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CVE-2021-47232

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CVE-2021-47232

Published: May 21, 2024

Modified: May 11, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: can: j1939: fix Use-after-Free, hold skb ref while in use This patch fixes a Use-after-Free found by the syzbot. The problem is that a skb is taken from the per-session skb queue, without incrementing the ref count. This leads to a Use-after-Free if the skb is taken concurrently from the session queue due to a CTS.

VendorProductVersions

Linux

Linux

affected
9d71dd0c70099914fcd063135da3c580865e924c - < 22cba878abf646cd3a02ee7c8c2cef7afe66a256
affected
9d71dd0c70099914fcd063135da3c580865e924c - < 509ab6bfdd0c76daebbad0f0af07da712116de22
affected
9d71dd0c70099914fcd063135da3c580865e924c - < 1071065eeb33d32b7d98c2ce7591881ae7381705
affected
9d71dd0c70099914fcd063135da3c580865e924c - < 2030043e616cab40f510299f09b636285e0a3678

Linux

Linux

affected
5.4
unaffected
0 - < 5.4
unaffected
5.4.128 - <= 5.4.*
unaffected
5.10.46 - <= 5.10.*
unaffected
5.12.13 - <= 5.12.*

+1 more versions

References

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