Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.
総合評価: CVE-2017-1000112 は悪用リスクが高い(72/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 20.80%、97 パーセンタイル) 根拠: 公開エクスプロイトが 3 件参照されています(Exploit-DB)。 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 |
|---|---|---|---|---|
| 47169 | exploit_db | edb | 2018-12-29 | Exploit-DB ↗ |
| 45147 | exploit_db | edb | 2018-08-03 | Exploit-DB ↗ |
| 43418 | exploit_db | edb | 2017-08-13 | 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 | 82.86% | 20.80% | -62.06% |
| 2 | 2026-05-03 | 84.09% | 82.86% | -1.23% |
| 3 | 2026-04-17 | — | 84.09% | — |
EPSS の全履歴 (全 35 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 |
|---|---|---|---|---|---|---|
| 7.0 | 3.1 | HIGH |
|
1.0 | 5.9 | [email protected] |
| 6.9 | 2.0 | MEDIUM |
|
3.4 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2017-1000112 low 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-2017-1000112 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2017-1000112 |
suse
|
high | CVE-2017-1000112 severity important: SUSE including 224 source package names (cluster-md-kmp-default-4.4.74-92.35.1, cluster-md-kmp-default-4.4.82-6.3.1, …), 361 product×package rows across 34 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Desktop 12 SP2, … (34 product lines)): Fixed 355, Known Not Affected 6. | https://www.suse.com/security/cve/CVE-2017-1000112/ |
ubuntu
|
high | CVE-2017-1000112 high priority: Ubuntu including 79 source packages (linux, linux-aws, …), 654 status rows across 11 suites (artful, bionic, cosmic, focal, jammy, noble, oracular, trusty, upstream, xenial, zesty): DNE 425, not-affected 128, released 92, ignored 9. | https://ubuntu.com/security/CVE-2017-1000112 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 2.6.15, < 3.10.108 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 3.11, < 3.16.47 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 3.17, < 3.18.65 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 3.19, < 4.4.82 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.5, < 4.9.43 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.10, < 4.12.7 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://seclists.org/oss-sec/2017/q3/277 | Mailing List Patch Third Party Advisory |
| http://www.debian.org/security/2017/dsa-3981 | Third Party Advisory |
| http://www.securityfocus.com/bid/100262 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1039162 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:2918 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:2930 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:2931 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:3200 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:1931 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:1932 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:4159 | Third Party Advisory |
| https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112 | Third Party Advisory |
| https://www.exploit-db.com/exploits/45147/ | Third Party Advisory VDB Entry |