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NVD / CVE Program· CNA Linux

CVE-2026-74394: RDMA/srpt: fix integer overflow in immediate data length check

Noroxi assessment

Priority: Monitor (action score 39/100)

  • 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: 0.54% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 067b9556eeb007f28b7c2033b4dcde5b6d88418f, 07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e, 3efa5301137140a3ca3677a9098c0a93a0acfd49.

Low priority for now. Upgrade to Linux Linux 067b9556eeb007f28b7c2033b4dcde5b6d88418f, 07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e, 3efa5301137140a3ca3677a9098c0a93a0acfd49 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/srpt: fix integer overflow in immediate data length check imm_buf->len is a user-controlled uint32_t received from the network. Adding it to imm_data_offset without overflow checking allows a malicious initiator to send len=0xFFFFFFFF, causing req_size to wrap around to a small value, bypassing the bounds check, and subsequently passing a ~4GB length to sg_init_one(). Use check_add_overflow() to detect wrapping before the comparison.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Aug 15, 2026
Updated
Oct 16, 2026
EPSS
0.5% · 45th percentile
CWE
—

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

—

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

    • 5.0affected
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before c82c860f8c8e4f4f454c9f14d0ad0c0466965f7daffected · git
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before 3efa5301137140a3ca3677a9098c0a93a0acfd49affected · git
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before 067b9556eeb007f28b7c2033b4dcde5b6d88418faffected · git
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before dcf7a986f377cce0749ed53f1d64195fbd5fdf91affected · git
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before 07dec3f6dcb6c6cc891162d252b800eb0e6d5e8eaffected · git
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before 65572fbd86033ae2370125593d59b8be34253aafaffected · git
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before 72497172a4799119a0282a5eb5e2b8ddcc821921affected · git
    • 5dabcd0456d7ee17c2c7a17d7c2305444d2b9639 and later · before eb4ecdf631fe00e8020bf461503cb9b7017ed796affected · git
    • before 5.0not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1
SUSE:Linux Enterprise Live Patching 15 SP4kernel-livepatch-SLE15-SP4_Update_50before 10-150400.2.110-150400.2.1
SUSE:Linux Enterprise Live Patching 15 SP4kernel-livepatch-SLE15-SP4_Update_53before 7-150400.2.17-150400.2.1
SUSE:Linux Enterprise Live Patching 15 SP4kernel-livepatch-SLE15-SP4_Update_58before 3-150400.2.13-150400.2.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_30before 19-150500.2.119-150500.2.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_33before 14-150500.2.114-150500.2.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_44before 3-150500.2.13-150500.2.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_16before 15-150600.2.115-150600.2.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_21before 10-150600.2.110-150600.2.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_29before 4-150600.2.14-150600.2.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_30before 3-150600.2.13-150600.2.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_18before 5-150700.2.15-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_19before 4-150700.2.14-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_20before 3-150700.2.13-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_4before 18-150700.2.118-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_7before 13-150700.2.113-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7-RT_Update_13before 8-150700.2.18-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7-RT_Update_19before 3-150700.2.13-150700.2.1
SUSE:Linux Micro 6.1kernel-livepatch-MICRO-6-0_Update_11before 17-1.117-1.1
SUSE:Linux Micro 6.1kernel-livepatch-MICRO-6-0_Update_12before 17-1.117-1.1
SUSE:Linux Micro 6.1kernel-livepatch-MICRO-6-0_Update_13before 15-1.115-1.1
SUSE:Linux Micro 6.1kernel-livepatch-MICRO-6-0_Update_14before 13-1.213-1.2

+62

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-74390Aug 15, 2026 · RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs
    31Monitor
  • ← EarlierCVE-2026-74391Aug 15, 2026 · tracing: Bound synthetic-field strings with seq_buf
    0Monitor
  • Later →CVE-2026-74396Aug 15, 2026 · RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure
    30Monitor

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 Linux067b9556eeb007f28b7c2033b4dcde5b6d88418fVendor (CNA)
Linux Linux07dec3f6dcb6c6cc891162d252b800eb0e6d5e8eVendor (CNA)
Linux Linux3efa5301137140a3ca3677a9098c0a93a0acfd49Vendor (CNA)
Linux Linux65572fbd86033ae2370125593d59b8be34253aafVendor (CNA)
Linux Linux72497172a4799119a0282a5eb5e2b8ddcc821921Vendor (CNA)
Linux Linuxc82c860f8c8e4f4f454c9f14d0ad0c0466965f7dVendor (CNA)
Linux Linuxdcf7a986f377cce0749ed53f1d64195fbd5fdf91Vendor (CNA)
Linux Linuxeb4ecdf631fe00e8020bf461503cb9b7017ed796Vendor (CNA)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)
suse:kernel-livepatch-SLE15-SP4_Update_537-150400.2.1 · SUSE:Linux Enterprise Live Patching 15 SP4Package registry (OSV)
suse:kernel-livepatch-SLE15-SP5_Update_3019-150500.2.1 · SUSE:Linux Enterprise Live Patching 15 SP5Package registry (OSV)
suse:kernel-livepatch-SLE15-SP5_Update_443-150500.2.1 · SUSE:Linux Enterprise Live Patching 15 SP5Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_1615-150600.2.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_2110-150600.2.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_294-150600.2.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7_Update_194-150700.2.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7_Update_203-150700.2.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7_Update_418-150700.2.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7_Update_713-150700.2.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7-RT_Update_138-150700.2.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7-RT_Update_193-150700.2.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_108-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_118-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_126-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_136-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_146-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_154-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_163-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_512-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-livepatch-SLE16-RT_Update_611-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)

+3

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

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. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records