What’s Vulnerable › Vulnerabilities

CVE-2021-47017: ath10k: Fix a use after free in ath10k_htc_send_bundle

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-28 · updated 2026-08-04
• Weakness: CWE-416

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.

Affected products

• Linux kernel: from 5.8 before 5.10.37; from 5.11 before 5.11.21; from 5.12 before 5.12.4 — fixed in 5.10.37, 5.11.21, 5.12.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.37, 5.11.21, 5.12.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71b
• https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676
• https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3
• https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65
• https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71b
• https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676
• https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3
• https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65

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