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PUBLISHED

CVE-2021-47172

iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers

Reserved:2024-03-25
Published:2024-03-25
Updated:2024-04-04

Description

In the Linux kernel, the following vulnerability has been resolved: iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers Channel numbering must start at 0 and then not have any holes, or it is possible to overflow the available storage. Note this bug was introduced as part of a fix to ensure we didn't rely on the ordering of child nodes. So we need to support arbitrary ordering but they all need to be there somewhere. Note I hit this when using qemu to test the rest of this series. Arguably this isn't the best fix, but it is probably the most minimal option for backporting etc. Alexandru's sign-off is here because he carried this patch in a larger set that Jonathan then applied.

Product status

Default status
unaffected

5408cbc63373 before f49149964d24
affected

d7857e4ee1ba before f70122825076
affected

d7857e4ee1ba before 26da8040eccc
affected

d7857e4ee1ba before f2a772c51206
affected

Default status
affected

5.5
affected

Any version before 5.5
unaffected

5.4.124
unaffected

5.10.42
unaffected

5.12.9
unaffected

5.13
unaffected

References

https://git.kernel.org/stable/c/f49149964d2423fb618fb6b755bb1eaa431cca2c

https://git.kernel.org/stable/c/f70122825076117787b91e7f219e21c09f11a5b9

https://git.kernel.org/stable/c/26da8040eccc6c6b0e415e9a3baf72fd39eb2fdc

https://git.kernel.org/stable/c/f2a772c51206b0c3f262e4f6a3812c89a650191b

cve.org CVE-2021-47172

nvd.nist.gov CVE-2021-47172

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