Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iio: accel: bmc150: Fix irq assumption regression The code in bmc150-accel-core.c unconditionally calls bmc150_accel_set_interrupt() in the iio_buffer_setup_ops, such as on the runtime PM resume path giving a kernel splat like this if the device has no interrupts: Unable to handle kernel NULL pointer dereference at virtual address 00000001 when read PC is at bmc150_accel_set_interrupt+0x98/0x194 LR is at __pm_runtime_resume+0x5c/0x64 (...) Call trace: bmc150_accel_set_interrupt from bmc150_accel_buffer_postenable+0x40/0x108 bmc150_accel_buffer_postenable from __iio_update_buffers+0xbe0/0xcbc __iio_update_buffers from enable_store+0x84/0xc8 enable_store from kernfs_fop_write_iter+0x154/0x1b4 This bug seems to have been in the driver since the beginning, but it only manifests recently, I do not know why. Store the IRQ number in the state struct, as this is a common pattern in other drivers, then use this to determine if we have IRQ support or not.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c16bff4844ffa678ba0c9d077e9797506924ccdd before aad9d048a3211c48ec02efa405bf462856feb862; affected c16bff4844ffa678ba0c9d077e9797506924ccdd before c891f504bb66604c822e7985e093cf39b97fdeb0; affected c16bff4844ffa678ba0c9d077e9797506924ccdd before cdd4a9e98004bd7c7488311951fa6dbae38b2b80; affected c16bff4844ffa678ba0c9d077e9797506924ccdd before 65ad4ed983fd9ee0259d86391d6a53f78203918c; affected c16bff4844ffa678ba0c9d077e9797506924ccdd before 93eaa5ddc5fc4f50ac396afad8ce261102ebd4f3; affected c16bff4844ffa678ba0c9d077e9797506924ccdd before 3aa385a9c75c09b59dcab2ff76423439d23673ab |
| Linux / Linux | affected 4.2; unaffected 0 before 4.2; unaffected 5.15.197 through 5.15.*; unaffected 6.1.159 through 6.1.*; unaffected 6.6.119 through 6.6.*; unaffected 6.12.61 through 6.12.*; unaffected 6.17.11 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/aad9d048a3211c48ec02efa405bf462856feb862
- https://git.kernel.org/stable/c/c891f504bb66604c822e7985e093cf39b97fdeb0
- https://git.kernel.org/stable/c/cdd4a9e98004bd7c7488311951fa6dbae38b2b80
- https://git.kernel.org/stable/c/65ad4ed983fd9ee0259d86391d6a53f78203918c
- https://git.kernel.org/stable/c/93eaa5ddc5fc4f50ac396afad8ce261102ebd4f3
- https://git.kernel.org/stable/c/3aa385a9c75c09b59dcab2ff76423439d23673ab