GHSA-mm4j-fwqr-3cf4 · 深刻度： critical — In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc:...
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown mtk_free_dev() calls metadata_dst_free() which frees the metadata_dst with kfree() immediately, bypassing the RCU grace period. In the RX path, skb_dst_set_noref() sets a non-refcounted pointer from the skb to the metadata_dst. This function requires RCU read-side protection and the dst must remain valid until all RCU readers complete. Since metadata_dst_free() calls kfree() directly, a use-after-free can occur if any skb still holds a noref pointer to the dst when the driver tears it down. Replace metadata_dst_free() with dst_release() which properly goes through the refcount path: when the refcount drops to zero, it schedules the actual free via call_rcu_hurry(), ensuring all RCU readers have completed before the memory is freed.
総合評価: CVE-2026-53247 は中リスク（53.3/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 0.51%、39 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 | 2026-06-28 | 0.18% | 0.51% | +0.32% |
| 2 | 2026-06-25 | — | 0.18% | — |
EPSS の全履歴 （全 2 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 |
GHSA-mm4j-fwqr-3cf4 · 深刻度： critical — In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc:...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-53247 unimportant 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-2026-53247 |
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2026-53247 |
suse
|
medium | CVE-2026-53247 severity moderate: SUSE including 19 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 125 product×package rows across 24 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (24 product lines)): Known Not Affected 125. | https://www.suse.com/security/cve/CVE-2026-53247/ |
ubuntu
|
low | CVE-2026-53247 low priority: Ubuntu including 161 source packages (linux, linux-allwinner-5.19, …), 1449 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1044, ignored 172, released 87, not-affected 79, needed 66, needs-triage 1. | https://ubuntu.com/security/CVE-2026-53247 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.2, < 6.6.143 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.2, < 6.12.94 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.2, < 6.18.36 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.2, < 7.0.13 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.2, < 7.1 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |