Description

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 <0f> 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: <TASK> ? __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_get_tree+0x2c/0x100 ? capable+0x37/0x70 path_mount+0x2d7/0xb80 ? srso_alias_return_thunk+0x5/0xfbef5 ? _raw_spin_unlock_irqrestore+0x44/0x60 __x64_sys_mount+0x11a/0x150 do_syscall_64+0x47/0xf0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f8737657b1e

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  8.0 HIGH

Vector:  CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5	Patch
https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa	Patch
https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29	Patch
https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48	Patch
https://git.kernel.org/stable/c/af1689a9b7701d9907dfc84d2a4b57c4bc907144	Patch

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Initial Analysis by NIST 3/15/2024 10:21:29 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.10.211 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11.0 up to (excluding) 5.15.150 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16.0 up to (including) 6.1.79 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2.0 up to (excluding) 6.6.8
Added	CVSS V3.1		NIST AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-119
Changed	Reference Type	https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5 No Types Assigned	https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa No Types Assigned	https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa Patch
Changed	Reference Type	https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29 No Types Assigned	https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48 No Types Assigned	https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/af1689a9b7701d9907dfc84d2a4b57c4bc907144 No Types Assigned	https://git.kernel.org/stable/c/af1689a9b7701d9907dfc84d2a4b57c4bc907144 Patch

CVE Modified by kernel.org 3/01/2024 9:15:53 AM

Action	Type	Old Value	New Value
Added	Reference		Linux https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5 [No types assigned]
Added	Reference		Linux https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48 [No types assigned]

CVE Modified by kernel.org 2/23/2024 4:15:22 AM

Action	Type	Old Value	New Value
Added	Reference		Linux https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29 [No types assigned]

New CVE Received by NIST 2/20/2024 1:15:50 PM

Action	Type	Old Value	New Value
Added	Description		Record truncated, showing 500 of 2387 characters. View Entire Change Record 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 [
Added	Reference		Linux https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa [No types assigned]
Added	Reference		Linux https://git.kernel.org/stable/c/af1689a9b7701d9907dfc84d2a4b57c4bc907144 [No types assigned]