{"items":[{"id":"NVI-00009203","kind":"vulnerability","title":"block_buffer: panic corrupts inline buffer position","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-qwgh-2vcv-g2f7"],"plain_summary":"GitHub lists this reviewed advisory for block_buffer. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-f19995f2edc9e3da5a3003bb24446252"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-f19995f2edc9e3da5a3003bb24446252","url":"https://github.com/advisories/GHSA-qwgh-2vcv-g2f7","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-qwgh-2vcv-g2f7","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:55:49.621Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f19995f2edc9e3da5a3003bb24446252"],"technology":"block_buffer","known_exclusions":[],"conditions_summary":"### Summary\n\nA caught panic may leave the cursor position of `EagerBuffer` or `ReadBuffer` in a corrupted state; this in turn allows out-of-bounds reads/writes.\n\n### Details & PoC\n\nThe following two tests fail miri:\n\n```rust\n#[cfg(miri)]\n#[test]\nfn eager_digest_blocks_panic_corrupts_inline_position() {\n    // `EagerBuffer` stores its cursor in the last byte of the internal block.\n    // When `digest_blocks` completes a previously partial block, it overwrites\n    // that byte with input data before invoking the caller-provided `compress`\n    // callback. If the callback panics, safe code can catch the panic and keep\n    // using the buffer while its cursor byte no longer satisfies the internal\n    // `pos ::new(&[1, 2]);\n\n    let _ = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {\n        buf.digest_blocks(&[3, 0xff], |_| panic!(\"simulated compression failure\"));\n    }));\n\n    let _ = buf.get_pos();\n}\n\n#[cfg(miri)]\n#[test]\nfn read_buffer_generator_panic_corrupts_inline_position() {\n    // `ReadBuffer` stor","public_affected_ranges":[">= 0.11.0, < 0.12.1"]}],"null_published_at":"2026-10-31T22:13:31.290Z","source_updated_at":"2026-10-30T15:32:34.000Z","source_disclosed_at":"2026-08-19T19:15:34.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:55:49.621Z"}],"next_cursor":null,"snapshot_revision":"42594"}