Answer in brief
CVE-2025-68208 records a High severity (CVSS 7.8) vulnerability in bpf: account for current allocated stack depth in widen_imprecise_scalars(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ab470fefce2837e66b771c60858118d50bb5bb10 <64b12dca2b0abcb5fc0542887d18b926ea5cf711 || >=2793a8b015f7f1caadb9bce9c63dc659f7522676 <9944c7938cd5b3f37b0afec0481c7c015e4f1c58 || >=2793a8b015f7f1caadb9bce9c63dc659f7522676 <57e04e2ff56e32f923154f0f7bc476fcb596ffe7 || >=2793a8b015f7f1caadb9bce9c63dc659f7522676 <b0c8e6d3d866b6a7f73877f71968dbffd27b7785 || >=6.6.15 <6.6.117 | 64b12dca2b0abcb5fc0542887d18b926ea5cf711, 9944c7938cd5b3f37b0afec0481c7c015e4f1c58, 57e04e2ff56e32f923154f0f7bc476fcb596ffe7, b0c8e6d3d866b6a7f73877f71968dbffd27b7785, 6.6.117 |
| Linux/Linuxgeneric | 6.7 | Not reported |
Published upstream
Dec 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: bpf: account for current allocated stack depth in widen_imprecise_scalars() The usage pattern for widen_imprecise_scalars() looks as follows: prev_st = find_prev_entry(env, ...); queued_st = push_stack(...); widen_imprecise_scalars(env, prev_st, queued_st); Where prev_st is an ancestor of the queued_st in the explored states tree. This ancestor is not guaranteed to have same allocated stack depth as queued_st. E.g. in the following case: def main(): for i in 1..2: foo(i) // same callsite, differnt param def foo(i): if i == 1: use 128 bytes of stack iterator based loop Here, for a second 'foo' call prev_st->allocated_stack is 128, while queued_st->allocated_stack is much smaller. widen_imprecise_scalars() needs to take this into account and avoid accessing bpf_verifier_state->frame[*]->stack out of bounds.
Quoted source text, attributed separately from HOL analysis.