CVE-2026-46053— net: rds: fix MR cleanup on copy error
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 0d4597c8c5abdeeaf50774066c16683f30184dc8< 91a44b406bc1f9e1c5da0cb7d0d5991b43b79147 | affected |
0d4597c8c5abdeeaf50774066c16683f30184dc8< 106dc689206610cfa2098f593fdd1e020c997835 | affected | ||
0d4597c8c5abdeeaf50774066c16683f30184dc8< ec55a86f7fba7d9111df94b9c11a4755ed492995 | affected | ||
0d4597c8c5abdeeaf50774066c16683f30184dc8< 8fdbb6262a4a3ed44a0830a7793903b54bb27bdc | affected | ||
0d4597c8c5abdeeaf50774066c16683f30184dc8< d95cea9298be1ba8876e3f156be96d3a492085ca | affected | ||
0d4597c8c5abdeeaf50774066c16683f30184dc8< 033370ffb3c9c0264d19f8ba9ef769523266589a | affected | ||
0d4597c8c5abdeeaf50774066c16683f30184dc8< b3cb8cae530b2727d8245684148bb49425f6765c | affected | ||
0d4597c8c5abdeeaf50774066c16683f30184dc8< 8141a2dc70080eda1aedc0389ed2db2b292af5bd | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-46053
Vulnerability Information
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Vulnerability Title
net: rds: fix MR cleanup on copy error
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于rds中MR清理错误，可能导致copy_to_user失败后重复释放资源。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-46053
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-46053 (8)
Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total
| CVE-2026-45898 | 9.8 CRITICAL | RDMA/iwcm: Fix workqueue list corruption by removing work_list |
| CVE-2026-45988 | 9.8 CRITICAL | rxrpc: Fix re-decryption of RESPONSE packets |
| CVE-2026-45972 | 9.8 CRITICAL | smb: client: fix potential UAF and double free in smb2_open_file() |
| CVE-2026-46039 | 9.8 CRITICAL | rxgk: Fix potential integer overflow in length check |
| CVE-2026-46043 | 9.1 CRITICAL | RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv |
| CVE-2026-45945 | 8.8 HIGH | iommu/vt-d: Fix race condition during PASID entry replacement |
| CVE-2026-46056 | 8.8 HIGH | Bluetooth: hci_event: fix potential UAF in SSP passkey handlers |
| CVE-2026-46037 | 8.2 HIGH | ipv4: icmp: validate reply type before using icmp_pointers |
| CVE-2026-45843 | 8.2 HIGH | slip: bound decode() reads against the compressed packet length |
| CVE-2026-46099 | 8.1 HIGH | net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels |
| CVE-2026-46010 | 8.1 HIGH | rxrpc: Fix error handling in rxgk_extract_token() |
| CVE-2026-46076 | 7.9 HIGH | KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 |
| CVE-2026-45862 | 7.8 HIGH | iommu/vt-d: Flush cache for PASID table before using it |
| CVE-2026-46062 | 7.8 HIGH | ntfs3: fix integer overflow in run_unpack() volume boundary check |
| CVE-2026-46006 | 7.8 HIGH | drm/nouveau: fix u32 overflow in pushbuf reloc bounds check |
| CVE-2026-45894 | 7.8 HIGH | iommu/vt-d: Clear Present bit before tearing down PASID entry |
| CVE-2026-46058 | 7.8 HIGH | media: amphion: Fix race between m2m job_abort and device_run |
| CVE-2026-46036 | 7.8 HIGH | vfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex |
| CVE-2026-45878 | 7.8 HIGH | drm/amdkfd: Fix watch_id bounds checking in debug address watch v2 |
| CVE-2026-45852 | 7.8 HIGH | RDMA/rxe: Fix double free in rxe_srq_from_init |
Showing top 20 of 276 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46243
smb: client: reject userspace cifs.spnego descriptions - CVE-2026-46242
eventpoll: fix ep_remove struct eventpoll / struct file UAF - CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf
Same vendor: Linux
- CVE-2026-46243
smb: client: reject userspace cifs.spnego descriptions - CVE-2026-46242
eventpoll: fix ep_remove struct eventpoll / struct file UAF - CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf
V. Comments for CVE-2026-46053
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