CVE-2021-46991

i40e: Fix use-after-free in i40e_client_subtask()

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

28 Feb 2024Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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")

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132