In the Linux kernel, the following vulnerability has been resolved: s390: avoid using global register for current_stack_pointer Commit 30de14b1884b ("s390: current_stack_pointer shouldn't be a function") made current_stack_pointer a global register variable like on many other architectures. Unfortunately on s390 it uncovers old gcc bug which is fixed only since gcc-9.1 [gcc commit 3ad7fed1cc87 ("S/390: Fix PR89775. Stackpointer save/restore instructions removed")] and backported to gcc-8.4 and later. Due to this bug gcc versions prior to 8.4 generate broken code which leads to stack corruptions. Current minimal gcc version required to build the kernel is declared as 5.1. It is not possible to fix all old gcc versions, so work around this problem by avoiding using global register variable for current_stack_pointer.
総合評価: CVE-2022-49804 は低リスク（33.3/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.16%、6 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 | 2026-06-15 | 0.03% | 0.16% | +0.13% |
| 2 | 2026-06-10 | 0.16% | 0.03% | -0.14% |
| 3 | 2026-06-09 | — | 0.16% | — |
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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2022-49804 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-2022-49804 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-49804 |
suse
|
medium | CVE-2022-49804 severity moderate: SUSE including 69 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 310 product×package rows across 52 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Liberty Linux 9, … (52 product lines)): Known Not Affected 267, Fixed 43. | https://www.suse.com/security/cve/CVE-2022-49804/ |
ubuntu
|
medium | CVE-2022-49804 medium priority: Ubuntu including 144 source packages (linux, linux-allwinner-5.19, …), 1285 status rows across 9 suites (bionic, focal, jammy, noble, oracular, plucky, trusty, upstream, xenial): DNE 921, ignored 146, not-affected 140, released 78. | https://ubuntu.com/security/CVE-2022-49804 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 5.18.1, < 6.0.10 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 5.18 | cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:* |
| linux | linux_kernel | 5.18 | cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:* |
| linux | linux_kernel | 5.18 | cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:* |
| linux | linux_kernel | 5.18 | cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:* |
| linux | linux_kernel | 5.18 | cpe:2.3:o:linux:linux_kernel:5.18:rc6:*:*:*:*:*:* |
| linux | linux_kernel | 5.18 | cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:* |
| linux | linux_kernel | 6.1 | cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 6.1 | cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* |
| linux | linux_kernel | 6.1 | cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* |
| linux | linux_kernel | 6.1 | cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* |
| linux | linux_kernel | 6.1 | cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* |