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NVD / CVE Program· CNA Linux

CVE-2022-50447: Bluetooth: hci_conn: Fix crash on hci_create_cis_sync

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 09a3b0c9c7c6b10587fbb610b718014703cff341, 50757a259ba78c4e938b5735e76ffec6cd0c942e, a190cd9dc62d6ebeb679c1abe9dda4162dfefc84.

Low priority for now. Upgrade to Linux Linux 09a3b0c9c7c6b10587fbb610b718014703cff341, 50757a259ba78c4e938b5735e76ffec6cd0c942e, a190cd9dc62d6ebeb679c1abe9dda4162dfefc84 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: Fix crash on hci_create_cis_sync When attempting to connect multiple ISO sockets without using DEFER_SETUP may result in the following crash: BUG: KASAN: null-ptr-deref in hci_create_cis_sync+0x18b/0x2b0 Read of size 2 at addr 0000000000000036 by task kworker/u3:1/50 CPU: 0 PID: 50 Comm: kworker/u3:1 Not tainted 6.0.0-rc7-02243-gb84a13ff4eda #4373 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-1.fc36 04/01/2014 Workqueue: hci0 hci_cmd_sync_work Call Trace: <TASK> dump_stack_lvl+0x19/0x27 kasan_report+0xbc/0xf0 ? hci_create_cis_sync+0x18b/0x2b0 hci_create_cis_sync+0x18b/0x2b0 ? get_link_mode+0xd0/0xd0 ? __ww_mutex_lock_slowpath+0x10/0x10 ? mutex_lock+0xe0/0xe0 ? get_link_mode+0xd0/0xd0 hci_cmd_sync_work+0x111/0x190 process_one_work+0x427/0x650 worker_thread+0x87/0x750 ? process_one_work+0x650/0x650 kthread+0x14e/0x180 ? kthread_exit+0x50/0x50 ret_from_fork+0x22/0x30 </TASK>

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 1, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.0 and later · before 6.0.16
  • linux linux kernel6.1 and later · before 6.1.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.0affected
    • 26afbd826ee326e63a334c37fd45e82e50a615ec and later · before a190cd9dc62d6ebeb679c1abe9dda4162dfefc84affected · git
    • 26afbd826ee326e63a334c37fd45e82e50a615ec and later · before 09a3b0c9c7c6b10587fbb610b718014703cff341affected · git
    • 26afbd826ee326e63a334c37fd45e82e50a615ec and later · before 50757a259ba78c4e938b5735e76ffec6cd0c942eaffected · git
    • before 6.0not affected · semver
    • 6.0.16 and later · up to and including 6.0.*not affected · semver
    • 6.1.2 and later · up to and including 6.1.*not affected · semver
    • 6.2 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1
Red Hat:rhel_e4s:9.2::appstreambpftool-debuginfobefore 0:7.0.0-284.152.1.el9_20:7.0.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-64k-debug-develbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-64k-debuginfobefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-64k-develbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debug-debuginfobefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debug-develbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debuginfobefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-develbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-devel-matchedbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-docbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-tools-debuginfobefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-zfcpdump-develbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamkernel-zfcpdump-devel-matchedbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2
Red Hat:rhel_e4s:9.2::appstreamperfbefore 0:5.14.0-284.152.1.el9_20:5.14.0-284.152.1.el9_2

+52

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50445Oct 1, 2025 · xfrm: Reinject transport-mode packets through workqueue
    22Monitor
  • ← EarlierCVE-2022-50446Oct 1, 2025 · ARC: mm: fix leakage of memory allocated for PTE
    22Monitor
  • Later →CVE-2022-50448Oct 1, 2025 · mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux09a3b0c9c7c6b10587fbb610b718014703cff341Vendor (CNA)
Linux Linux50757a259ba78c4e938b5735e76ffec6cd0c942eVendor (CNA)
Linux Linuxa190cd9dc62d6ebeb679c1abe9dda4162dfefc84Vendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)
red hat:kernel-rt0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-core0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-core0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-debuginfo0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-devel0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-kvm0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-core0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-extra0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debuginfo0:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)
red hat:kernel-rt-debuginfo-common-x86_640:5.14.0-284.152.1.rt14.437.el9_2 · Red Hat:rhel_e4s:9.2::nfvPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records