VulnerabilityAnalyzed
CVE-2021-47311
In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call.
HIGH 7.8EPSS 0.25%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.25% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7Patch
- https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048cPatch
- https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81Patch
- https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839Patch
- https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4Patch
- https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2dPatch
- https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833Patch
- https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7Patch
- https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048cPatch
- https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81Patch
- https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839Patch
- https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4Patch
- https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2dPatch
- https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.