GHSA-rp7m-xq2f-r4cg · 深刻度: critical — In the Linux kernel, the following vulnerability has been resolved: smb: client: validate...
In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building DACL pointers parse_sec_desc(), build_sec_desc(), and the chown path in id_mode_to_cifs_acl() all add the server-supplied dacloffset to pntsd before proving a DACL header fits inside the returned security descriptor. On 32-bit builds a malicious server can return dacloffset near U32_MAX, wrap the derived DACL pointer below end_of_acl, and then slip past the later pointer-based bounds checks. build_sec_desc() and id_mode_to_cifs_acl() can then dereference DACL fields from the wrapped pointer in the chmod/chown rewrite paths. Validate dacloffset numerically before building any DACL pointer and reuse the same helper at the three DACL entry points.
総合評価: CVE-2026-46195 は中リスク(56/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 0.68%、48 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 | 0.50% | 0.68% | +0.18% |
| 2 | 2026-06-15 | 0.06% | 0.50% | +0.44% |
| 3 | 2026-06-03 | — | 0.06% | — |
EPSS の全履歴 (全 4 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
| 7.5 | 3.1 | HIGH |
|
1.6 | 5.9 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
GHSA-rp7m-xq2f-r4cg · 深刻度: critical — In the Linux kernel, the following vulnerability has been resolved: smb: client: validate...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-46195 unimportant priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. | https://security-tracker.debian.org/tracker/CVE-2026-46195 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2026-46195 |
suse
|
— | — | https://www.suse.com/security/cve/CVE-2026-46195/ |
ubuntu
|
medium | CVE-2026-46195 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1422 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1024, ignored 169, needed 100, released 84, not-affected 45. | https://ubuntu.com/security/CVE-2026-46195 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 5.12, < 6.6.140 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.7, < 6.12.88 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.13, < 6.18.30 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.19, < 7.0.7 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 7.1 | cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 7.1 | cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* |