CVE-2026-43128

Katalog CVE

CVSS 7.8 · High EPSS 0,18%

Kerentanan Double Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix double dma_buf_unpin in failure path In ib_umem_dmabuf_get_pinned_with_dma_device(), the call to ib_umem_dmabuf_map_pages() can fail. If this occurs, the dmabuf is immediately unpinned but the umem_dmabuf->pinned flag is still set. Then, when ib_umem_release() is called, it calls ib_umem_dmabuf_revoke() which will call dma_buf_unpin() again. Fix this by removing the immediate unpin upon failure and just let the ib_umem_release/revoke path handle it. This also ensures the proper unmap-unpin unwind ordering if the dmabuf_map_pages call happened to fail due to dma_resv_wait_timeout (and therefore has a non-NULL umem_dmabuf->sgt).

Rincian

Terbit di NVD

6 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-415: Double Free

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/104016eb671e19709721c1b0048dd912dc2e96be patch
• https://git.kernel.org/stable/c/40126bcbefa79ea86672e05dae608596bab38319 patch
• https://git.kernel.org/stable/c/70542b69abff34d24b11ae0bb200cc7a766d18df patch
• https://git.kernel.org/stable/c/b324327ff6f48d8065dca67eb3b91357e72726bd patch
• https://git.kernel.org/stable/c/ba3bf0f1bf1d5d0404678485e872980532fcc2c4 patch
• https://git.kernel.org/stable/c/d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf patch