CVE-2024-50077

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Source
https://cve.org/CVERecord?id=CVE-2024-50077
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50077.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-50077
Downstream
Related
Published
2024-10-29T00:50:19Z
Modified
2026-08-12T03:51:37Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Bluetooth: ISO: Fix multiple init when debugfs is disabled
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50077.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ccf74f2390d60a2f9a75ef496d2564abb478f46a
Fixed
fa4b832c5a6ec35023a1b997cf658c436619c752
Fixed
8fb8e912afb4c47dec12ea9a5853e7a8db95816f
Fixed
adf1b179c2ff8073c24bf87e5a605fcc5a09798b
Fixed
a9b7b535ba192c6b77e6c15a4c82d853163eab8c

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50077.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0.0
Fixed
6.1.114
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.58
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.11.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50077.json"