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

wifi: ath11k: Ignore frags from uninitialized peer in dp.

When max virtual ap interfaces are configured in all the bands with
ACS and hostapd restart is done every 60s, a crash is observed at
random times.
In this certain scenario, a fragmented packet is received for
self peer, for which rx_tid and rx_frags are not initialized in
datapath. While handling this fragment, crash is observed as the
rx_frag list is uninitialised and when we walk in
ath11k_dp_rx_h_sort_frags, skb null leads to exception.

To address this, before processing received fragments we check
dp_setup_done flag is set to ensure that peer has completed its
dp peer setup for fragment queue, else ignore processing the
fragments.

Call trace:
ath11k_dp_process_rx_err+0x550/0x1084 [ath11k]
ath11k_dp_service_srng+0x70/0x370 [ath11k]
0xffffffc009693a04
__napi_poll+0x30/0xa4
net_rx_action+0x118/0x270
__do_softirq+0x10c/0x244
irq_exit+0x64/0xb4
__handle_domain_irq+0x88/0xac
gic_handle_irq+0x74/0xbc
el1_irq+0xf0/0x1c0
arch_cpu_idle+0x10/0x18
do_idle+0x104/0x248
cpu_startup_entry+0x20/0x64
rest_init+0xd0/0xdc
arch_call_rest_init+0xc/0x14
start_kernel+0x480/0x4b8
Code: f9400281 f94066a2 91405021 b94a0023 (f9406401)

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00025.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
d5c65159f2895379e11ca13f62feabe93278985d affected < e78526a06b53718bfc1dfff37864c7760e41f8ec
d5c65159f2895379e11ca13f62feabe93278985d affected < 41efc47f5bc53e63461579e206adc17c4452ab6e
d5c65159f2895379e11ca13f62feabe93278985d affected < a06bfb3c9f69f303692cdae87bc0899d2ae8b2a6
Linux Linux affected
Version Status Constraints
5.6 affected —
0 unaffected < 5.6
6.1.30 unaffected ≤ 6.1.*
6.3.4 unaffected ≤ 6.3.*
6.4 unaffected ≤ *

No data.

No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/41efc47f5bc53e63461579e206adc17c4452ab6e cve-icon cve-icon
https://git.kernel.org/stable/c/a06bfb3c9f69f303692cdae87bc0899d2ae8b2a6 cve-icon cve-icon
https://git.kernel.org/stable/c/e78526a06b53718bfc1dfff37864c7760e41f8ec cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025120950-CVE-2023-53822-c4da@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53822 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53822 cve-icon
History

Wed, 10 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Tue, 09 Dec 2025 02:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: Ignore frags from uninitialized peer in dp. When max virtual ap interfaces are configured in all the bands with ACS and hostapd restart is done every 60s, a crash is observed at random times. In this certain scenario, a fragmented packet is received for self peer, for which rx_tid and rx_frags are not initialized in datapath. While handling this fragment, crash is observed as the rx_frag list is uninitialised and when we walk in ath11k_dp_rx_h_sort_frags, skb null leads to exception. To address this, before processing received fragments we check dp_setup_done flag is set to ensure that peer has completed its dp peer setup for fragment queue, else ignore processing the fragments. Call trace: ath11k_dp_process_rx_err+0x550/0x1084 [ath11k] ath11k_dp_service_srng+0x70/0x370 [ath11k] 0xffffffc009693a04 __napi_poll+0x30/0xa4 net_rx_action+0x118/0x270 __do_softirq+0x10c/0x244 irq_exit+0x64/0xb4 __handle_domain_irq+0x88/0xac gic_handle_irq+0x74/0xbc el1_irq+0xf0/0x1c0 arch_cpu_idle+0x10/0x18 do_idle+0x104/0x248 cpu_startup_entry+0x20/0x64 rest_init+0xd0/0xdc arch_call_rest_init+0xc/0x14 start_kernel+0x480/0x4b8 Code: f9400281 f94066a2 91405021 b94a0023 (f9406401) Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Title wifi: ath11k: Ignore frags from uninitialized peer in dp.
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-20T08:51:27.266Z

Reserved: 2025-12-09T01:27:17.824Z

Link: CVE-2023-53822

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-09T16:17:20.993

Modified: 2025-12-09T18:37:13.640

Link: CVE-2023-53822

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-09T00:00:00Z

Links: CVE-2023-53822 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses