CVE-2023-53315
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath11k: Fix SKB corruption in REO destination ring
While running traffics for a long time, randomly an RX descriptor filled with value "0" from REO destination ring is received. This descriptor which is invalid causes the wrong SKB (SKB stored in the IDR lookup with buffer id "0") to be fetched which in turn causes SKB memory corruption issue and the same leads to crash after some time.
Changed the start id for idr allocation to "1" and the buffer id "0" is reserved for error validation. Introduced Sanity check to validate the descriptor, before processing the SKB.
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Crash Signature :
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Detalles técnicos trazas, registros y código del informe original
Unable to handle kernel paging request at virtual address 3f004900 PC points to "b15_dma_inv_range+0x30/0x50" LR points to "dma_cache_maint_page+0x8c/0x128". The Backtrace obtained is as follows: [<8031716c>] (b15_dma_inv_range) from [<80313a4c>] (dma_cache_maint_page+0x8c/0x128) [<80313a4c>] (dma_cache_maint_page) from [<80313b90>] (__dma_page_dev_to_cpu+0x28/0xcc) [<80313b90>] (__dma_page_dev_to_cpu) from [<7fb5dd68>] (ath11k_dp_process_rx+0x1e8/0x4a4 [ath11k]) [<7fb5dd68>] (ath11k_dp_process_rx [ath11k]) from [<7fb53c20>] (ath11k_dp_service_srng+0xb0/0x2ac [ath11k]) [<7fb53c20>] (ath11k_dp_service_srng [ath11k]) from [<7f67bba4>] (ath11k_pci_ext_grp_napi_poll+0x1c/0x78 [ath11k_pci]) [<7f67bba4>] (ath11k_pci_ext_grp_napi_poll [ath11k_pci]) from [<807d5cf4>] (__napi_poll+0x28/0xb8) [<807d5cf4>] (__napi_poll) from [<807d5f28>] (net_rx_action+0xf0/0x280) [<807d5f28>] (net_rx_action) from [<80302148>] (__do_softirq+0xd0/0x280) [<80302148>] (__do_softirq) from [<80320408>] (irq_exit+0x74/0xd4) [<80320408>] (irq_exit) from [<803638a4>] (__handle_domain_irq+0x90/0xb4) [<803638a4>] (__handle_domain_irq) from [<805bedec>] (gic_handle_irq+0x58/0x90) [<805bedec>] (gic_handle_irq) from [<80301a78>] (__irq_svc+0x58/0x8c)
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.23%
- Percentil entre todas las CVEs puntuadas: 13
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-401
- CWE-401
Referencias
- https://git.kernel.org/stable/c/068fd06148fbf0af95bb08dc77cff34ee679fdbc
- https://git.kernel.org/stable/c/3d3f8fe01a01d94a17fe1ae0d2e894049a972717
- https://git.kernel.org/stable/c/67459491f78146bcf7d93596e5b709d063dff5d8
- https://git.kernel.org/stable/c/866921dc06b94df91acfcf9359b57da943ed99b3
- https://git.kernel.org/stable/c/f9fff67d2d7ca6fa8066132003a3deef654c55b1
JSON original (NVD)
Mostrar
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: Fix SKB corruption in REO destination ring\n\nWhile running traffics for a long time, randomly an RX descriptor\nfilled with value \"0\" from REO destination ring is received.\nThis descriptor which is invalid causes the wrong SKB (SKB stored in\nthe IDR lookup with buffer id \"0\") to be fetched which in turn\ncauses SKB memory corruption issue and the same leads to crash\nafter some time.\n\nChanged the start id for idr allocation to \"1\" and the buffer id \"0\"\nis reserved for error validation. Introduced Sanity check to validate\nthe descriptor, before processing the SKB.\n\nCrash Signature :\n\nUnable to handle kernel paging request at virtual address 3f004900\nPC points to \"b15_dma_inv_range+0x30/0x50\"\nLR points to \"dma_cache_maint_page+0x8c/0x128\".\nThe Backtrace obtained is as follows:\n[<8031716c>] (b15_dma_inv_range) from [<80313a4c>] (dma_cache_maint_page+0x8c/0x128)\n[<80313a4c>] (dma_cache_maint_page) from [<80313b90>] (__dma_page_dev_to_cpu+0x28/0xcc)\n[<80313b90>] (__dma_page_dev_to_cpu) from [<7fb5dd68>] (ath11k_dp_process_rx+0x1e8/0x4a4 [ath11k])\n[<7fb5dd68>] (ath11k_dp_process_rx [ath11k]) from [<7fb53c20>] (ath11k_dp_service_srng+0xb0/0x2ac [ath11k])\n[<7fb53c20>] (ath11k_dp_service_srng [ath11k]) from [<7f67bba4>] (ath11k_pci_ext_grp_napi_poll+0x1c/0x78 [ath11k_pci])\n[<7f67bba4>] (ath11k_pci_ext_grp_napi_poll [ath11k_pci]) from [<807d5cf4>] (__napi_poll+0x28/0xb8)\n[<807d5cf4>] (__napi_poll) from [<807d5f28>] (net_rx_action+0xf0/0x280)\n[<807d5f28>] (net_rx_action) from [<80302148>] (__do_softirq+0xd0/0x280)\n[<80302148>] (__do_softirq) from [<80320408>] (irq_exit+0x74/0xd4)\n[<80320408>] (irq_exit) from [<803638a4>] (__handle_domain_irq+0x90/0xb4)\n[<803638a4>] (__handle_domain_irq) from [<805bedec>] (gic_handle_irq+0x58/0x90)\n[<805bedec>] (gic_handle_irq) from [<80301a78>] (__irq_svc+0x58/0x8c)\n\nTested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1"
}
],
"lastModified": "2026-08-04T10:19:01.657",
"configurations": [
{
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