CVE-2024-50077
Bluetooth: ISO: Fix multiple init when debugfs is disabled
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: ISO: Fix multiple init when debugfs is disabled
If bt_debugfs is not created successfully, which happens if either
CONFIG_DEBUG_FS or CONFIG_DEBUG_FS_ALLOW_ALL is unset, then iso_init()
returns early and does not set iso_inited to true. This means that a
subsequent call to iso_init() will result in duplicate calls to
proto_register(), bt_sock_register(), etc.
With CONFIG_LIST_HARDENED and CONFIG_BUG_ON_DATA_CORRUPTION enabled, the
duplicate call to proto_register() triggers this BUG():
list_add double add: new=ffffffffc0b280d0, prev=ffffffffbab56250,
next=ffffffffc0b280d0.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:35!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP PTI
CPU: 2 PID: 887 Comm: bluetoothd Not tainted 6.10.11-1-ao-desktop #1
RIP: 0010:__list_add_valid_or_report+0x9a/0xa0
...
__list_add_valid_or_report+0x9a/0xa0
proto_register+0x2b5/0x340
iso_init+0x23/0x150 [bluetooth]
set_iso_socket_func+0x68/0x1b0 [bluetooth]
kmem_cache_free+0x308/0x330
hci_sock_sendmsg+0x990/0x9e0 [bluetooth]
__sock_sendmsg+0x7b/0x80
sock_write_iter+0x9a/0x110
do_iter_readv_writev+0x11d/0x220
vfs_writev+0x180/0x3e0
do_writev+0xca/0x100
...
This change removes the early return. The check for iso_debugfs being
NULL was unnecessary, it is always NULL when iso_inited is false.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-10-21 CVE Reserved
- 2024-10-29 CVE Published
- 2024-10-29 CVE Updated
- 2024-10-29 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
URL | Tag | Source |
---|---|---|
https://git.kernel.org/stable/c/ccf74f2390d60a2f9a75ef496d2564abb478f46a | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.0 < 6.1.114 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.0 < 6.1.114" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.0 < 6.6.58 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.0 < 6.6.58" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.0 < 6.11.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.0 < 6.11.5" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.0 < 6.12-rc4 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.0 < 6.12-rc4" | en |
Affected
|