CVE-2023-52833 : In the Linux kernel, the following vulnerability has been resolved: Bluetooth:

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: Add date->evt_skb is NULL check fix crash because of null pointers [ 6104.969662] BUG: kernel NULL pointer dereference, address: 00000000000000c8 [ 6104.969667] #PF: supervisor read access in kernel mode [ 6104.969668] #PF: error_code(0x0000) - not-present page [ 6104.969670] PGD 0 P4D 0 [ 6104.969673] Oops: 0000 [#1] SMP NOPTI [ 6104.969684] RIP: 0010:btusb_mtk_hci_wmt_sync+0x144/0x220 [btusb] [ 6104.969688] RSP: 0018:ffffb8d681533d48 EFLAGS: 00010246 [ 6104.969689] RAX: 0000000000000000 RBX: ffff8ad560bb2000 RCX: 0000000000000006 [ 6104.969691] RDX: 0000000000000000 RSI: ffffb8d681533d08 RDI: 0000000000000000 [ 6104.969692] RBP: ffffb8d681533d70 R08: 0000000000000001 R09: 0000000000000001 [ 6104.969694] R10: 0000000000000001 R11: 00000000fa83b2da R12: ffff8ad461d1d7c0 [ 6104.969695] R13: 0000000000000000 R14: ffff8ad459618c18 R15: ffffb8d681533d90 [ 6104.969697] FS: 00007f5a1cab9d40(0000) GS:ffff8ad578200000(0000) knlGS:00000 [ 6104.969699] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6104.969700] CR2: 00000000000000c8 CR3: 000000018620c001 CR4: 0000000000760ef0 [ 6104.969701] PKRU: 55555554 [ 6104.969702] Call Trace: [ 6104.969708] btusb_mtk_shutdown+0x44/0x80 [btusb] [ 6104.969732] hci_dev_do_close+0x470/0x5c0 [bluetooth] [ 6104.969748] hci_rfkill_set_block+0x56/0xa0 [bluetooth] [ 6104.969753] rfkill_set_block+0x92/0x160 [ 6104.969755] rfkill_fop_write+0x136/0x1e0 [ 6104.969759] __vfs_write+0x18/0x40 [ 6104.969761] vfs_write+0xdf/0x1c0 [ 6104.969763] ksys_write+0xb1/0xe0 [ 6104.969765] __x64_sys_write+0x1a/0x20 [ 6104.969769] do_syscall_64+0x51/0x180 [ 6104.969771] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 6104.969773] RIP: 0033:0x7f5a21f18fef [ 6104.9] RSP: 002b:00007ffeefe39010 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 6104.969780] RAX: ffffffffffffffda RBX: 000055c10a7560a0 RCX: 00007f5a21f18fef [ 6104.969781] RDX: 0000000000000008 RSI: 00007ffeefe39060 RDI: 0000000000000012 [ 6104.969782] RBP: 00007ffeefe39060 R08: 0000000000000000 R09: 0000000000000017 [ 6104.969784] R10: 00007ffeefe38d97 R11: 0000000000000293 R12: 0000000000000002 [ 6104.969785] R13: 00007ffeefe39220 R14: 00007ffeefe391a0 R15: 000055c10a72acf0

Published 2024-05-21 15:31:35

Updated 2024-12-31 20:09:52

Source Linux

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2023-52833

Linux » Linux Kernel
Versions from including (>=) 5.11 and before (<) 5.15.140
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions from including (>=) 6.2 and before (<) 6.5.13
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions from including (>=) 5.16 and before (<) 6.1.64
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions from including (>=) 6.6 and before (<) 6.6.3
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions before (<) 5.10.202
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2023-52833

EPSS FAQ

0.05%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 15 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-52833

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	1.8	3.6	NIST	2024-12-31
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2023-52833

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-52833

https://git.kernel.org/stable/c/9f8e4d1a4ca1179aaeb43f91f3e2a386e7e616b3

Bluetooth: btusb: Add date->evt_skb is NULL check - kernel/git/stable/linux.git - Linux kernel stable tree
Patch
https://git.kernel.org/stable/c/0048ddf045bddc4dacb3e783fd869a2f8fb5be30

Bluetooth: btusb: Add date->evt_skb is NULL check - kernel/git/stable/linux.git - Linux kernel stable tree
Patch
https://git.kernel.org/stable/c/a556f2ef556a04790f67f2fa272f1a77336d15a0

Bluetooth: btusb: Add date->evt_skb is NULL check - kernel/git/stable/linux.git - Linux kernel stable tree
Patch
https://git.kernel.org/stable/c/624820f7c8826dd010e8b1963303c145f99816e9

Bluetooth: btusb: Add date->evt_skb is NULL check - kernel/git/stable/linux.git - Linux kernel stable tree
Patch
https://git.kernel.org/stable/c/13b1ebad4c175e6a9b0748acbf133c21a15d282a

Bluetooth: btusb: Add date->evt_skb is NULL check - kernel/git/stable/linux.git - Linux kernel stable tree
Patch
https://git.kernel.org/stable/c/f9de14bde56dcbb0765284c6dfc35842b021733c

Bluetooth: btusb: Add date->evt_skb is NULL check - kernel/git/stable/linux.git - Linux kernel stable tree
Patch

Jump to

Vulnerability Details : CVE-2023-52833

Products affected by CVE-2023-52833

Exploit prediction scoring system (EPSS) score for CVE-2023-52833

CVSS scores for CVE-2023-52833

CWE ids for CVE-2023-52833

References for CVE-2023-52833