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CVE-2026-52908— RDMA：rereg_mr 中 REREG_ACCESS 兼容性漏洞

AI 预测 4.3 利用难度: 困难

影响版本矩阵 12

厂商产品版本范围状态
LinuxLinuxb40656aa7d559adc1fe689396dc58b92a9a27286< 09dc18894148381d3bfc550083b1236043870dceaffected
b40656aa7d559adc1fe689396dc58b92a9a27286< eba5df21eda0fe7418efbea2f799f8ea1b8ca94caffected
b40656aa7d559adc1fe689396dc58b92a9a27286< 2904e985a2917b5dac65df82733065e78a65fc9daffected
b40656aa7d559adc1fe689396dc58b92a9a27286< 50334a05a950840b39a1ce3d2a173b4183db9b3eaffected
b40656aa7d559adc1fe689396dc58b92a9a27286< badad6fad60def1b9805559dd81dbab3d97b82aaaffected
6.2affected
< 6.2unaffected
6.6.143≤ 6.6.*unaffected
… +4 条更多
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一、 漏洞 CVE-2026-52908 基础信息

漏洞信息
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Vulnerability Title
RDMA: During rereg_mr ensure that REREG_ACCESS is compatible
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA: During rereg_mr ensure that REREG_ACCESS is compatible If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be re-evaluated to ensure it is properly pinned as RW. Since the umem is hidden inside each driver's mr struct add a ib_umem_check_rereg() function that each driver has to call before processing IB_MR_REREG_ACCESS. mlx4 has to retain its duplicate ib_access_writable check because it implements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items in place sequentially while the MR is live, so it will continue to not support this combination.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD

受影响产品

厂商产品影响版本CPE订阅
LinuxLinux b40656aa7d559adc1fe689396dc58b92a9a27286 ~ 09dc18894148381d3bfc550083b1236043870dce -
LinuxLinux 6.2 -

二、漏洞 CVE-2026-52908 的公开POC

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三、漏洞 CVE-2026-52908 的情报信息

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CVE-2026-52908 补丁与修复 (5)

同批安全公告 · Linux · 2026-06-19 · 共 3 条

CVE-2026-52910bpf: reuseport cBPF程序释放漏洞
CVE-2026-52909ip6_vti：在备用设备上设置netns_immutable

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-52908

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