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NVD / CVE Program· CNA Linux

CVE-2022-49290: mac80211: fix potential double free on mesh join

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.25% (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 12e407a8ef17623823fd0c066fbd7f103953d28d, 273ebddc5fda2967492cb0b6cdd7d81cfb821b76, 3bbd0000d012f92aec423b224784fbf0f7bf40f8.

Low priority for now. Upgrade to Linux Linux 12e407a8ef17623823fd0c066fbd7f103953d28d, 273ebddc5fda2967492cb0b6cdd7d81cfb821b76, 3bbd0000d012f92aec423b224784fbf0f7bf40f8 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: mac80211: fix potential double free on mesh join While commit 6a01afcf8468 ("mac80211: mesh: Free ie data when leaving mesh") fixed a memory leak on mesh leave / teardown it introduced a potential memory corruption caused by a double free when rejoining the mesh: ieee80211_leave_mesh() -> kfree(sdata->u.mesh.ie); ... ieee80211_join_mesh() -> copy_mesh_setup() -> old_ie = ifmsh->ie; -> kfree(old_ie); This double free / kernel panics can be reproduced by using wpa_supplicant with an encrypted mesh (if set up without encryption via "iw" then ifmsh->ie is always NULL, which avoids this issue). And then calling: $ iw dev mesh0 mesh leave $ iw dev mesh0 mesh join my-mesh Note that typically these commands are not used / working when using wpa_supplicant. And it seems that wpa_supplicant or wpa_cli are going through a NETDEV_DOWN/NETDEV_UP cycle between a mesh leave and mesh join where the NETDEV_UP resets the mesh.ie to NULL via a memcpy of default_mesh_setup in cfg80211_netdev_notifier_call, which then avoids the memory corruption, too. The issue was first observed in an application which was not using wpa_supplicant but "Senf" instead, which implements its own calls to nl80211. Fixing the issue by removing the kfree()'ing of the mesh IE in the mesh join function and leaving it solely up to the mesh leave to free the mesh IE.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 16th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · Linux
7.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • 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 kernel4.4.233 and later · before 4.5
  • linux linux kernel4.9.233 and later · before 4.9.309
  • linux linux kernel4.14.192 and later · before 4.14.274
  • linux linux kernel4.19.137 and later · before 4.19.237
  • linux linux kernel5.4.56 and later · before 5.4.188
  • linux linux kernel5.7.13 and later · before 5.10.109
  • linux linux kernel5.11 and later · before 5.15.32
  • linux linux kernel5.16 and later · before 5.16.18
  • linux linux kernel5.17 and later · before 5.17.1

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

    • 12e9cb1e7c93413112260991d094cfda712fdc97, 4f3193e08602462a806e8f53212e79c60a6f7488, 5.8affected
    • 3212d6248faf0efce6b7a718e198feecce0eea05 and later · before 615716af8644813355e014314a0bc1e961250f5aaffected · git
    • 86e7d4cd2ed5f4b0188afce8199faffcf1ae7c7e and later · before c1d9c3628ef0a0ca197595d0f9e01cd3b5dda186affected · git
    • 37bccfa89559a70c044b5ccde3c916a91388e14a and later · before 273ebddc5fda2967492cb0b6cdd7d81cfb821b76affected · git
    • 3f15e3e62c80e180282f0cbc5559264e11c328b7 and later · before 3bbd0000d012f92aec423b224784fbf0f7bf40f8affected · git
    • 6a01afcf8468d3ca2bd8bbb27503f60dcf643b20 and later · before 5d3ff9542a40ce034416bca03864709540a36016affected · git
    • 6a01afcf8468d3ca2bd8bbb27503f60dcf643b20 and later · before 12e407a8ef17623823fd0c066fbd7f103953d28daffected · git
    • 6a01afcf8468d3ca2bd8bbb27503f60dcf643b20 and later · before 582d8c60c0c053684f7138875e8150d5749ffc17affected · git
    • 6a01afcf8468d3ca2bd8bbb27503f60dcf643b20 and later · before 46bb87d40683337757a2f902fcd4244b32bb4e86affected · git
    • 6a01afcf8468d3ca2bd8bbb27503f60dcf643b20 and later · before 4a2d4496e15ea5bb5c8e83b94ca8ca7fb045e7d3affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.17.3-15.17.3-1
Red Hat:rhel_aus:8.4::baseosbpftoolbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseosbpftool-debuginfobefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernelbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-abi-stablelistsbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-corebefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debugbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-corebefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-debuginfobefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-develbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-modulesbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debug-modules-extrabefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debuginfobefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-debuginfo-common-x86_64before 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-develbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-docbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-modulesbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-modules-extrabefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-toolsbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-tools-debuginfobefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseoskernel-tools-libsbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseosperfbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseosperf-debuginfobefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4
Red Hat:rhel_aus:8.4::baseospython3-perfbefore 0:4.18.0-305.184.1.el8_40:4.18.0-305.184.1.el8_4

+85

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49288Feb 26, 2025 · ALSA: pcm: Fix races among concurrent prealloc proc writes
    31Monitor
  • ← EarlierCVE-2022-49289Feb 26, 2025 · uaccess: fix integer overflow on access_ok()
    28Monitor
  • Later →CVE-2022-49291Feb 26, 2025 · ALSA: pcm: Fix races among concurrent hw_params and hw_free calls
    31Monitor

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 Linux12e407a8ef17623823fd0c066fbd7f103953d28dVendor (CNA)
Linux Linux273ebddc5fda2967492cb0b6cdd7d81cfb821b76Vendor (CNA)
Linux Linux3bbd0000d012f92aec423b224784fbf0f7bf40f8Vendor (CNA)
Linux Linux4.14.274Vendor (CNA)
Linux Linux4.19.237Vendor (CNA)
Linux Linux4.5Vendor (CNA)
Linux Linux4.9.309Vendor (CNA)
Linux Linux46bb87d40683337757a2f902fcd4244b32bb4e86Vendor (CNA)
Linux Linux4a2d4496e15ea5bb5c8e83b94ca8ca7fb045e7d3Vendor (CNA)
Linux Linux5.4.188Vendor (CNA)
Linux Linux5.8Vendor (CNA)
Linux Linux582d8c60c0c053684f7138875e8150d5749ffc17Vendor (CNA)
Linux Linux5d3ff9542a40ce034416bca03864709540a36016Vendor (CNA)
Linux Linux615716af8644813355e014314a0bc1e961250f5aVendor (CNA)
Linux Linuxc1d9c3628ef0a0ca197595d0f9e01cd3b5dda186Vendor (CNA)
debian:linux5.17.3-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-372.177.1.el8_6 · Red Hat:rhel_aus:8.6::baseosPackage 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.

  • CVE-2026-31608422 days apartsmb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()
    39Monitor
  • CVE-2026-31609422 days apartsmb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush()
    39Monitor
  • CVE-2026-43011429 days apartnet/x25: Fix potential double free of skb
    39Monitor
  • CVE-2026-43414436 days apartscsi: qla2xxx: Completely fix fcport double free
    39Monitor
  • CVE-2026-52993483 days aparttipc: fix double-free in tipc_buf_append()
    39Monitor
  • CVE-2026-64387514 days apartsmb: client: fix query directory replay double-free
    39Monitor

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

Weakness class (CWE)

CWE-415 · Double Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 (8 more)

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

All records