GHSA-pg25-7cx5-cvcm · 深刻度: critical — Use-after-free (UAF) was possible in the `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and ...
Use-after-free (UAF) was possible in the `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile` when a memory allocation fails with a `MemoryError` and the decompression instance is re-used. This scenario can be triggered if the process is under memory pressure. The fix cleans up the dangling pointer in this specific error condition. The vulnerability is only present if the program re-uses decompressor instances across multiple decompression calls even after a `MemoryError` is raised during decompression. Using the helper functions to one-shot decompress data such as `lzma.decompress()`, `bz2.decompress()`, `gzip.decompress()`, and `zlib.decompress()` are not affected as a new decompressor instance is used per call. If the decompressor instance is not re-used after an error condition, this usage is similarly not vulnerable.
総合評価: CVE-2026-6100 は中リスク(51.6/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 0.58%、43 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-30 | 0.52% | 0.58% | +0.06% |
| 2 | 2026-06-15 | 0.14% | 0.52% | +0.38% |
| 3 | 2026-06-07 | — | 0.14% | — |
EPSS の全履歴 (全 5 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 9.1 | 4.0 | CRITICAL |
|
— | — | [email protected] |
| 8.1 | 3.1 | HIGH |
|
2.2 | 5.9 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
GHSA-pg25-7cx5-cvcm · 深刻度: critical — Use-after-free (UAF) was possible in the `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and ...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
end-of-life | CVE-2026-6100 end-of-life priority: Debian including 6 source packages (pypy3, python2.7, python3.11, python3.13, python3.14, python3.9), 13 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11, open 2. | https://security-tracker.debian.org/tracker/CVE-2026-6100 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2026-6100 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2026-6100/ |
ubuntu
|
medium | CVE-2026-6100 medium priority: Ubuntu including 13 source packages (pypy3, python2.7, …), 65 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): needs-triage 35, DNE 30. | https://ubuntu.com/security/CVE-2026-6100 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| データセットに影響を受ける製品はありません。 | |||