CVE-2022-49876

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Source

https://cve.org/CVERecord?id=CVE-2022-49876

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49876.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2022-49876

Downstream

DEBIAN-CVE-2022-49876

UBUNTU-CVE-2022-49876

Published

2025-05-01T14:10:25.040Z

Modified

2026-03-11T07:57:54.680189Z

Severity

5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

wifi: mac80211: fix general-protection-fault in ieee80211_subif_start_xmit()

Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: fix general-protection-fault in ieee80211subifstart_xmit()

When device is running and the interface status is changed, the gpf issue is triggered. The problem triggering process is as follows: Thread A: Thread B ieee80211runtimechangeiftype() processonework() ... ... ieee80211dostop() ... ... ... sdata->bss = NULL ... ... ieee80211subifstartxmit() ieee80211multicasttounicast //!sdata->bss->multicastto_unicast cause gpf issue

When the interface status is changed, the sending queue continues to send packets. After the bss is set to NULL, the bss is accessed. As a result, this causes a general-protection-fault issue.

The following is the stack information: general protection fault, probably for non-canonical address 0xdffffc000000002f: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000178-0x000000000000017f] Workqueue: mld mldifcwork RIP: 0010:ieee80211subifstartxmit+0x25b/0x1310 Call Trace: <TASK> devhardstartxmit+0x1be/0x990 _devqueuexmit+0x2c9a/0x3b60 ip6finishoutput2+0xf92/0x1520 ip6finishoutput+0x6af/0x11e0 ip6output+0x1ed/0x540 mldsendpack+0xa09/0xe70 mldifcwork+0x71c/0xdb0 processonework+0x9bf/0x1710 workerthread+0x665/0x1080 kthread+0x2e4/0x3a0 retfromfork+0x1f/0x30 </TASK>

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49876.json",
    "cna_assigner": "Linux"
}

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

f856373e2f31ffd340e47e2b00027bd4070f74b3

Fixed

03eb68c72cee249aeb7af7d04a83c033aca3d6d9

Fixed

780854186946e0de2be192ee7fa5125666533b3a

Affected versions

v5.*

v5.19

v5.19-rc2

v5.19-rc3

v5.19-rc4

v5.19-rc5

v5.19-rc6

v5.19-rc7

v5.19-rc8

v6.*

v6.0

v6.0-rc1

v6.0-rc2

v6.0-rc3

v6.0-rc4

v6.0-rc5

v6.0-rc6

v6.0-rc7

v6.0.1

v6.0.2

v6.0.3

v6.0.4

v6.0.5

v6.0.6

v6.0.7

v6.0.8

v6.1-rc1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49876.json"

vanir_signatures

[
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        "deprecated": false,
        "signature_version": "v1",
        "digest": {
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            "line_hashes": [
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            ]
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@780854186946e0de2be192ee7fa5125666533b3a",
        "signature_type": "Line",
        "id": "CVE-2022-49876-129c85a7",
        "target": {
            "file": "net/mac80211/tx.c"
        }
    },
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        "signature_type": "Line",
        "id": "CVE-2022-49876-29d058f4",
        "target": {
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        }
    },
    {
        "deprecated": false,
        "signature_version": "v1",
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@780854186946e0de2be192ee7fa5125666533b3a",
        "signature_type": "Function",
        "id": "CVE-2022-49876-80728cdb",
        "target": {
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            "function": "ieee80211_subif_start_xmit"
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    },
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        "signature_type": "Function",
        "id": "CVE-2022-49876-bd9cc946",
        "target": {
            "file": "net/mac80211/tx.c",
            "function": "ieee80211_subif_start_xmit"
        }
    }
]