CVE-2026-53229net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure
- 7.5HighCVSS base score
- 0.48%Exploitation in 30 daysEPSS · top 58% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 16 days later
· 16 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.48% · top 58% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 84a0a2310d6de247335574649726cb000c7c0074 – < bf0247d34d79d2740b3f1d6cc44dbd38ab2b169e
- affected 84a0a2310d6de247335574649726cb000c7c0074 – < 3bad189a31eb78575ea69f093e8ef5b7e3e8c832
- affected 84a0a2310d6de247335574649726cb000c7c0074 – < 7b3eeba50fbc3b45f279037c29a87a90e8bac1e1
- affected 84a0a2310d6de247335574649726cb000c7c0074 – < 2789b74ae1f4b68333c9d5eec2f3354d07b16e61
- affected 84a0a2310d6de247335574649726cb000c7c0074 – < 0aabca726b43d833721034e97d99efcc8237b22a
- affected 84a0a2310d6de247335574649726cb000c7c0074 – < b69004f5a6ad32da84d8aa5b23b9c0caafe6252e
- affected 5.3
- unaffected < 5.3
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.94 – ≤ 6.12.*
- unaffected 6.18.36 – ≤ 6.18.*
- unaffected 7.0.13 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References6
- https://git.kernel.org/stable/c/bf0247d34d79d2740b3f1d6cc44dbd38ab2b169e (opens in a new tab)
- https://git.kernel.org/stable/c/3bad189a31eb78575ea69f093e8ef5b7e3e8c832 (opens in a new tab)
- https://git.kernel.org/stable/c/7b3eeba50fbc3b45f279037c29a87a90e8bac1e1 (opens in a new tab)
- https://git.kernel.org/stable/c/2789b74ae1f4b68333c9d5eec2f3354d07b16e61 (opens in a new tab)
- https://git.kernel.org/stable/c/0aabca726b43d833721034e97d99efcc8237b22a (opens in a new tab)
- https://git.kernel.org/stable/c/b69004f5a6ad32da84d8aa5b23b9c0caafe6252e (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-39320 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-53229)Record last updated .