ROOT-OS-DEBIAN-12-CVE-2025-21836 CVE-2025-21836 in linux - Patched by Root

Root has patched CVE-2025-21836 in the linux package for Root:Debian:12. Multiple fixed versions available...

BELL-CVE-2025-21836

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CVE-2025-21836

creationtimestamp| type| source ---|---|--- 2025-03-07 12:25:54+00:00| seen| https://t.me/cvedetector/19812 2025-05-01 13:36:25+00:00| seen| https://bsky.app/profile/0xor0ne.bsky.social/post/3lo4gjc5bkk2f 2025-12-06 00:44:49+00:00| seen|...

CVE-2025-21836

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: reallocate buf lists on upgrade IORINGREGISTERPBUFRING can reuse an old struct iobufferlist if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field shoul...

CVE-2025-21836

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: reallocate buf lists on upgrade IORINGREGISTERPBUFRING can reuse an old struct iobufferlist if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field shoul...

CVE-2025-21836

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: reallocate buf lists on upgrade IORINGREGISTERPBUFRING can reuse an old struct iobufferlist if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field shoul...

CVE-2025-21836 io_uring/kbuf: reallocate buf lists on upgrade

In the Linux kernel, the following vulnerability has been resolved: iouring/kbuf: reallocate buf lists on upgrade IORINGREGISTERPBUFRING can reuse an old struct iobufferlist if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field shoul...

CVE-2025-21836

CVE-2025-21836 affects the Linux kernel io_uring/kbuf subsystem. The issue arises in io_register_pbuf_ring where an old io_buffer_list may be reused after upgrade, violating the expectation that most fields remain stable post-publish; the correct fix is to always reallocate the buffer list. The u...