CVEvulnerability
CVE-2021-46991
7.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2024-02-28
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
Description
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 configurations
• linux linux kernel (>= 4.16 < 4.19.191)
• linux linux kernel (>= 4.20 < 5.4.120)
• linux linux kernel (>= 5.5 < 5.10.38)
• linux linux kernel (>= 5.11 < 5.11.22)
• linux linux kernel (>= 5.12 < 5.12.5)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 Patch
- https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 Patch
- https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 Patch
- https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 Patch
- https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 Patch
- https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 Patch
- https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 Patch
- https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 Patch
- https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 Patch
- https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 Patch
- https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 Patch
- https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 Patch