CVE-2024-50203 remediation guide
Linux Linux, linux kernel
In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix address emission with tag-based KASAN enabled When BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image struct on the stack is passed during the size calculation pass and an address on the heap is passed during code generation. This may cause a heap buffer overflow if the heap address is tagged because emit_a64_mov_i64() will emit longer code than it did during the size calculation pass. The same problem could occur without tag-based KASAN if one of the 16-bit words of the stack address happene...
Identify the affected asset
Confirm whether Linux Linux, linux kernel is installed, record the deployed version and installation path, and identify exposed interfaces.
- Record the product name, package or appliance identifier, and installed version.
- Identify internet-facing, administrative, API, and internal access paths.
- Preserve the pre-change configuration and relevant service logs.
Validate the affected-version match
Compare the deployed version with the affected range: >= 077149478497b2f00ff4fd9da2c892defa6418d8 < 9e80f366ebfdfafc685fe83a84c34f7ef01cbe88, >= d9664e6ff040798a46cdc5d401064f55b8676c83 < f521c2a0c0c4585f36d912bf62c852b88682c4f2, >= 19d3c179a37730caf600a97fed3794feac2b197b < 7db1a2121f3c7903b8e397392beec563c3d00950, >= 19d3c179a37730caf600a97fed3794feac2b197b < a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c, >= 6d218fcc707d6b2c3616b6cd24b948fd4825cfec, >= 6.10.3 < 6.11, >= 6.11, >= 6.11 < 6.11.6, 6.12. Treat incomplete inventory results as unresolved.
Prioritize with independent signals
The CVSS severity warrants an early asset and exposure review. Combine this signal with asset criticality, exposure, compensating controls, and business impact.
Apply supported remediation
Follow the vendor advisory or supported update path. Current fixed-version status: 6.11, 6.11.6. Preserve configuration and rollback material before change.
Verify the result
Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.
- Confirm the expected version and package state.
- Run a functional health check for critical service paths.
- Review authentication, error, application, and security monitoring logs.
- Reassess exposure if the supported fix cannot be applied.
Operational boundary
This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.