CVE-2022-50272: media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()
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 0ed554fd769a19ea8464bb83e9ac201002ef74ad, 210fcf64be4db82c0e190e74b5111e4eef661a7a, 2b6a8a1a32746981044e7ab06649c804acb4068a.
Low priority for now. Upgrade to Linux Linux 0ed554fd769a19ea8464bb83e9ac201002ef74ad, 210fcf64be4db82c0e190e74b5111e4eef661a7a, 2b6a8a1a32746981044e7ab06649c804acb4068a 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: media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer() Wei Chen reports a kernel bug as blew: general protection fault, probably for non-canonical address KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] ... Call Trace: <TASK> __i2c_transfer+0x77e/0x1930 drivers/i2c/i2c-core-base.c:2109 i2c_transfer+0x1d5/0x3d0 drivers/i2c/i2c-core-base.c:2170 i2cdev_ioctl_rdwr+0x393/0x660 drivers/i2c/i2c-dev.c:297 i2cdev_ioctl+0x75d/0x9f0 drivers/i2c/i2c-dev.c:458 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd834a8bded In az6027_i2c_xfer(), if msg[i].addr is 0x99, a null-ptr-deref will caused when accessing msg[i].buf. For msg[i].len is 0 and msg[i].buf is null. Fix this by checking msg[i].len in az6027_i2c_xfer().
- Published
- Sep 15, 2025
- Updated
- Nov 5, 2026
- EPSS
- 0.1% · 5th percentile
- CWE
- CWE-476
Report tools
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%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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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.
We use this product, ask for helpAffected 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.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel2.6.34 and later · before 4.9.337
- linux linux kernel4.10 and later · before 4.14.303
- linux linux kernel4.15 and later · before 4.19.270
- linux linux kernel4.20 and later · before 5.4.229
- linux linux kernel5.5 and later · before 5.10.163
- linux linux kernel5.11 and later · before 5.15.86
- linux linux kernel5.16 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
- 2.6.34affected
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 2b6a8a1a32746981044e7ab06649c804acb4068aaffected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before c712d1ccbfb787620422b437a5b8fac0802547bdaffected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 7abfe467cd685f5da7ecb415441e45e3e4e2baa8affected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 8b256d23361c51aa4b7fdb71176c1ca50966fb39affected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 559891d430e3f3a178040c4371ed419edbfa7d65affected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 210fcf64be4db82c0e190e74b5111e4eef661a7aaffected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 6fbc44731a4665cbe92a5090e9804a388a72214baffected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 6b60cf73a931af34b7a0a3f467a79d9fe0df2d70affected · git
- 76f9a820c8672ada12ffa0903652c9e6f2429462 and later · before 0ed554fd769a19ea8464bb83e9ac201002ef74adaffected · git
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.4-1 | 6.1.4-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-64kb | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-default-base | before 5.3.18-150300.59.221.1.150300.18.132.1 | 5.3.18-150300.59.221.1.150300.18.132.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-docs | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-obs-build | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-preempt | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-source | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-syms | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kernel-default | before 4.12.14-122.275.1 | 4.12.14-122.275.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_73 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-default | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_62 | before 1-150300.7.3.1 | 1-150300.7.3.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-rt | before 5.3.18-150300.223.1 | 5.3.18-150300.223.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-source-rt | before 5.3.18-150300.223.1 | 5.3.18-150300.223.1 |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-default | before 3.0.101-108.192.1 | 3.0.101-108.192.1 |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-docs | before 3.0.101-108.192.1 | 3.0.101-108.192.1 |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-ec2 | before 3.0.101-108.192.1 | 3.0.101-108.192.1 |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-source | before 3.0.101-108.192.1 | 3.0.101-108.192.1 |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-syms | before 3.0.101-108.192.1 | 3.0.101-108.192.1 |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-trace | before 3.0.101-108.192.1 | 3.0.101-108.192.1 |
| SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-xen | before 3.0.101-108.192.1 | 3.0.101-108.192.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-source | before 4.12.14-122.275.1 | 4.12.14-122.275.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-syms | before 4.12.14-122.275.1 | 4.12.14-122.275.1 |
| SUSE:Linux Enterprise Server 15 SP3-LTSS | kernel-zfcpdump | before 5.3.18-150300.59.221.1 | 5.3.18-150300.59.221.1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- 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 KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2022-50267Sep 15, 2025 · mmc: rtsx_pci: fix return value check of mmc_add_host()22Monitor
- ← EarlierCVE-2022-50269Sep 15, 2025 · drm/vkms: Fix memory leak in vkms_init()22Monitor
- Later →CVE-2022-50275Sep 15, 2025 · drm/radeon: Add the missed acpi_put_table() to fix memory leak22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 0ed554fd769a19ea8464bb83e9ac201002ef74ad | Vendor (CNA) |
| Linux Linux | 210fcf64be4db82c0e190e74b5111e4eef661a7a | Vendor (CNA) |
| Linux Linux | 2b6a8a1a32746981044e7ab06649c804acb4068a | Vendor (CNA) |
| Linux Linux | 559891d430e3f3a178040c4371ed419edbfa7d65 | Vendor (CNA) |
| Linux Linux | 6b60cf73a931af34b7a0a3f467a79d9fe0df2d70 | Vendor (CNA) |
| Linux Linux | 6fbc44731a4665cbe92a5090e9804a388a72214b | Vendor (CNA) |
| Linux Linux | 7abfe467cd685f5da7ecb415441e45e3e4e2baa8 | Vendor (CNA) |
| Linux Linux | 8b256d23361c51aa4b7fdb71176c1ca50966fb39 | Vendor (CNA) |
| Linux Linux | c712d1ccbfb787620422b437a5b8fac0802547bd | Vendor (CNA) |
| debian:linux | 6.1.4-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-64kb | 5.3.18-150300.59.221.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-default | 4.12.14-122.275.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package registry (OSV) |
| suse:kernel-default-base | 5.3.18-150300.59.221.1.150300.18.132.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-docs | 5.3.18-150300.59.221.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP3_Update_62 | 1-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3 | Package registry (OSV) |
| suse:kernel-obs-build | 5.3.18-150300.59.221.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-preempt | 5.3.18-150300.59.221.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-rt | 5.3.18-150300.223.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:kernel-source | 4.12.14-122.275.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:kernel-source-rt | 5.3.18-150300.223.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:kernel-syms | 4.12.14-122.275.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP5_Update_73 | 1-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | Package 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.
No history yet (it accumulates with the daily EPSS job).
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 researchersFinders, 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 DereferenceCVSS 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
- SSVC exploitation— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (8 more)Show less
- git.kernel.org/stable/c/210fcf64be4db82c0e190e74b5111e4eef661a7a
- git.kernel.org/stable/c/2b6a8a1a32746981044e7ab06649c804acb4068a
- git.kernel.org/stable/c/559891d430e3f3a178040c4371ed419edbfa7d65
- git.kernel.org/stable/c/6b60cf73a931af34b7a0a3f467a79d9fe0df2d70
- git.kernel.org/stable/c/6fbc44731a4665cbe92a5090e9804a388a72214b
- git.kernel.org/stable/c/7abfe467cd685f5da7ecb415441e45e3e4e2baa8
- git.kernel.org/stable/c/8b256d23361c51aa4b7fdb71176c1ca50966fb39
- git.kernel.org/stable/c/c712d1ccbfb787620422b437a5b8fac0802547bd
Vendor advisories and official records. Exploit/PoC links are deliberately left out.