CVE-2024-35849

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-35849
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix information leak in btrfs_ioctl_logical_to_ino() Syzbot reported the following information leak for in btrfs_ioctl_logical_to_ino(): BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x110 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [inline] _copy_to_user+0xbc/0x110 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [inline] btrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499 btrfs_ioctl+0x714/0x1260 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: __kmalloc_large_node+0x231/0x370 mm/slub.c:3921 __do_kmalloc_node mm/slub.c:3954 [inline] __kmalloc_node+0xb07/0x1060 mm/slub.c:3973 kmalloc_node include/linux/slab.h:648 [inline] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc include/linux/slab.h:766 [inline] init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779 btrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480 btrfs_ioctl+0x714/0x1260 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Bytes 40-65535 of 65536 are uninitialized Memory access of size 65536 starts at ffff888045a40000 This happens, because we're copying a 'struct btrfs_data_container' back to user-space. This btrfs_data_container is allocated in 'init_data_container()' via kvmalloc(), which does not zero-fill the memory. Fix this by using kvzalloc() which zeroes out the memory on allocation.

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf Patch
https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6 Patch
https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc Patch
https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772 Patch
https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86 Patch
https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6 Patch
https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d Patch
https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54 Patch
https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf Patch
https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6 Patch
https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc Patch
https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772 Patch
https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86 Patch
https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6 Patch
https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d Patch
https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54 Patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Mailing List
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Mailing List
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
History

03 Feb 2025, 16:23

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
Debian debian Linux
Debian
CWE CWE-908
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1
References () https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf - () https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf - Patch
References () https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6 - () https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6 - Patch
References () https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc - () https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc - Patch
References () https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772 - () https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772 - Patch
References () https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86 - () https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86 - Patch
References () https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6 - () https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6 - Patch
References () https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d - () https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d - Patch
References () https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54 - () https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54 - Patch
References () https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html - () https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html - Mailing List
References () https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html - () https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html - Mailing List

21 Nov 2024, 09:21

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html -
  • () https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -
References () https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf - () https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf -
References () https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6 - () https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6 -
References () https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc - () https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc -
References () https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772 - () https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772 -
References () https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86 - () https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86 -
References () https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6 - () https://git.kernel.org/stable/c/8bdbcfaf3eac42f98e5486b3d7e130fa287811f6 -
References () https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d - () https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d -
References () https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54 - () https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54 -

05 Nov 2024, 10:16

Type Values Removed Values Added
References
  • {'url': 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}

27 Jun 2024, 12:15

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -

25 Jun 2024, 22:15

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html -
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: btrfs: corrige la fuga de información en btrfs_ioctl_logic_to_ino() Syzbot informó la siguiente fuga de información en btrfs_ioctl_logic_to_ino(): ERROR: KMSAN: kernel-infoleak en instrument_copy_to_user include/linux/instrumented.h: 114 [en línea] ERROR: KMSAN: kernel-infoleak en _copy_to_user+0xbc/0x110 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [en línea] _copy_to_user+0xbc/0x110 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [en línea] btrfs_ioctl_logic_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499 btrfs_ioctl+0x714/0x1260 vfs_ioctl fs/ioctl.c:51 [en línea] __do_sys_ioctl fs/ioctl.c :904 [en línea] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h: 17 do_syscall_x64 arco/ x86/entry/common.c:52 [en línea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se creó en: __kmalloc_large_node+0x231/0x370 mm/slub.c:3921 __do_kmalloc_node mm/slub.c:3954 [en línea] __kmalloc_node+0xb07/0x1060 mm/slub.c:3973 kmalloc_node include/linux/slab.h:648 [en línea] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc incluye /linux/slab.h:766 [en línea] init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779 btrfs_ioctl_logic_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480 btrfs_ioctl+0x714/0x1260 ctl fs/ioctl.c :51 [en línea] __do_sys_ioctl fs/ioctl.c:904 [en línea] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x Arco 3b50/x86/incluye /generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:52 [en línea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x77/0x7f Bytes 40-65535 de 65536 no están inicializados El acceso a la memoria de tamaño 65536 comienza en ffff888045a40000. Esto sucede porque estamos copiando una 'estructura btrfs_data_container' nuevamente al espacio de usuario. Este btrfs_data_container se asigna en 'init_data_container()' a través de kvmalloc(), que no llena la memoria con ceros. Solucione este problema usando kvzalloc() que pone a cero la memoria al asignarla.

17 May 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-17 15:15

Updated : 2025-02-03 16:23

NVD link : CVE-2024-35849

Mitre link : CVE-2024-35849

CVE.ORG link : CVE-2024-35849

JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource