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7.1 High

CVE-2021-47403 In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix module reference leak A…

Description

In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix module reference leak A reference to the carrier module was taken on every open but was only released once when the final reference to the tty struct was dropped. Fix this by taking the module reference and initialising the tty driver data when installing the tty.

Affected products and versions

Product Affected versions Fixed in
Linux 5.15 earliest → < 5.15 5.15
Linux 5.14 earliest → < 5.14.10 5.14.10
Linux 5.10 earliest → < 5.10.71 5.10.71
Linux 5.4 earliest → < 5.4.151 5.4.151
Linux 4.19 earliest → < 4.19.209 4.19.209
Linux 4.14 earliest → < 4.14.249 4.14.249
Linux 4.9 earliest → < 4.9.285 4.9.285
Linux 4.4 earliest → < 4.4.286 4.4.286
Linux 3.18 No fix stated
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Product Affected versions Fixed in
linux_kernel 5.15 earliest → < 5.15 5.15

References

Timeline

  1. Published
  2. Last modified

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