CVE-2021-47185: tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc
First published: Wed Apr 10 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc The Linux kernel CVE team has assigned <a href="https://access.redhat.com/security/cve/CVE-2021-47185">CVE-2021-47185</a> to this issue. Upstream advisory: <a href="https://lore.kernel.org/linux-cve-announce/2024041033-CVE-2021-47185-c363@gregkh/T">https://lore.kernel.org/linux-cve-announce/2024041033-CVE-2021-47185-c363@gregkh/T</a>
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.4.293 | 4.4.293 |
| redhat/kernel | <4.9.291 | 4.9.291 |
| redhat/kernel | <4.14.256 | 4.14.256 |
| redhat/kernel | <4.19.218 | 4.19.218 |
| redhat/kernel | <5.4.162 | 5.4.162 |
| redhat/kernel | <5.10.82 | 5.10.82 |
| redhat/kernel | <5.15.5 | 5.15.5 |
| redhat/kernel | <5.16 | 5.16 |
| Linux Kernel | <4.4.293 | |
| Linux Kernel | >=4.5<4.9.291 | |
| Linux Kernel | >=4.10<4.14.256 | |
| Linux Kernel | >=4.15<4.19.218 | |
| Linux Kernel | >=4.20<5.4.162 | |
| Linux Kernel | >=5.5<5.10.82 | |
| Linux Kernel | >=5.11<5.15.5 | |
| 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://access.redhat.com/security/cve/CVE-2021-47185
- https://lore.kernel.org/linux-cve-announce/2024041033-CVE-2021-47185-c363@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2274624
- https://git.kernel.org/stable/c/0380f643f3a7a61b0845cdc738959c2ad5735d61
- https://git.kernel.org/stable/c/b1ffc16ec05ae40d82b6e373322d62e9d6b54fbc
- https://git.kernel.org/stable/c/4c1623651a0936ee197859824cdae6ebbd04d3ed
- https://git.kernel.org/stable/c/4f300f47dbcf9c3d4b2ea76c8554c8f360400725
- https://git.kernel.org/stable/c/d491c84df5c469dd9621863b6a770b3428137063
- https://git.kernel.org/stable/c/77e9fed33056f2a88eba9dd4d2d5412f0c7d1f41
- https://git.kernel.org/stable/c/5c34486f04700f1ba04907231dce0cc2705c2d7d
- https://git.kernel.org/stable/c/3968ddcf05fb4b9409cd1859feb06a5b0550a1c1
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2021-47185?
CVE-2021-47185 has been classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2021-47185?
To address CVE-2021-47185, update your kernel to one of the fixed versions: 4.4.293, 4.9.291, 4.14.256, 4.19.218, 5.4.162, 5.10.82, 5.15.5, or 5.16.
What systems are affected by CVE-2021-47185?
CVE-2021-47185 affects specific versions of the Linux kernel running on various systems.
Is CVE-2021-47185 exploitable remotely?
CVE-2021-47185 does not appear to be directly exploitable remotely and requires local access.
When was CVE-2021-47185 announced?
CVE-2021-47185 was announced as a resolved issue in the Linux kernel by the CVE team.
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