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NVD / CVE Program· CNA Linux

CVE-2022-50475: RDMA/core: Make sure "ib_port" is valid when access sysfs node

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 5e15ff29b156bbbdeadae230c8ecd5ecd8ca2477, ac7a7d7079124f46180714b2d41a1703d37101bb, cd06d32a71fbb198b2d43dddf794badd80ffd25d.

Low priority for now. Upgrade to Linux Linux 5e15ff29b156bbbdeadae230c8ecd5ecd8ca2477, ac7a7d7079124f46180714b2d41a1703d37101bb, cd06d32a71fbb198b2d43dddf794badd80ffd25d or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Make sure "ib_port" is valid when access sysfs node The "ib_port" structure must be set before adding the sysfs kobject, and reset after removing it, otherwise it may crash when accessing the sysfs node: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050 Mem abort info: ESR = 0x96000006 Exception class = DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp = 00000000e85f5ba5 [0000000000000050] pgd=0000000848fd9003, pud=000000085b387003, pmd=0000000000000000 Internal error: Oops: 96000006 [#2] PREEMPT SMP Modules linked in: ib_umad(O) mlx5_ib(O) nfnetlink_cttimeout(E) nfnetlink(E) act_gact(E) cls_flower(E) sch_ingress(E) openvswitch(E) nsh(E) nf_nat_ipv6(E) nf_nat_ipv4(E) nf_conncount(E) nf_nat(E) nf_conntrack(E) nf_defrag_ipv6(E) nf_defrag_ipv4(E) mst_pciconf(O) ipmi_devintf(E) ipmi_msghandler(E) ipmb_dev_int(OE) mlx5_core(O) mlxfw(O) mlxdevm(O) auxiliary(O) ib_uverbs(O) ib_core(O) mlx_compat(O) psample(E) sbsa_gwdt(E) uio_pdrv_genirq(E) uio(E) mlxbf_pmc(OE) mlxbf_gige(OE) mlxbf_tmfifo(OE) gpio_mlxbf2(OE) pwr_mlxbf(OE) mlx_trio(OE) i2c_mlxbf(OE) mlx_bootctl(OE) bluefield_edac(OE) knem(O) ip_tables(E) ipv6(E) crc_ccitt(E) [last unloaded: mst_pci] Process grep (pid: 3372, stack limit = 0x0000000022055c92) CPU: 5 PID: 3372 Comm: grep Tainted: G D OE 4.19.161-mlnx.47.gadcd9e3 #1 Hardware name: https://www.mellanox.com BlueField SoC/BlueField SoC, BIOS BlueField:3.9.2-15-ga2403ab Sep 8 2022 pstate: 40000005 (nZcv daif -PAN -UAO) pc : hw_stat_port_show+0x4c/0x80 [ib_core] lr : port_attr_show+0x40/0x58 [ib_core] sp : ffff000029f43b50 x29: ffff000029f43b50 x28: 0000000019375000 x27: ffff8007b821a540 x26: ffff000029f43e30 x25: 0000000000008000 x24: ffff000000eaa958 x23: 0000000000001000 x22: ffff8007a4ce3000 x21: ffff8007baff8000 x20: ffff8007b9066ac0 x19: ffff8007bae97578 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff8007a4ce4000 x7 : 0000000000000000 x6 : 000000000000003f x5 : ffff000000e6a280 x4 : ffff8007a4ce3000 x3 : 0000000000000000 x2 : aaaaaaaaaaaaaaab x1 : ffff8007b9066a10 x0 : ffff8007baff8000 Call trace: hw_stat_port_show+0x4c/0x80 [ib_core] port_attr_show+0x40/0x58 [ib_core] sysfs_kf_seq_show+0x8c/0x150 kernfs_seq_show+0x44/0x50 seq_read+0x1b4/0x45c kernfs_fop_read+0x148/0x1d8 __vfs_read+0x58/0x180 vfs_read+0x94/0x154 ksys_read+0x68/0xd8 __arm64_sys_read+0x28/0x34 el0_svc_common+0x88/0x18c el0_svc_handler+0x78/0x94 el0_svc+0x8/0xe8 Code: f2955562 aa1603e4 aa1503e0 f9405683 (f9402861)

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 4, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.14 and later · before 5.15.86
  • linux linux kernel5.16 and later · before 6.0.16
  • linux linux kernel6.1 and later · before 6.1.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.14affected
    • d8a5883814b9f7c08d7ff291070687d925b4f859 and later · before f981c697b2f9bd5dd2f060e47ff8b5e0a2cd0c06affected · git
    • d8a5883814b9f7c08d7ff291070687d925b4f859 and later · before ac7a7d7079124f46180714b2d41a1703d37101bbaffected · git
    • d8a5883814b9f7c08d7ff291070687d925b4f859 and later · before cd06d32a71fbb198b2d43dddf794badd80ffd25daffected · git
    • d8a5883814b9f7c08d7ff291070687d925b4f859 and later · before 5e15ff29b156bbbdeadae230c8ecd5ecd8ca2477affected · git
    • before 5.14not affected · semver
    • 5.15.86 and later · up to and including 5.15.*not affected · semver
    • 6.0.16 and later · up to and including 6.0.*not affected · semver
    • 6.1.2 and later · up to and including 6.1.*not affected · semver
    • 6.2 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-64kbbefore 5.14.21-150400.24.184.15.14.21-150400.24.184.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-docsbefore 5.14.21-150400.24.184.15.14.21-150400.24.184.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-obs-buildbefore 5.14.21-150400.24.184.15.14.21-150400.24.184.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-sourcebefore 5.14.21-150400.24.184.15.14.21-150400.24.184.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-symsbefore 5.14.21-150400.24.184.15.14.21-150400.24.184.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-64kbbefore 5.14.21-150500.55.127.15.14.21-150500.55.127.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-docsbefore 5.14.21-150500.55.127.15.14.21-150500.55.127.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-obs-buildbefore 5.14.21-150500.55.127.15.14.21-150500.55.127.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-symsbefore 5.14.21-150500.55.127.15.14.21-150500.55.127.1
SUSE:Linux Enterprise Live Patching 15 SP4kernel-livepatch-SLE15-SP4_Update_46before 1-150400.9.5.11-150400.9.5.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_32before 1-150500.11.3.11-150500.11.3.1
SUSE:Linux Enterprise Micro 5.3kernel-defaultbefore 5.14.21-150400.24.184.15.14.21-150400.24.184.1
SUSE:Linux Enterprise Micro 5.3kernel-default-basebefore 5.14.21-150400.24.184.1.150400.24.94.25.14.21-150400.24.184.1.150400.24.94.2
SUSE:Linux Enterprise Micro 5.3kernel-rtbefore 5.14.21-150400.15.136.15.14.21-150400.15.136.1
SUSE:Linux Enterprise Micro 5.3kernel-source-rtbefore 5.14.21-150400.15.136.15.14.21-150400.15.136.1
SUSE:Linux Enterprise Micro 5.5kernel-defaultbefore 5.14.21-150500.55.127.15.14.21-150500.55.127.1
SUSE:Linux Enterprise Micro 5.5kernel-default-basebefore 5.14.21-150500.55.127.1.150500.6.61.15.14.21-150500.55.127.1.150500.6.61.1
SUSE:Linux Enterprise Micro 5.5kernel-rtbefore 5.14.21-150500.13.112.15.14.21-150500.13.112.1
SUSE:Linux Enterprise Micro 5.5kernel-sourcebefore 5.14.21-150500.55.127.15.14.21-150500.55.127.1
SUSE:Linux Enterprise Micro 5.5kernel-source-rtbefore 5.14.21-150500.13.112.15.14.21-150500.13.112.1
SUSE:Linux Enterprise Server 15 SP4-LTSSkernel-zfcpdumpbefore 5.14.21-150400.24.184.15.14.21-150400.24.184.1
SUSE:Linux Enterprise Server 15 SP5-LTSSkernel-zfcpdumpbefore 5.14.21-150500.55.127.15.14.21-150500.55.127.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50473Oct 4, 2025 · cpufreq: Init completion before kobject_init_and_add()
    22Monitor
  • ← EarlierCVE-2022-50474Oct 4, 2025 · macintosh: fix possible memory leak in macio_add_one_device()
    22Monitor
  • Later →CVE-2022-50476Oct 4, 2025 · ntb_netdev: Use dev_kfree_skb_any() in interrupt context
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux5e15ff29b156bbbdeadae230c8ecd5ecd8ca2477Vendor (CNA)
Linux Linuxac7a7d7079124f46180714b2d41a1703d37101bbVendor (CNA)
Linux Linuxcd06d32a71fbb198b2d43dddf794badd80ffd25dVendor (CNA)
Linux Linuxf981c697b2f9bd5dd2f060e47ff8b5e0a2cd0c06Vendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)
suse:kernel-64kb5.14.21-150400.24.184.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:kernel-default5.14.21-150400.24.184.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)
suse:kernel-default-base5.14.21-150400.24.184.1.150400.24.94.2 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)
suse:kernel-docs5.14.21-150400.24.184.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP4_Update_461-150400.9.5.1 · SUSE:Linux Enterprise Live Patching 15 SP4Package registry (OSV)
suse:kernel-livepatch-SLE15-SP5_Update_321-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5Package registry (OSV)
suse:kernel-obs-build5.14.21-150400.24.184.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:kernel-rt5.14.21-150400.15.136.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)
suse:kernel-source5.14.21-150400.24.184.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:kernel-source-rt5.14.21-150400.15.136.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)
suse:kernel-syms5.14.21-150400.24.184.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:kernel-zfcpdump5.14.21-150400.24.184.1 · SUSE:Linux Enterprise Server 15 SP4-LTSSPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records