In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in fs/btrfs/free-space-cache.c because the pointer to a left data structure can be the same as the pointer to a right data structure.
総合評価: CVE-2019-19448 は悪用リスクが高い(75.8/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 2.23%、80 パーセンタイル) 根拠: 公開エクスプロイトが 1 件参照されています(Exploit-DB)。 直近 1 日で EPSS が +1.45% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-06-15 | 0.78% | 2.23% | +1.45% |
| 2 | 2025-12-28 | 0.73% | 0.78% | +0.04% |
| 3 | 2025-12-27 | — | 0.73% | — |
EPSS の全履歴 (全 16 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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2019-19448 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-19448 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2019-19448 |
suse
|
high | CVE-2019-19448 severity important: SUSE including 12 source package names (kernel-default, kernel-default-base, …), 196 product×package rows across 51 product lines (SUSE CaaS Platform 4.0, SUSE CaaS Platform 4.5, … (51 product lines)): Known Not Affected 196. | https://www.suse.com/security/cve/CVE-2019-19448/ |
ubuntu
|
low | CVE-2019-19448 low priority: Ubuntu including 169 source packages (linux, linux-allwinner, …), 2236 status rows across 18 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1732, not-affected 248, released 199, ignored 57. | https://ubuntu.com/security/CVE-2019-19448 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 2.6.31, < 4.4.233 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.5.0, < 4.9.233 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.10, < 4.14.194 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.15, < 4.19.141 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.20, < 5.4.60 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.5.0, < 5.7.17 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.8, < 5.8.3 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* |
| netapp | cloud_backup | — | cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* |
| netapp | data_availability_services | — | cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:* |
| netapp | hci_management_node | — | cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* |
| netapp | solidfire | — | cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* |
| netapp | steelstore_cloud_integrated_storage | — | cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* |
| netapp | a700s_firmware | — | cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:* |
| netapp | fas_8300_firmware | — | cpe:2.3:o:netapp:fas_8300_firmware:-:*:*:*:*:*:*:* |
| netapp | fas_8700_firmware | — | cpe:2.3:o:netapp:fas_8700_firmware:-:*:*:*:*:*:*:* |
| netapp | fas_a400_firmware | — | cpe:2.3:o:netapp:fas_a400_firmware:-:*:*:*:*:*:*:* |
| netapp | aff_8300_firmware | — | cpe:2.3:o:netapp:aff_8300_firmware:-:*:*:*:*:*:*:* |
| netapp | aff_8700_firmware | — | cpe:2.3:o:netapp:aff_8700_firmware:-:*:*:*:*:*:*:* |
| netapp | aff_a400_firmware | — | cpe:2.3:o:netapp:aff_a400_firmware:-:*:*:*:*:*:*:* |
| netapp | h610s_firmware | — | cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:* |
| netapp | solidfire_baseboard_management_controller_firmware | — | cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19448 | Exploit Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200103-0001/ | Third Party Advisory |
| https://usn.ubuntu.com/4578-1/ | Third Party Advisory |