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CVE-2026-53077— net/rds: Restrict use of RDS/IB to the initial network namespace

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基金会开源的操作系统Linux所使用的内核。 Linux kernel 4.3版本存在安全漏洞，该漏洞源于RDS/IB代码在非初始网络命名空间中将无法正常工作，可能导致限制不当。

CVSS 7.8 · High EPSS 0.12% · P2

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< 3e7f14cd5a51533404e1ae4809caab46073fb5c7 affected
d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< 3174fc703d081d2ca538b22fba734e3ad5b52322 affected
d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< c244b79adffad89a5173cf8bfaa06a6b40bbd09b affected
d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< 07035306bf722f4676a1aee35cbeb3732c76194e affected
d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< fb407343c0c16e94584707b2dfdd350a5f81b000 affected
d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< a7494479757d60d2413bfaa087f8431a26eea032 affected
d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< b6a54f5e9ce9b97ae641855378d71c5154a085c0 affected
d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638< ebf71dd4aff46e8e421d455db3e231ba43d2fa8a affected
… +10 more rows
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I. Basic Information for CVE-2026-53077

Vulnerability Information
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Vulnerability Title
net/rds: Restrict use of RDS/IB to the initial network namespace
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/rds: Restrict use of RDS/IB to the initial network namespace Prevent using RDS/IB in network namespaces other than the initial one. The existing RDS/IB code will not work properly in non-initial network namespaces.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 4.3版本存在安全漏洞，该漏洞源于RDS/IB代码在非初始网络命名空间中将无法正常工作，可能导致限制不当。
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 d5a8ac28a7ff2f250d1bedbb6008dd2f6f6f1638 ~ 3e7f14cd5a51533404e1ae4809caab46073fb5c7 -
Linux Linux 4.3 -

II. Public POCs for CVE-2026-53077

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III. Intelligence Information for CVE-2026-53077

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Patches & Fixes for CVE-2026-53077 (7)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-53049 9.8 CRITICAL gfs2: add some missing log locking
CVE-2026-52993 9.8 CRITICAL tipc: fix double-free in tipc_buf_append()
CVE-2026-52989 9.8 CRITICAL nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-52986 9.8 CRITICAL netfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-52982 9.8 CRITICAL net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-53002 9.8 CRITICAL netfilter: conntrack: remove sprintf usage
CVE-2026-53086 9.8 CRITICAL net: bcmgenet: fix racing timeout handler
CVE-2026-53045 9.8 CRITICAL memory: tegra124-emc: Fix dll_change check
CVE-2026-53006 9.8 CRITICAL ipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-53046 9.8 CRITICAL ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-52955 9.8 CRITICAL libceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-53010 9.8 CRITICAL ksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-53088 9.8 CRITICAL net: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-52914 9.8 CRITICAL batman-adv: fix fragment reassembly length accounting
CVE-2026-53055 9.8 CRITICAL crypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-52924 9.8 CRITICAL sctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-52931 9.8 CRITICAL batman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-52999 9.1 CRITICAL netfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-53043 9.1 CRITICAL ocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-52958 9.1 CRITICAL libceph: Fix potential out-of-bounds access in osdmap_decode()

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53077

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