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CVE-2026-46127— RDMA/ocrdma: Don't NULL deref uctx on errors in ocrdma_copy_pd_uresp()

AI Predicted 5.5 Difficulty: Moderate EPSS 0.02% · P7

Possible ATT&CK Techniques 1AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxfe2caefcdf5869f308c102e3d64d40683bfad711< b610f33c5523fe26f6dd897667fff9c7a1de5905affected
fe2caefcdf5869f308c102e3d64d40683bfad711< 443c991fbc954cc9363e963c09f404b9f281f3a2affected
fe2caefcdf5869f308c102e3d64d40683bfad711< 27b6eb1f27fda9bdd5cae028e396758cdf525845affected
fe2caefcdf5869f308c102e3d64d40683bfad711< e01a957561f663d3b68d2fd233a4502e3367efcdaffected
fe2caefcdf5869f308c102e3d64d40683bfad711< 75fc130664ae324e7b2f9ad3630e0f175e9ca6c8affected
fe2caefcdf5869f308c102e3d64d40683bfad711< 8832626a483439e207734e027afff322ccdf726eaffected
fe2caefcdf5869f308c102e3d64d40683bfad711< ec44c00a4fe1327efa35083f98b39c01cb535a51affected
fe2caefcdf5869f308c102e3d64d40683bfad711< 34fbf48cf3b410d2a6e8c586fa952a36331ca5baaffected
… +10 more rows
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I. Basic Information for CVE-2026-46127

Vulnerability Information
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Vulnerability Title
RDMA/ocrdma: Don't NULL deref uctx on errors in ocrdma_copy_pd_uresp()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/ocrdma: Don't NULL deref uctx on errors in ocrdma_copy_pd_uresp() Sashiko points out that pd->uctx isn't initialized until late in the function so all these error flow references are NULL and will crash. Use the uctx that isn't NULL.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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ocrdma_copy_pd_uresp()中错误路径对未初始化的pd->uctx进行空指针解引用，可能导致崩溃。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux fe2caefcdf5869f308c102e3d64d40683bfad711 ~ b610f33c5523fe26f6dd897667fff9c7a1de5905 -
LinuxLinux 3.5 -

II. Public POCs for CVE-2026-46127

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III. Intelligence Information for CVE-2026-46127

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Patches & Fixes for CVE-2026-46127 (8)

Same Patch Batch · Linux · 2026-05-28 · 138 CVEs total

CVE-2026-461379.8 CRITICALmptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-461959.8 CRITICALsmb: client: validate dacloffset before building DACL pointers
CVE-2026-461159.8 CRITICALblock: add pgmap check to biovec_phys_mergeable
CVE-2026-461359.8 CRITICALnvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-461859.1 CRITICALsmb/client: fix out-of-bounds read in symlink_data()
CVE-2026-461199.1 CRITICALlibceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-461559.1 CRITICALsmb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-461668.8 HIGHwifi: mac80211: use safe list iteration in radar detect work
CVE-2026-461258.8 HIGHwifi: mac80211: remove station if connection prep fails
CVE-2026-461748.8 HIGHx86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-461988.8 HIGHbatman-adv: fix integer overflow on buff_pos
CVE-2026-462388.8 HIGHbatman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-461138.8 HIGHKVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-461528.8 HIGHwifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-462128.8 HIGHbatman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-461388.1 HIGHBluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-462328.1 HIGHHID: playstation: Clamp num_touch_reports
CVE-2026-461457.8 HIGHRDMA/mana: Validate rx_hash_key_len
CVE-2026-461767.8 HIGHRDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()
CVE-2026-461977.8 HIGHdrm/amdkfd: validate SVM ioctl nattr against buffer size

Showing top 20 of 138 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46127

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