7.8
CWE
119 787
Advisory Published
Updated

CVE-2024-50203: bpf, arm64: Fix address emission with tag-based KASAN enabled

First published: Fri Nov 08 2024(Updated: )

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 happened to be all-ones during the size calculation pass. Fix the problem by assuming the worst case (4 instructions) when calculating the size of the bpf_tramp_image address emission.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
Linux Kernel>=6.10.3<6.11
Linux Kernel>=6.11<6.11.6
Linux Kernel=6.12-rc1
Linux Kernel=6.12-rc2
Linux Kernel=6.12-rc3
Linux Kernel=6.12-rc4
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.128-1
6.12.20-1
6.12.21-1

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of CVE-2024-50203?

    CVE-2024-50203 has not been assigned a specific severity rating, but it impacts various versions of the Linux kernel.

  • How do I fix CVE-2024-50203?

    To resolve CVE-2024-50203, users should upgrade to a patched version of the Linux kernel that addresses this vulnerability.

  • Which versions of the Linux kernel are affected by CVE-2024-50203?

    CVE-2024-50203 affects Linux kernel versions from 6.10.3 to 6.11, as well as specific release candidates of version 6.12.

  • What kind of vulnerability is CVE-2024-50203?

    CVE-2024-50203 is a vulnerability in the Linux kernel's BPF subsystem related to address emission when tag-based KASAN is enabled.

  • Is CVE-2024-50203 exploitable in a production environment?

    The exploitability of CVE-2024-50203 in a production environment depends on the specific use case and configuration of the affected kernel versions.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203