net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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Configuration 1 [-]
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Ubuntu USN |
USN-8726-1 | Linux kernel vulnerabilities |
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USN-8727-1 | Linux kernel (OEM) vulnerabilities |
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USN-8728-1 | Linux kernel (GCP) vulnerabilities |
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USN-8760-1 | Linux kernel (NVIDIA) vulnerabilities |
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USN-8726-2 | Linux kernel (Raspberry Pi) vulnerabilities |
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USN-8726-3 | Linux kernel (IBM) vulnerabilities |
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USN-8800-1 | Linux kernel (NVIDIA BaseOS) vulnerabilities |
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USN-8760-2 | Linux kernel (NVIDIA) vulnerabilities |
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USN-8726-4 | Linux kernel vulnerabilities |
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USN-8728-2 | Linux kernel (Azure) vulnerabilities |
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USN-8728-3 | Linux kernel (Oracle) vulnerabilities |
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USN-8903-1 | Linux kernel vulnerabilities |
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USN-8904-1 | Linux kernel (Azure) vulnerabilities |
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USN-8905-1 | Linux kernel (GCP) vulnerabilities |
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USN-8906-1 | Linux kernel (IBM) vulnerabilities |
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USN-8903-2 | Linux kernel vulnerabilities |
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USN-8905-2 | Linux kernel (GCP) vulnerabilities |
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USN-9025-1 | Linux kernel vulnerabilities |
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USN-9066-1 | Linux kernel (HWE) vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.479% probability within 30 days)
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| Description | In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure In the XSK branch of mlx5e_xmit_xdp_buff(), when sq->xmit_xdp_frame() returns false (e.g. XDPSQ is full), the function returns without unmapping the DMA address or freeing the xdp_frame allocated by xdp_convert_zc_to_xdp_frame(). The xdpi_fifo push only happens on success, so the completion path cannot recover these entries. With CONFIG_DMA_API_DEBUG=y, the leak surfaces on driver unbind: DMA-API: pci 0000:08:00.0: device driver has pending DMA allocations while released from device [count=1116] One of leaked entries details: [device address=0x000000010ffd7028] [size=1534 bytes] [mapped with DMA_TO_DEVICE] [mapped as phy] WARNING: kernel/dma/debug.c:881 at dma_debug_device_change+0x127/0x180 ... DMA-API: Mapped at: debug_dma_map_phys+0x4b/0xd0 dma_map_phys+0xfd/0x2d0 mlx5e_xdp_handle+0x5ae/0xac0 [mlx5_core] mlx5e_xsk_skb_from_cqe_mpwrq_linear+0xc4/0x170 [mlx5_core] mlx5e_handle_rx_cqe_mpwrq+0xc1/0x290 [mlx5_core] Add the missing unmap + xdp_return_frame, matching the cleanup already done in mlx5e_xdp_xmit(). has_frags is rejected earlier in this branch, so no per-frag unmap is needed. | |
| Title | net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure | |
| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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