracing ring buffer that is attached to reserve_mem. The root cause is that the code maps ring buffer pages using virt_to_page() on memory that is vmap()’d, which is invalid for that memory type and can trigger a p...

CVE-2025-21777

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Validate the persistent meta data subbuf array The meta data for a mapped ring buffer contains an array of indexes of all the subbuffers. The first entry is the reader page, and the rest of the entries lay out the...

CVE-2025-21778 tracing: Do not allow mmap() of persistent ring buffer

In the Linux kernel, the following vulnerability has been resolved: tracing: Do not allow mmap of persistent ring buffer When trying to mmap a trace instance buffer that is attached to reservemem, it would crash: BUG: unable to handle page fault for address: ffffe97bd00025c8 PF: supervisor read...

CVE-2025-21778 tracing: Do not allow mmap() of persistent ring buffer

In the Linux kernel, the following vulnerability has been resolved: tracing: Do not allow mmap of persistent ring buffer When trying to mmap a trace instance buffer that is attached to reservemem, it would crash: BUG: unable to handle page fault for address: ffffe97bd00025c8 PF: supervisor read...

CVE-2025-21777

CVE-2025-21777 affects the Linux kernel ring-buffer metadata validation. The vulnerability stems from the subbuf index array (reader page and subbuffer order) potentially containing duplicates, which the validator did not check. If duplicates exist on the writer side, the ring buffer link list co...

CVE-2025-21777 ring-buffer: Validate the persistent meta data subbuf array

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Validate the persistent meta data subbuf array The meta data for a mapped ring buffer contains an array of indexes of all the subbuffers. The first entry is the reader page, and the rest of the entries lay out the...

CVE-2025-21777 ring-buffer: Validate the persistent meta data subbuf array

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Validate the persistent meta data subbuf array The meta data for a mapped ring buffer contains an array of indexes of all the subbuffers. The first entry is the reader page, and the rest of the entries lay out the...

CVE-2025-21778

In the Linux kernel, the following vulnerability has been resolved: tracing: Do not allow mmap of persistent ring buffer When trying to mmap a trace instance buffer that is attached to reservemem, it would crash: BUG: unable to handle page fault for address: ffffe97bd00025c8 PF: supervisor read...

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 originates in the ring buffer unvalidated persistent metadata sub-buffer array, which could lead to a crash...

PT-2025-8889 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability in the Linux kernel's ring-buffer has been identified. The issue arises from the lack of validation for duplicate entries in the meta data subbuf array, which contains...

DEBIAN-CVE-2022-49607

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix data race between perfeventsetoutput and perfmmapclose Yang Jihing reported a race between perfeventsetoutput and perfmmapclose: CPU1 CPU2 perfmmapclosee2 if atomicdecandtest&e2-rb-mmapcount // 1 - 0 detachrest =...

UBUNTU-CVE-2022-49607

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix data race between perfeventsetoutput and perfmmapclose Yang Jihing reported a race between perfeventsetoutput and perfmmapclose: CPU1 CPU2 perfmmapclosee2 if atomicdecandtest&e2-rb-mmapcount // 1 - 0 detachrest =...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Ring-buffer: Fixed a race condition between readers and resize checks. The reader code in rbgetreaderpage swaps a new reader page into the ring buffer by using cmpxchg on old-list.prev-next to point it to the new page. After that...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: BPF: Fixed an issue where reservations were advanced beyond their limit in the ringbuf structure. The BPF ring buffer is internally implemented as a circular buffer of a power-of-2 size, with two logical and ever-increasing...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: r8169: Fixed possible ring buffer corruption due to fragmented Tx packets. An issue was discovered in the RTL8125b driver when transmitting small, fragmented packets. Invalid entries were inserted into the transmit ring buffer,...

Azure Linux 3.0 Security Update: kernel (CVE-2024-41009)

The version of kernel 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-2024-41009 advisory. - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix overrunning reservations in...