NVD Vulnerability Detail

CVE-2024-50110

Summary	In the Linux kernel, the following vulnerability has been resolved: xfrm: fix one more kernel-infoleak in algo dumping During fuzz testing, the following issue was discovered: BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x598/0x2a30 _copy_to_iter+0x598/0x2a30 __skb_datagram_iter+0x168/0x1060 skb_copy_datagram_iter+0x5b/0x220 netlink_recvmsg+0x362/0x1700 sock_recvmsg+0x2dc/0x390 __sys_recvfrom+0x381/0x6d0 __x64_sys_recvfrom+0x130/0x200 x64_sys_call+0x32c8/0x3cc0 do_syscall_64+0xd8/0x1c0 entry_SYSCALL_64_after_hwframe+0x79/0x81 Uninit was stored to memory at: copy_to_user_state_extra+0xcc1/0x1e00 dump_one_state+0x28c/0x5f0 xfrm_state_walk+0x548/0x11e0 xfrm_dump_sa+0x1e0/0x840 netlink_dump+0x943/0x1c40 __netlink_dump_start+0x746/0xdb0 xfrm_user_rcv_msg+0x429/0xc00 netlink_rcv_skb+0x613/0x780 xfrm_netlink_rcv+0x77/0xc0 netlink_unicast+0xe90/0x1280 netlink_sendmsg+0x126d/0x1490 __sock_sendmsg+0x332/0x3d0 ____sys_sendmsg+0x863/0xc30 ___sys_sendmsg+0x285/0x3e0 __x64_sys_sendmsg+0x2d6/0x560 x64_sys_call+0x1316/0x3cc0 do_syscall_64+0xd8/0x1c0 entry_SYSCALL_64_after_hwframe+0x79/0x81 Uninit was created at: __kmalloc+0x571/0xd30 attach_auth+0x106/0x3e0 xfrm_add_sa+0x2aa0/0x4230 xfrm_user_rcv_msg+0x832/0xc00 netlink_rcv_skb+0x613/0x780 xfrm_netlink_rcv+0x77/0xc0 netlink_unicast+0xe90/0x1280 netlink_sendmsg+0x126d/0x1490 __sock_sendmsg+0x332/0x3d0 ____sys_sendmsg+0x863/0xc30 ___sys_sendmsg+0x285/0x3e0 __x64_sys_sendmsg+0x2d6/0x560 x64_sys_call+0x1316/0x3cc0 do_syscall_64+0xd8/0x1c0 entry_SYSCALL_64_after_hwframe+0x79/0x81 Bytes 328-379 of 732 are uninitialized Memory access of size 732 starts at ffff88800e18e000 Data copied to user address 00007ff30f48aff0 CPU: 2 PID: 18167 Comm: syz-executor.0 Not tainted 6.8.11 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Fixes copying of xfrm algorithms where some random data of the structure fields can end up in userspace. Padding in structures may be filled with random (possibly sensitve) data and should never be given directly to user-space. A similar issue was resolved in the commit 8222d5910dae ("xfrm: Zero padding when dumping algos and encap") Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Publication Date	Nov. 6, 2024, 3:15 a.m.
Registration Date	Nov. 6, 2024, 5 a.m.
Last Update	Nov. 9, 2024, 6:05 a.m.

CVSS3.1 : MEDIUM
スコア	5.5
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
攻撃元区分(AV)	ローカル
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	低
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
機密性への影響(C)	高
完全性への影響(I)	なし
可用性への影響(A)	なし

Affected software configurations

Configuration1	or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel:6.12:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.12:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.12:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.12:rc3::::::
cpe:2.3:o:linux:linux_kernel::::::::	6.7			6.11.6
cpe:2.3:o:linux:linux_kernel::::::::	5.16			6.1.115
cpe:2.3:o:linux:linux_kernel::::::::	6.2			6.6.59
cpe:2.3:o:linux:linux_kernel::::::::	5.11			5.15.170

Related information, measures and tools

No	URL	タグ
1	https://git.kernel.org/stable/c/610d4cea9b442b22b4820695fc3335e64849725e	Patch
2	https://git.kernel.org/stable/c/dc2ad8e8818e4bf1a93db78d81745b4877b32972	Patch
3	https://git.kernel.org/stable/c/c73bca72b84b453c8d26a5e7673b20adb294bf54	Patch
4	https://git.kernel.org/stable/c/1e8fbd2441cb2ea28d6825f2985bf7d84af060bb	Patch
5	https://git.kernel.org/stable/c/6889cd2a93e1e3606b3f6e958aa0924e836de4d2	Patch

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-908	初期化されていないリソースの使用	https://cwe.mitre.org/data/definitions/908.html

JVN Vulnerability Information

Linux の Linux Kernel における初期化されていないリソースの使用に関する脆弱性

Title	Linux の Linux Kernel における初期化されていないリソースの使用に関する脆弱性
Summary	Linux の Linux Kernel には、初期化されていないリソースの使用に関する脆弱性が存在します。
Possible impacts	情報を取得される可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	Oct. 11, 2024, midnight
Registration Date	Nov. 11, 2024, 5:40 p.m.
Last Update	Nov. 11, 2024, 5:40 p.m.

Affected System

Linux

Linux Kernel 5.11 以上 5.15.170 未満

Linux Kernel 5.16 以上 6.1.115 未満

Linux Kernel 6.12

Linux Kernel 6.2 以上 6.6.59 未満

Linux Kernel 6.7 以上 6.11.6 未満

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2024-50110	https://www.cve.org/CVERecord?id=CVE-2024-50110
National Vulnerability Database (NVD)
2	CVE-2024-50110	https://nvd.nist.gov/vuln/detail/CVE-2024-50110

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-908	http://cwe.mitre.org/data/definitions/908.html

ベンダー情報

No	Name	URL
Kernel.org git repositories
1	xfrm: fix one more kernel-infoleak in algo dumping (1e8fbd2)	https://git.kernel.org/stable/c/1e8fbd2441cb2ea28d6825f2985bf7d84af060bb
2	xfrm: fix one more kernel-infoleak in algo dumping (610d4ce)	https://git.kernel.org/stable/c/610d4cea9b442b22b4820695fc3335e64849725e
3	xfrm: fix one more kernel-infoleak in algo dumping (6889cd2)	https://git.kernel.org/stable/c/6889cd2a93e1e3606b3f6e958aa0924e836de4d2
4	xfrm: fix one more kernel-infoleak in algo dumping (c73bca7)	https://git.kernel.org/stable/c/c73bca72b84b453c8d26a5e7673b20adb294bf54
5	xfrm: fix one more kernel-infoleak in algo dumping (dc2ad8e)	https://git.kernel.org/stable/c/dc2ad8e8818e4bf1a93db78d81745b4877b32972
Linux Kernel
6	Linux Kernel Archives	https://www.kernel.org

Change Log

No	Changed Details	Date of change
1	[2024年11月11日] 掲載	Nov. 11, 2024, 10:35 a.m.