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-2025-21777 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 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-2025-21778

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...

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: Undefined Security Weakness

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...

CVE-2025-21777: Undefined Security Weakness

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...

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 =...

PT-2025-8889

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...

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...

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...

CVE-2024-56368

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix overflow in rbmapvma An overflow occurred when performing the following calculation: nrpages = nrsubbufs + 1 subbuforder - pgoff; Add a check before the calculation to avoid this problem. syzbot reported this as ...

SUSE CVE-2024-56368

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix overflow in rbmapvma An overflow occurred when performing the following calculation: nrpages = nrsubbufs + 1 dumpstack lib/dumpstack.c:94 inline dumpstacklvl+0x116/0x1f0 lib/dumpstack.c:120 printaddressdescriptio...

DEBIAN-CVE-2024-56368

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix overflow in rbmapvma An overflow occurred when performing the following calculation: nrpages = nrsubbufs + 1 dumpstack lib/dumpstack.c:94 inline dumpstacklvl+0x116/0x1f0 lib/dumpstack.c:120 printaddressdescriptio...

CVE-2024-56368

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix overflow in rbmapvma An overflow occurred when performing the following calculation: nrpages = nrsubbufs + 1 dumpstack lib/dumpstack.c:94 inline dumpstacklvl+0x116/0x1f0 lib/dumpstack.c:120 printaddressdescriptio...

UBUNTU-CVE-2024-56368

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix overflow in rbmapvma An overflow occurred when performing the following calculation: nrpages = nrsubbufs + 1 dumpstack lib/dumpstack.c:94 inline dumpstacklvl+0x116/0x1f0 lib/dumpstack.c:120 printaddressdescriptio...