5.5

CVE-2023-53315

wifi: ath11k: Fix SKB corruption in REO destination ring

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.

Crash Signature :

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)

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.6 < 5.10.181
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.113
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.30
Linux ≫ Linux Kernel Version >= 6.2 < 6.3.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.041
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/866921dc06b94df91acfcf9359b57da943ed99b3
Patch
https://git.kernel.org/stable/c/3d3f8fe01a01d94a17fe1ae0d2e894049a972717
Patch
https://git.kernel.org/stable/c/068fd06148fbf0af95bb08dc77cff34ee679fdbc
Patch
https://git.kernel.org/stable/c/67459491f78146bcf7d93596e5b709d063dff5d8
Patch
https://git.kernel.org/stable/c/f9fff67d2d7ca6fa8066132003a3deef654c55b1
Patch