CVE-2024-50203
bpf, arm64: Fix address emission with tag-based KASAN enabled
Reported by linux · Published November 8, 2024
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.
EPSS 0.23% · 14.1th percentile
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux_kernel | linux | 6.11.6, 6.11 |
| Linux | Linux | a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c, 9e80f366ebfdfafc685fe83a84c34f7ef01cbe88, 7db1a2121f3c7903b8e397392beec563c3d00950, 6.11 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 077149478497b2f00ff4fd9da2c892defa6418d8, d9664e6ff040798a46cdc5d401064f55b8676c83, 19d3c179a37730caf600a97fed3794feac2b197b |
| Linux | Linux | 6.11, 0, 6.11.6 |
| Linux | Linux | 6.10.3, 19d3c179a37730caf600a97fed3794feac2b197b, 6.11 |
| linux | linux_kernel | 6.10.3, 6.11, 6.11 |
Timeline
- Nov 7, 2024 CVE Published
- Nov 8, 2024 Coalition ESS Score (11 in total, the first dated here)
- Nov 9, 2024 EPSS Score (30 in total, the first dated here)
- Dec 16, 2025 PoC Published
- Jan 2, 2026 Security Advisory (142 in total, the first dated here)
- Apr 29, 2026 Distribution Patch (114 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2024-50203
vulnetix vdb fixes CVE-2024-50203Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2024-50203/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart