Description
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe() I got a null-ptr-deref report: BUG: kernel NULL pointer dereference, address: 0000000000000000 ... RIP: 0010:fb_destroy_modelist+0x38/0x100 ... Call Trace: ufx_usb_probe.cold+0x2b5/0xac1 [smscufx] usb_probe_interface+0x1aa/0x3c0 [usbcore] really_probe+0x167/0x460 ... ret_from_fork+0x1f/0x30 If fb_alloc_cmap() fails in ufx_usb_probe(), fb_destroy_modelist() will be called to destroy modelist in the error handling path. But modelist has not been initialized yet, so it will result in null-ptr-deref. Initialize modelist before calling fb_alloc_cmap() to fix this bug.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < d1b6a1f0c23b7164250479bf92e2893291dca539affected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < 0fd28daec73525382e5c992db8743bf76e42cd5caffected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4baffected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < da8b269cc0a2526ebeaccbe2484c999eb0f822cfaffected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < 64ec3e678d76419f207b9cdd338dda438ca10b1caffected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < c420b540db4b5d69de0a36d8b9d9a6a79a04f05aaffected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < d396c651e2b508b6179bb678cc029f3becbf5170affected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < 9280ef235b05e8f19f8bc6d547b992f0a0ef398daffected3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to < 1791f487f877a9e83d81c8677bd3e7b259e7cb27affected
Linux Linux
Default version status: affected
3.2affected0 to < 3.2unaffected4.9.311 to ≤ 4.9.*unaffected4.14.276 to ≤ 4.14.*unaffected4.19.238 to ≤ 4.19.*unaffected5.4.189 to ≤ 5.4.*unaffected5.10.110 to ≤ 5.10.*unaffected5.15.33 to ≤ 5.15.*unaffected5.16.19 to ≤ 5.16.*unaffected5.17.2 to ≤ 5.17.*unaffected5.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d1b6a1f0c23b7164250479bf92e2893291dca539 ↗
- https://git.kernel.org/stable/c/0fd28daec73525382e5c992db8743bf76e42cd5c ↗
- https://git.kernel.org/stable/c/dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b ↗
- https://git.kernel.org/stable/c/da8b269cc0a2526ebeaccbe2484c999eb0f822cf ↗
- https://git.kernel.org/stable/c/64ec3e678d76419f207b9cdd338dda438ca10b1c ↗
- https://git.kernel.org/stable/c/c420b540db4b5d69de0a36d8b9d9a6a79a04f05a ↗
- https://git.kernel.org/stable/c/d396c651e2b508b6179bb678cc029f3becbf5170 ↗
- https://git.kernel.org/stable/c/9280ef235b05e8f19f8bc6d547b992f0a0ef398d ↗
- https://git.kernel.org/stable/c/1791f487f877a9e83d81c8677bd3e7b259e7cb27 ↗