Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — bpf: Check the remaining info_cnt before repeating btf fields
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0020 10.2 —
AFFECTED
Product Versions Fixed
Linux 64e8ee814819f21beeeda00d4119221443d77992 – —
Linux 6.11 – 6.11.6
TIMELINE
Oct 21 Reserved by Linux
Nov 7 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2024-50161 (Linux). CVSS 7.8 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Check the remaining info_cnt before repeating btf fields
When trying to repeat the btf fields for array of nested struct, it
doesn't check the remaining info_cnt. The following splat will be
reported when the value of ret * nelems is greater than BTF_FIELDS_MAX:
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in ../kernel/bpf/btf.c:3951:49
index 11 is out of range for type 'btf_field_info [11]'
CPU: 6 UID: 0 PID: 411 Comm: test_progs ...... 6.11.0-rc4+ #1
Tainted: [O]=OOT_MODULE
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ...
Call Trace:
<TASK>
dump_stack_lvl+0x57/0x70
dump_stack+0x10/0x20
ubsan_epilogue+0x9/0x40
__ubsan_handle_out_of_bounds+0x6f/0x80
? kallsyms_lookup_name+0x48/0xb0
btf_parse_fields+0x992/0xce0
map_create+0x591/0x770
__sys_bpf+0x229/0x2410
__x64_sys_bpf+0x1f/0x30
x64_sys_call+0x199/0x9f0
do_syscall_64+0x3b/0xc0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
RIP: 0033:0x7fea56f2cc5d
......
</TASK>
---[ end trace ]---
Fix it by checking the remaining info_cnt in btf_repeat_fields() before
repeating the btf fields.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| October 21, 2024 | Reserved | Reserved by Linux |
| November 7, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-50161 (Linux). CVSS 7.8 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 64e8ee814819f21beeeda00d4119221443d77992 | — |
| Linux | Linux | — | 6.11 | 6.11.6 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-50161 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.