cbcvebase.
CVE-2023-52434
published 2024-02-20

CVE-2023-52434: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential OOBs in smb2_parse_contexts() Validate offsets and lengths…

PriorityP341high8CVSS 3.1
AVAACLPRLUINSUCHIHAH
EPSS
0.56%
42.9th percentile
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential OOBs in smb2_parse_contexts() Validate offsets and lengths before dereferencing create contexts in smb2_parse_contexts(). This fixes following oops when accessing invalid create contexts from server: BUG: unable to handle page fault for address: ffff8881178d8cc3 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 4a01067 P4D 4a01067 PUD 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 1736 Comm: mount.cifs Not tainted 6.7.0-rc4 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014 RIP: 0010:smb2_parse_contexts+0xa0/0x3a0 [cifs] Code: f8 10 75 13 48 b8 93 ad 25 50 9c b4 11 e7 49 39 06 0f 84 d2 00 00 00 8b 45 00 85 c0 74 61 41 29 c5 48 01 c5 41 83 fd 0f 76 55 b7 7d 04 0f b7 45 06 4c 8d 74 3d 00 66 83 f8 04 75 bc ba 04 00 RSP: 0018:ffffc900007939e0 EFLAGS: 00010216 RAX: ffffc90000793c78 RBX: ffff8880180cc000 RCX: ffffc90000793c90 RDX: ffffc90000793cc0 RSI: ffff8880178d8cc0 RDI: ffff8880180cc000 RBP: ffff8881178d8cbf R08: ffffc90000793c22 R09: 0000000000000000 R10: ffff8880180cc000 R11: 0000000000000024 R12: 0000000000000000 R13: 0000000000000020 R14: 0000000000000000 R15: ffffc90000793c22 FS: 00007f873753cbc0(0000) GS:ffff88806bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8881178d8cc3 CR3: 00000000181ca000 CR4: 0000000000750ef0 PKRU: 55555554 Call Trace: ? __die+0x23/0x70 ? page_fault_oops+0x181/0x480 ? search_module_extables+0x19/0x60 ? srso_alias_return_thunk+0x5/0xfbef5 ? exc_page_fault+0x1b6/0x1c0 ? asm_exc_page_fault+0x26/0x30 ? smb2_parse_contexts+0xa0/0x3a0 [cifs] SMB2_open+0x38d/0x5f0 [cifs] ? smb2_is_path_accessible+0x138/0x260 [cifs] smb2_is_path_accessible+0x138/0x260 [cifs] cifs_is_path_remote+0x8d/0x230 [cifs] cifs_mount+0x7e/0x350 [cifs] cifs_smb3_do_mount+0x128/0x780 [cifs] smb3_get_tree+0xd9/0x290 [cifs] vfs_ge

Affected

25 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux>= b8c32dbb0deb287a5fcb78251e4eae6c7275760d < 6726429c18c62dbf5e96ebbd522f262e016553fb6726429c18c62dbf5e96ebbd522f262e016553fb
linuxlinux>= b8c32dbb0deb287a5fcb78251e4eae6c7275760d < 13fb0fc4917621f3dfa285a27eaf7151d770b5e513fb0fc4917621f3dfa285a27eaf7151d770b5e5
linuxlinux>= b8c32dbb0deb287a5fcb78251e4eae6c7275760d < 890bc4fac3c0973a49cac35f634579bebba7fe48890bc4fac3c0973a49cac35f634579bebba7fe48
linuxlinux>= b8c32dbb0deb287a5fcb78251e4eae6c7275760d < 1ae3c59355dc9882e09c020afe8ffbd895ad0f291ae3c59355dc9882e09c020afe8ffbd895ad0f29
linuxlinux>= b8c32dbb0deb287a5fcb78251e4eae6c7275760d < 17a0f64cc02d4972e21c733d9f21d1c512963afa17a0f64cc02d4972e21c733d9f21d1c512963afa
linuxlinux>= b8c32dbb0deb287a5fcb78251e4eae6c7275760d < af1689a9b7701d9907dfc84d2a4b57c4bc907144af1689a9b7701d9907dfc84d2a4b57c4bc907144
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.6.8-16.6.8-1
linuxlinux_kernel>= 0 < 6.6.8-16.6.8-1
linuxlinux_kernel>= 0 < 5.4.0-192.2125.4.0-192.212
linuxlinux_kernel>= 0 < 5.15.0-112.1225.15.0-112.122
linuxlinux_kernel>= 5.11 < 5.15.1505.15.150
linuxlinux_kernel5.16 – 6.1.79
linuxlinux_kernel>= 5.3 < 5.4.2775.4.277
linuxlinux_kernel>= 5.5 < 5.10.2115.10.211
linuxlinux_kernel>= 6.2 < 6.6.86.6.8
msrccbl2_kernel_5.15.148.2-2_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.153.1-1_on_cbl_mariner_2.0
msrccbl_mariner_2.0_arm
msrccbl_mariner_2.0_x64

CVSS provenance

nvdv3.18.0HIGHCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian8.0HIGH
vendor_msrc8.0HIGH
vendor_redhat8.0HIGH
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