CVE-2021-47304: tcp: fix tcp_init_transfer() to not reset icsk_ca_initialized
First published: Tue May 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: tcp: fix tcp_init_transfer() to not reset icsk_ca_initialized The Linux kernel CVE team has assigned <a href="https://access.redhat.com/security/cve/CVE-2021-47304">CVE-2021-47304</a> to this issue. Upstream advisory: <a href="https://lore.kernel.org/linux-cve-announce/2024052126-CVE-2021-47304-fc16@gregkh/T">https://lore.kernel.org/linux-cve-announce/2024052126-CVE-2021-47304-fc16@gregkh/T</a>
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.10.53 | 5.10.53 |
| redhat/kernel | <5.13.5 | 5.13.5 |
| redhat/kernel | <5.14 | 5.14 |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 |
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Reference Links
- https://git.kernel.org/stable/c/ad4ba3404931745a5977ad12db4f0c34080e52f7
- https://git.kernel.org/stable/c/be5d1b61a2ad28c7e57fe8bfa277373e8ecffcdc
- https://git.kernel.org/stable/c/fe77b85828ca9ddc42977b79de9e40d18545b4fe
- https://access.redhat.com/security/cve/CVE-2021-47304
- https://lore.kernel.org/linux-cve-announce/2024052126-CVE-2021-47304-fc16@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://bugzilla.redhat.com/show_bug.cgi?id=2282479
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2021-47304?
CVE-2021-47304 has a severity rating that necessitates attention due to potential impacts on the Linux kernel's TCP functions.
How do I fix CVE-2021-47304?
To fix CVE-2021-47304, update the Linux kernel to version 5.10.53, 5.13.5, or 5.14 as applicable.
Which software is affected by CVE-2021-47304?
CVE-2021-47304 affects various versions of the Linux kernel and IBM Security Verify Governance products.
What are the risks of not addressing CVE-2021-47304?
Failing to address CVE-2021-47304 may lead to network instability and potential security vulnerabilities within the Linux kernel.
Is CVE-2021-47304 publicly disclosed?
Yes, CVE-2021-47304 has been publicly disclosed by the Linux kernel CVE team.
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