CVE-2025-68787 | netrom: Fix memory leak in nr_sendmsg()

In the Linux kernel, the following vulnerability has been resolved: netrom: Fix memory leak in nr_sendmsg() syzbot reported a memory leak [1]. When function sock_alloc_send_skb() return NULL in nr_output(), the original skb is not freed, which was allocated in nr_sendmsg(). Fix this by freeing it before return. [1] BUG: memory leak unreferenced object 0xffff888129f35500 (size 240): comm "syz.0.17", pid 6119, jiffies 4294944652 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 10 52 28 81 88 ff ff ..........R(.... backtrace (crc 1456a3e4): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4983 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5340 __alloc_skb+0x203/0x240 net/core/skbuff.c:660 alloc_skb include/linux/skbuff.h:1383 [inline] alloc_skb_with_frags+0x69/0x3f0 net/core/skbuff.c:6671 sock_alloc_send_pskb+0x379/0x3e0 net/core/sock.c:2965 sock_alloc_send_skb include/net/sock.h:1859 [inline] nr_sendmsg+0x287/0x450 net/netrom/af_netrom.c:1105 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] sock_write_iter+0x293/0x2a0 net/socket.c:1195 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x45d/0x710 fs/read_write.c:686 ksys_write+0x143/0x170 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f

公開: 2026-01-13 最終更新: 2026-07-14 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 ソース: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

総合評価: CVE-2025-68787 は低リスク(7/100)。悪用される可能性が高い(EPSS 0.17%、7 パーセンタイル) 推奨対応: 総合リスクは低く緊急対応は不要です。通常の保守サイクルでパッチを適用し、CVSS / EPSS が上昇したら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。

CVE-2025-68787 の EPSS(Exploit Prediction Scoring System)スコア

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 0.04% 0.17% +0.13%
2 2026-06-11 0.06% 0.04% -0.01%
3 2026-02-10 0.06%

EPSS の全履歴 (全 4 件)

CVE-2025-68787 の CVSS(Common Vulnerability Scoring System)指標

この CVE の CVSS 指標。

この CVE のデータセットに CVSS はありません。

CVE-2025-68787 の弱点分類(列挙)

CVE-2025-68787 の GitHub Security Advisory

GHSA-6prc-rrx9-j93r · 深刻度: unknown — In the Linux kernel, the following vulnerability has been resolved: netrom: Fix memory leak in...

CVE-2025-68787 の OS トラッカー

vendor priority summary link
debian not yet assigned CVE-2025-68787 not yet assigned 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-2025-68787
redhat https://access.redhat.com/security/cve/CVE-2025-68787
suse medium https://www.suse.com/security/cve/CVE-2025-68787/
ubuntu medium CVE-2025-68787 medium priority: Ubuntu including 157 source packages (linux, linux-allwinner-5.19, …), 1562 status rows across 10 suites (bionic, focal, jammy, noble, plucky, questing, resolute, trusty, upstream, xenial): DNE 1157, ignored 183, released 150, needed 49, pending 12, not-affected 11. https://ubuntu.com/security/CVE-2025-68787

CVE-2025-68787 の影響を受けるソフトウェア/構成

ベンダー 製品 バージョン 生の CPE
linux linux_kernel >= 2.6.12, < 5.10.248 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 2.6.12, < 5.15.198 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 2.6.12, < 6.1.160 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 2.6.12, < 6.6.120 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 2.6.12, < 6.12.64 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 2.6.12, < 6.18.3 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 2.6.12, < 6.19 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVE-2025-68787 の参考情報

cvelogic Threat Intelligence