CVE-2022-49942: wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected
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: 0.26% (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 15bc8966b6d3a5b9bfe4c9facfa02f2b69b1e5f0, 1691a48aef0a82d1754b9853dae7e3f5cacdf70b, 552ba102a6898630a7d16887f29e606d6fabe508.
Low priority for now. Upgrade to Linux Linux 15bc8966b6d3a5b9bfe4c9facfa02f2b69b1e5f0, 1691a48aef0a82d1754b9853dae7e3f5cacdf70b, 552ba102a6898630a7d16887f29e606d6fabe508 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: wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected When we are not connected to a channel, sending channel "switch" announcement doesn't make any sense. The BSS list is empty in that case. This causes the for loop in cfg80211_get_bss() to be bypassed, so the function returns NULL (check line 1424 of net/wireless/scan.c), causing the WARN_ON() in ieee80211_ibss_csa_beacon() to get triggered (check line 500 of net/mac80211/ibss.c), which was consequently reported on the syzkaller dashboard. Thus, check if we have an existing connection before generating the CSA beacon in ieee80211_ibss_finish_csa().
- Published
- Jun 18, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 18th 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 · 0.2%
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 kernel3.13 and later · before 4.9.328
- linux linux kernel4.10 and later · before 4.14.293
- linux linux kernel4.15 and later · before 4.19.258
- linux linux kernel4.20 and later · before 5.4.213
- linux linux kernel5.5 and later · before 5.10.142
- linux linux kernel5.11 and later · before 5.15.66
- linux linux kernel5.16 and later · before 5.19.8
- linux linux kernel6.0
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
- 3.13affected
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before cdb9a8da9b84800eb15506cd9363cf0cf059e677affected · git
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before 1691a48aef0a82d1754b9853dae7e3f5cacdf70baffected · git
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before d9eb37db6a28b59a95a3461450ee209654c5f95baffected · git
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before 66689c5c02acd4d76c28498fe220998610aec61eaffected · git
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before dd649b49219a0388cc10fc40e4c2ea681566a780affected · git
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before 552ba102a6898630a7d16887f29e606d6fabe508affected · git
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before 864e280cb3a9a0f5212b16ef5057c4e692f7039daffected · git
- cd7760e62c2ac8581f050b2d36501d1a60beaf83 and later · before 15bc8966b6d3a5b9bfe4c9facfa02f2b69b1e5f0affected · git
- before 3.13not affected · semver
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 6.0.2-1 | 6.0.2-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-64kb | before 5.14.21-150400.24.170.2 | 5.14.21-150400.24.170.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-docs | before 5.14.21-150400.24.170.1 | 5.14.21-150400.24.170.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-obs-build | before 5.14.21-150400.24.170.2 | 5.14.21-150400.24.170.2 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-source | before 5.14.21-150400.24.170.1 | 5.14.21-150400.24.170.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-syms | before 5.14.21-150400.24.170.1 | 5.14.21-150400.24.170.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-64kb | before 5.14.21-150500.55.113.1 | 5.14.21-150500.55.113.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-docs | before 5.14.21-150500.55.113.1 | 5.14.21-150500.55.113.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-obs-build | before 5.14.21-150500.55.113.1 | 5.14.21-150500.55.113.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-syms | before 5.14.21-150500.55.113.1 | 5.14.21-150500.55.113.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-default | before 5.3.18-150300.59.211.1 | 5.3.18-150300.59.211.1 |
| SUSE:Linux Enterprise Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_59 | before 1-150300.7.3.1 | 1-150300.7.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_28 | before 1-150500.11.3.1 | 1-150500.11.3.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-rt | before 5.3.18-150300.214.1 | 5.3.18-150300.214.1 |
| SUSE:Linux Enterprise Micro 5.1 | kernel-source-rt | before 5.3.18-150300.214.1 | 5.3.18-150300.214.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default | before 5.14.21-150400.24.170.2 | 5.14.21-150400.24.170.2 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default-base | before 5.14.21-150400.24.170.2.150400.24.86.2 | 5.14.21-150400.24.170.2.150400.24.86.2 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-rt | before 5.14.21-150400.15.124.1 | 5.14.21-150400.15.124.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-source-rt | before 5.14.21-150400.15.124.1 | 5.14.21-150400.15.124.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default | before 5.14.21-150500.55.113.1 | 5.14.21-150500.55.113.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default-base | before 5.14.21-150500.55.113.1.150500.6.53.1 | 5.14.21-150500.55.113.1.150500.6.53.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-rt | before 5.14.21-150500.13.100.2 | 5.14.21-150500.13.100.2 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-source | before 5.14.21-150500.55.113.1 | 5.14.21-150500.55.113.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-source-rt | before 5.14.21-150500.13.100.1 | 5.14.21-150500.13.100.1 |
+10
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-2022-49939Jun 18, 2025 · binder: fix UAF of ref->proc caused by race condition28Monitor
- ← EarlierCVE-2022-49940Jun 18, 2025 · tty: n_gsm: add sanity check for gsm->receive in gsm_receive_buf()22Monitor
- Later →CVE-2022-49943Jun 18, 2025 · USB: gadget: Fix obscure lockdep violation for udc_mutex22Monitor
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 | 15bc8966b6d3a5b9bfe4c9facfa02f2b69b1e5f0 | Vendor (CNA) |
| Linux Linux | 1691a48aef0a82d1754b9853dae7e3f5cacdf70b | Vendor (CNA) |
| Linux Linux | 552ba102a6898630a7d16887f29e606d6fabe508 | Vendor (CNA) |
| Linux Linux | 66689c5c02acd4d76c28498fe220998610aec61e | Vendor (CNA) |
| Linux Linux | 864e280cb3a9a0f5212b16ef5057c4e692f7039d | Vendor (CNA) |
| Linux Linux | cdb9a8da9b84800eb15506cd9363cf0cf059e677 | Vendor (CNA) |
| Linux Linux | d9eb37db6a28b59a95a3461450ee209654c5f95b | Vendor (CNA) |
| Linux Linux | dd649b49219a0388cc10fc40e4c2ea681566a780 | Vendor (CNA) |
| debian:linux | 6.0.2-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-64kb | 5.14.21-150500.55.113.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-default | 5.14.21-150500.55.113.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-default-base | 5.14.21-150500.55.113.1.150500.6.53.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-docs | 5.14.21-150500.55.113.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP3_Update_59 | 1-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_28 | 1-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-obs-build | 5.14.21-150500.55.113.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-preempt | 5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSS | Package registry (OSV) |
| suse:kernel-rt | 5.3.18-150300.214.1 · SUSE:Linux Enterprise Micro 5.1 | Package registry (OSV) |
| suse:kernel-source | 5.14.21-150500.55.113.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-syms | 5.14.21-150500.55.113.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-zfcpdump | 5.14.21-150500.55.113.1 · SUSE:Linux Enterprise Server 15 SP5-LTSS | 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
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/1691a48aef0a82d1754b9853dae7e3f5cacdf70b
- git.kernel.org/stable/c/552ba102a6898630a7d16887f29e606d6fabe508
- git.kernel.org/stable/c/66689c5c02acd4d76c28498fe220998610aec61e
- git.kernel.org/stable/c/864e280cb3a9a0f5212b16ef5057c4e692f7039d
- git.kernel.org/stable/c/cdb9a8da9b84800eb15506cd9363cf0cf059e677
- git.kernel.org/stable/c/d9eb37db6a28b59a95a3461450ee209654c5f95b
- git.kernel.org/stable/c/dd649b49219a0388cc10fc40e4c2ea681566a780
Vendor advisories and official records. Exploit/PoC links are deliberately left out.