CVE-2021-47017
In the Linux kernel, the following vulnerability has been resolved: ath10k: Fix a use after free in ath10k_htc_send_bundle In ath10k_htc_send_bundle, the bundle_skb could be freed by dev_kfree_skb_any(bundle_skb).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). 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: ath10k: Fix a use after free in ath10k_htc_send_bundle In ath10k_htc_send_bundle, the bundle_skb could be freed by dev_kfree_skb_any(bundle_skb). But the bundle_skb is used later by bundle_skb->len. As skb_len = bundle_skb->len, my patch replaces bundle_skb->len to skb_len after the bundle_skb was freed.
- 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
- 0.34% probability · 27th 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/3b1ac40c6012140828caa79e592a438a18ebf71bPatch
- https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676Patch
- https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3Patch
- https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65Patch
- https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71bPatch
- https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676Patch
- https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3Patch
- https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.