CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HIn the Linux kernel, the following vulnerability has been resolved: scsi: imm: Fix use-after-free bug caused by unfinished delayed work The delayed work item 'imm_tq' is initialized in imm_attach() and scheduled via imm_queuecommand() for processing SCSI commands. When the IMM parallel port SCSI host adapter is detached through imm_detach(), the imm_struct device instance is deallocated. However, the delayed work might still be pending or executing when imm_detach() is called, leading to use-after-free bugs when the work function imm_interrupt() accesses the already freed imm_struct memory. The race condition can occur as follows: CPU 0(detach thread) | CPU 1 | imm_queuecommand() | imm_queuecommand_lck() imm_detach() | schedule_delayed_work() kfree(dev) //FREE | imm_interrupt() | dev = container_of(...) //USE dev-> //USE Add disable_delayed_work_sync() in imm_detach() to guarantee proper cancellation of the delayed work item before imm_struct is deallocated. A flaw was found in the Linux kernel. A local user could trigger a use-after-free vulnerability in the Intelligent Multi-Master (IMM) parallel port SCSI host adapter. This occurs due to a race condition where a delayed work item might still be active when the adapter is detached, leading to attempts to access freed memory. Successful exploitation can result in a denial of service.
Multiple vulnerabilities have been discovered in the SUSE Linux kernel. These vulnerabilities can lead to privilege escalation, denial of service, and data confidentiality breaches. The affected products range from deskt…