What is CVE-2023-52434?

CVE-2023-52434 is a High severity Linux kernel vulnerability with a CVSS score of 8.0 out of 10, classified as a Buffer Overflow flaw (CWE-119), affecting Linux kernel versions from 3.7 onward and patched in 5.4.277, 5.10.211, 5.15.150 and others. CVE-2023-52434 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52434?

CVE-2023-52434 has a CVSS score of 8.0 out of 10, rated High severity. The vector string is CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-52434?

Yes, CVE-2023-52434 has been patched. Fixed versions include 5.4.277, 5.10.211, 5.15.150 and others. If you are running Linux kernel 3.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52434 actively exploited?

CVE-2023-52434 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2023-52434

High

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

Package Linux Kernel

Published 2024-02-20

Last modified 2025-01-17

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.0

out of 10

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-119

CVE-2023-52434 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

Affected versions

Linux kernel versions 3.7 and later are affected. Fixed in 5.4.277, 5.10.211, 5.15.150, 6.1.79, 6.6.8, 6.7 and their respective stable series.

Affected from

≥ 3.7

Fixed in

✓ 5.4.277 5.4.x ✓ 5.10.211 5.10.x ✓ 5.15.150 5.15.x ✓ 6.1.79 6.1.x ✓ 6.6.8 6.6.x ✓ 6.7

References

8 total

Kernel Git
https://git.kernel.org/stable/c/13fb0fc4917621f3dfa285a27eaf7151d770b5e5

Patch
Kernel Git
https://git.kernel.org/stable/c/17a0f64cc02d4972e21c733d9f21d1c512963afa

Patch
Kernel Git
https://git.kernel.org/stable/c/1ae3c59355dc9882e09c020afe8ffbd895ad0f29

Patch
Kernel Git
https://git.kernel.org/stable/c/6726429c18c62dbf5e96ebbd522f262e016553fb

Patch
Kernel Git
https://git.kernel.org/stable/c/890bc4fac3c0973a49cac35f634579bebba7fe48

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2023-52434

Severity High

CVSS score 8.0 / 10

CVSS version 3.1

Published 2024-02-20

Modified 2025-01-17

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52434?

CVE-2023-52434 is a High severity Linux kernel vulnerability with a CVSS score of 8.0 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . It affects Linux kernel versions from 3.7 onward and has been patched in 5.4.277, 5.10.211, 5.15.150 and others. CVE-2023-52434 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52434?

CVE-2023-52434 has a CVSS score of 8.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-52434?

Yes. CVE-2023-52434 has been patched. Fixed versions include 5.4.277, 5.10.211, 5.15.150 and others. If you are running Linux kernel 3.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52434 actively exploited?

No. CVE-2023-52434 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.