CVE-2026-31750: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: comedi: runflags cannot determine whether to reclaim chanlist syzbot reported a memory leak [1], because commit 4e1da516debb ("comedi: Add reference counting for Comedi command handling") did not consider the exceptional exit case in do_cmd_ioctl() where runflags is not set. This caused chanlist not to be properly freed by do_become_nonbusy(), as it only frees chanlist when runflags is correctly set. Added a check in do_become_nonbusy() for the case where runflags is not set, to properly free the chanlist memory. [1] BUG: memory leak backtrace (crc 844a0efa): __comedi_get_user_chanlist drivers/comedi/comedi_fops.c:1815 [inline] do_cmd_ioctl.part.0+0x112/0x350 drivers/comedi/comedi_fops.c:1890 do_cmd_ioctl drivers/comedi/comedi_fops.c:1858 [inline]

Засегнати продукти

• Linux Linux: 4e1da516debbe6a573ffa0392e2809d180d0575c преди 830c848aba9f047eb6b34288975ebeb8e8621451; 4e1da516debbe6a573ffa0392e2809d180d0575c преди 29f644f14b89e6c4965e3c89251929e451190a66
• Linux Linux: 6.19; преди 6.19; 6.19.12 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31750
• https://nvd.nist.gov/vuln/detail/CVE-2026-31750
• https://git.kernel.org/stable/c/830c848aba9f047eb6b34288975ebeb8e8621451
• https://git.kernel.org/stable/c/29f644f14b89e6c4965e3c89251929e451190a66