CVE 2023-1076
A flaw was found in the Linux Kernel. The tun/tap sockets have their socket UID hardcoded to 0 due to a type confusion in their initialization function. While it will be often correct, as tuntap devices require CAP_NET_ADMIN, it may not always be the case, e.g., a non-root user only having that capability. This would make tun/tap sockets being incorrectly treated in filtering/routing decisions, possibly bypassing network filters.
Related bugs and status
CVE-2023-1076 (Candidate) is related to these bugs:
Bug #2034204: jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker
Summary | In | Importance | Status | |||
---|---|---|---|---|---|---|
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow automated-testing | Medium | Invalid | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow boot-testing | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow certification-testing | Medium | Invalid | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow kernel-signoff | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow new-review | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow prepare-package | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow prepare-package-generate | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow prepare-package-lrg | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow prepare-package-lrm | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow prepare-package-lrs | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow prepare-package-meta | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow prepare-package-signed | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow promote-signing-to-proposed | Medium | Invalid | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow promote-to-proposed | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow promote-to-security | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow promote-to-updates | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow regression-testing | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow security-signoff | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow sru-review | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | Kernel SRU Workflow verification-testing | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | linux-oem-6.0 (Ubuntu Jammy) | Medium | Fix Released | ||
2034204 | jammy/linux-oem-6.0: 6.0.0-1021.21 -proposed tracker | canonical-signing-jobs task00 | Medium | Fix Released |
See the
CVE page on Mitre.org
for more details.