CVE-2025-21914

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> slimbus: messaging: Free transaction ID in delayed interrupt scenario<br /> <br /> In case of interrupt delay for any reason, slim_do_transfer()<br /> returns timeout error but the transaction ID (TID) is not freed.<br /> This results into invalid memory access inside<br /> qcom_slim_ngd_rx_msgq_cb() due to invalid TID.<br /> <br /> Fix the issue by freeing the TID in slim_do_transfer() before<br /> returning timeout error to avoid invalid memory access.<br /> <br /> Call trace:<br /> __memcpy_fromio+0x20/0x190<br /> qcom_slim_ngd_rx_msgq_cb+0x130/0x290 [slim_qcom_ngd_ctrl]<br /> vchan_complete+0x2a0/0x4a0<br /> tasklet_action_common+0x274/0x700<br /> tasklet_action+0x28/0x3c<br /> _stext+0x188/0x620<br /> run_ksoftirqd+0x34/0x74<br /> smpboot_thread_fn+0x1d8/0x464<br /> kthread+0x178/0x238<br /> ret_from_fork+0x10/0x20<br /> Code: aa0003e8 91000429 f100044a 3940002b (3800150b)<br /> ---[ end trace 0fe00bec2b975c99 ]---<br /> Kernel panic - not syncing: Oops: Fatal exception in interrupt.