CVE-2021-47652
EUVD-2021-3465326.02.2025, 06:37
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.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| linux | linux_kernel | 3.2 ≤ 𝑥 < 4.9.311 |
| linux | linux_kernel | 4.10 ≤ 𝑥 < 4.14.276 |
| linux | linux_kernel | 4.15 ≤ 𝑥 < 4.19.238 |
| linux | linux_kernel | 4.20 ≤ 𝑥 < 5.4.189 |
| linux | linux_kernel | 5.5 ≤ 𝑥 < 5.10.110 |
| linux | linux_kernel | 5.11 ≤ 𝑥 < 5.15.33 |
| linux | linux_kernel | 5.16 ≤ 𝑥 < 5.16.19 |
| linux | linux_kernel | 5.17 ≤ 𝑥 < 5.17.2 |
𝑥
= Vulnerable software versions
Debian Releases
openSUSE / SLES Releases
openSUSE Product | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| cluster-md-kmp-default |
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| dlm-kmp-default |
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| gfs2-kmp-default |
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| kernel-64kb |
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| kernel-default |
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| kernel-default-base |
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| kernel-default-man |
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| kernel-docs |
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| kernel-macros |
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| kernel-obs-build |
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| kernel-preempt |
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| kernel-source |
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| kernel-syms |
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| kernel-zfcpdump |
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| ocfs2-kmp-default |
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| reiserfs-kmp-default |
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Common Weakness Enumeration
References