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CVE-2026-45857— scsi: csiostor: Fix dereference of null pointer rn

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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scsi csiostor模块在错误退出路径中解引用空指针rn。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 16ccbfddcb32365138c806cf572e69b42a193c5c affected
a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 44ef9f81392de885883f73b9f5c43936a82ae9d7 affected
a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 526ea3c0ccd495b0079db3e28fdddd51c1bf01f7 affected
a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 25d623f0d77c11a256a54e860d00c239aa9a2583 affected
a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 6037124dbf675fbd0a6248aaf04cf07387b8c323 affected
a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 25ab5e97d3c5f3ed594b4a65d1cc99dc24756681 affected
a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 3bbbab7b6949c76df64210348adbefedaabbf549 affected
a3667aaed5698b84bad2f1b3f71adc86499f4bc6< 1982257570b84dc33753d536dd969fd357a014e9 affected
… +10 more rows
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I. Basic Information for CVE-2026-45857

Vulnerability Information
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Vulnerability Title
scsi: csiostor: Fix dereference of null pointer rn
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: csiostor: Fix dereference of null pointer rn The error exit path when rn is NULL ends up deferencing the null pointer rn via the use of the macro CSIO_INC_STATS. Fix this by adding a new error return path label after the use of the macro to avoid the deference.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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scsi csiostor模块在错误退出路径中解引用空指针rn。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux a3667aaed5698b84bad2f1b3f71adc86499f4bc6 ~ 16ccbfddcb32365138c806cf572e69b42a193c5c -
Linux Linux 3.8 -

II. Public POCs for CVE-2026-45857

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III. Intelligence Information for CVE-2026-45857

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Patches & Fixes for CVE-2026-45857 (8)

Same Patch Batch · Linux · 2026-05-27 · 275 CVEs total

CVE-2026-46039 9.8 CRITICAL rxgk: Fix potential integer overflow in length check
CVE-2026-45898 9.8 CRITICAL RDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-45972 9.8 CRITICAL smb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-45988 9.8 CRITICAL rxrpc: Fix re-decryption of RESPONSE packets
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-2025-71311 8.2 HIGH fs/ntfs3: Initialize new folios before use
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-2026-46010 8.1 HIGH rxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-46099 8.1 HIGH net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-46076 7.9 HIGH KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-45910 7.8 HIGH RDMA/rxe: Fix race condition in QP timer handlers
CVE-2026-45931 7.8 HIGH accel/amdxdna: Hold mm structure across iommu_sva_unbind_device()
CVE-2026-45956 7.8 HIGH drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()
CVE-2026-46036 7.8 HIGH vfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
CVE-2026-46100 7.8 HIGH fs: afs: revert mmap_prepare() change
CVE-2026-45894 7.8 HIGH iommu/vt-d: Clear Present bit before tearing down PASID entry
CVE-2026-45933 7.8 HIGH bpf: Preserve id of register in sync_linked_regs()

Showing top 20 of 275 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45857

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