GHSA-f5wj-8q5w-fqwr · 深刻度： medium — In the Linux kernel, the following vulnerability has been resolved: jbd2: fix deadlock in...
In the Linux kernel, the following vulnerability has been resolved: jbd2: fix deadlock in jbd2_journal_cancel_revoke() Commit f76d4c28a46a ("fs/jbd2: use sleeping version of __find_get_block()") changed jbd2_journal_cancel_revoke() to use __find_get_block_nonatomic() which holds the folio lock instead of i_private_lock. This breaks the lock ordering (folio -> buffer) and causes an ABBA deadlock when the filesystem blocksize < pagesize: T1 T2 ext4_mkdir() ext4_init_new_dir() ext4_append() ext4_getblk() lock_buffer() <- A sync_blockdev() blkdev_writepages() writeback_iter() writeback_get_folio() folio_lock() <- B ext4_journal_get_create_access() jbd2_journal_cancel_revoke() __find_get_block_nonatomic() folio_lock() <- B block_write_full_folio() lock_buffer() <- A This can occasionally cause generic/013 to hang. Fix by only calling __find_get_block_nonatomic() when the passed buffer_head doesn't belong to the bdev, which is the only case that we need to look up its bdev alias. Otherwise, the lookup is redundant since the found buffer_head is equal to the one we passed in.
総合評価: CVE-2026-46061 は低リスク（22.2/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.09%、1 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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。
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 | 2026-06-16 | 0.17% | 0.09% | -0.07% |
| 2 | 2026-06-15 | 0.02% | 0.17% | +0.15% |
| 3 | 2026-05-28 | — | 0.02% | — |
EPSS の全履歴 （全 3 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 |
|---|---|---|---|---|---|---|
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
GHSA-f5wj-8q5w-fqwr · 深刻度： medium — In the Linux kernel, the following vulnerability has been resolved: jbd2: fix deadlock in...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-46061 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-2026-46061 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2026-46061 |
suse
|
medium | CVE-2026-46061 severity moderate: SUSE including 21 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 199 product×package rows across 40 product lines (SUSE Linux Enterprise High Availability Extension 15 SP7, SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, … (40 product lines)): Known Not Affected 199. | https://www.suse.com/security/cve/CVE-2026-46061/ |
ubuntu
|
medium | CVE-2026-46061 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, released 84, not-affected 79, needed 60, pending 6. | https://ubuntu.com/security/CVE-2026-46061 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.12.31, < 6.12.86 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.14.9, < 6.15 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.15.1, < 6.18.27 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.19, < 7.0.4 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:-:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:* |