Vulnerability Details : CVE-2023-31083
Potential exploit
An issue was discovered in drivers/bluetooth/hci_ldisc.c in the Linux kernel 6.2. In hci_uart_tty_ioctl, there is a race condition between HCIUARTSETPROTO and HCIUARTGETPROTO. HCI_UART_PROTO_SET is set before hu->proto is set. A NULL pointer dereference may occur.
Vulnerability category: Memory Corruption
Products affected by CVE-2023-31083
- cpe:2.3:o:linux:linux_kernel:6.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-31083
0.01%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-31083
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.0
|
3.6
|
NIST |
CWE ids for CVE-2023-31083
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-31083
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https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g%40mail.gmail.com/
BUG: general protection fault in hci_uart_tty_ioctl - Yu Hao
-
https://bugzilla.suse.com/show_bug.cgi?id=1210780
1210780 – (CVE-2023-31083) VUL-0: CVE-2023-31083: kernel: drivers/bluetooth/hci_ldisc.c race condition in hci_uart_tty_ioctl
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https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c33663af9ad115f90c076a1828129a3fbadea98
Bluetooth: hci_ldisc: check HCI_UART_PROTO_READY flag in HCIUARTGETPROTO - kernel/git/torvalds/linux.git - Linux kernel source tree
-
https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g@mail.gmail.com/
Exploit;Mailing List;Vendor Advisory
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https://security.netapp.com/advisory/ntap-20230929-0003/
April 2023 Linux Kernel 6.2 Vulnerabilities in NetApp Products | NetApp Product Security
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