CVE-2021-46991: i40e: Fix use-after-free in i40e_client_subtask()
First published: Wed Feb 28 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix use-after-free in i40e_client_subtask() Currently the call to i40e_client_del_instance frees the object pf->cinst, however pf->cinst->lan_info is being accessed after the free. Fix this by adding the missing return. Addresses-Coverity: ("Read from pointer after free")
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.16<4.19.191 | |
| Linux Kernel | >=4.20<5.4.120 | |
| Linux Kernel | >=5.5<5.10.38 | |
| Linux Kernel | >=5.11<5.11.22 | |
| Linux Kernel | >=5.12<5.12.5 |
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Reference Links
- https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84
- https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132
- https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107
- https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1
- https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323
- https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3
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