CVE-2021-47373: irqchip/gic-v3-its: Fix potential VPE leak on error
First published: Tue May 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3-its: Fix potential VPE leak on error In its_vpe_irq_domain_alloc, when its_vpe_init() returns an error, there is an off-by-one in the number of VPEs to be freed. Fix it by simply passing the number of VPEs allocated, which is the index of the loop iterating over the VPEs. [maz: fixed commit message]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.14.249 | 4.14.249 |
| redhat/kernel | <4.19.209 | 4.19.209 |
| redhat/kernel | <5.4.150 | 5.4.150 |
| redhat/kernel | <5.10.70 | 5.10.70 |
| redhat/kernel | <5.14.9 | 5.14.9 |
| redhat/kernel | <5.15 | 5.15 |
| Linux Kernel | >=4.14<4.14.249 | |
| Linux Kernel | >=4.15<4.19.209 | |
| Linux Kernel | >=4.20<5.4.150 | |
| Linux Kernel | >=5.5<5.10.70 | |
| Linux Kernel | >=5.11<5.14.9 | |
| Linux Kernel | =5.15-rc1 | |
| Linux Kernel | =5.15-rc2 | |
| 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-2021-47373
- https://lore.kernel.org/linux-cve-announce/2024052141-CVE-2021-47373-e5ff@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=2282373
- https://git.kernel.org/stable/c/7d39992d45acd6f2d6b2f62389c55b61fb3d486b
- https://git.kernel.org/stable/c/5701e8bff314c155e7afdc467b1e0389d86853d0
- https://git.kernel.org/stable/c/42d3711c23781045e7a5cd28536c774b9a66d20b
- https://git.kernel.org/stable/c/568662e37f927e3dc3e475f3ff7cf4ab7719c5e7
- https://git.kernel.org/stable/c/e0c1c2e5da19685a20557a50f10c6aa4fa26aa84
- https://git.kernel.org/stable/c/280bef512933b2dda01d681d8cbe499b98fc5bdd
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2021-47373?
CVE-2021-47373 has been classified as a moderate severity vulnerability.
How do I fix CVE-2021-47373?
To resolve CVE-2021-47373, update your Linux kernel to version 4.14.249, 4.19.209, 5.4.150, 5.10.70, 5.14.9, or 5.15.
Which Linux kernel versions are affected by CVE-2021-47373?
CVE-2021-47373 affects Linux kernel versions prior to 4.14.249, 4.19.209, 5.4.150, 5.10.70, 5.14.9, and 5.15.
What type of vulnerability is CVE-2021-47373?
CVE-2021-47373 is an off-by-one error in the Linux kernel's irqchip/gic-v3-its module.
Is CVE-2021-47373 exploitable remotely?
CVE-2021-47373 does not have remote exploitation capabilities; it requires local access for exploitation.
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