CVE-2021-46911
CVE-2021-46911 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (13th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2021-33559
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
Description
In the Linux kernel, the following vulnerability has been resolved: ch_ktls: Fix kernel panic Taking page refcount is not ideal and causes kernel panic sometimes. It's better to take tx_ctx lock for the complete skb transmit, to avoid page cleanup if ACK received in middle.
Frequently asked questions
- What is CVE-2021-46911?
- In the Linux kernel, the following vulnerability has been resolved: ch_ktls: Fix kernel panic Taking page refcount is not ideal and causes kernel panic sometimes. It's better to take tx_ctx lock for the complete skb transmit, to avoid page cleanup if ACK received in middle.
- How severe is CVE-2021-46911?
- CVE-2021-46911 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-46911 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-46911?
- CVE-2021-46911 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-46911?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2021-46911 have an EU (EUVD) identifier?
- Yes. CVE-2021-46911 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-33559.
- When was CVE-2021-46911 published?
- CVE-2021-46911 was published on 2024-02-27 and last updated on 2026-06-17.
References
- https://git.kernel.org/stable/c/1a73e427b824133940c2dd95ebe26b6dce1cbf10
- https://git.kernel.org/stable/c/8348665d4181c68b0ca1205b48e1753d78bc810f
- https://git.kernel.org/stable/c/8d5a9dbd2116a852f8f0f91f6fbc42a0afe1091f
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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