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CVE-2026-90307· NVD / CVE Program· CNA Linux

RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 001adf2fe87d1ab677c014a97467bbea5153ae5f, 0e7ba617514902501514d577647d866e670dad90, 138eb2f0ef02adfe6ad126afad5b54c56b5046ee; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.

Low priority for now. Upgrade to Linux Linux 001adf2fe87d1ab677c014a97467bbea5153ae5f, 0e7ba617514902501514d577647d866e670dad90, 138eb2f0ef02adfe6ad126afad5b54c56b5046ee; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 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/srp: fix heap information leak on a truncated SRP_CRED_REQ srp_recv_done() passes wc->byte_len to srp_process_rsp(). It passes nothing to srp_process_cred_req() and srp_process_aer_req(), which read fixed-size fields from the receive buffer without checking that those fields were received. The buffer size is max_ti_iu_len, which comes from the login response and is not validated. A target that advertises 8 and then sends an 8-byte SRP_CRED_REQ makes the initiator read req->tag from beyond the end of the buffer. req->tag is copied into the SRP_CRED_RSP and sent back, so those bytes reach the target. SRP_AER_REQ behaves the same way and also reads req->lun. The leak is 8 bytes per response. max_ti_iu_len also decides which slab cache the buffer comes from. With 8 the buffer is a kmalloc-8 object and the read is entirely outside it: BUG: KASAN: slab-out-of-bounds in srp_recv_done+0x172b/0x1aa0 Read of size 8 at addr ffff888104714da8 by task kworker/u8:3/50 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes to the right of allocated 8-byte region [ffff888104714da0, ffff888104714da8) Without KASAN the returned bytes are whatever is next in the slab. One run returned ".strtab". rsp->data[3] in srp_process_rsp() has the same problem: only resp_data_len is checked before it is read. Drop a request that is shorter than the structure being parsed, and check byte_len before the tsk_mgmt read.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Sep 17, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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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

    • 2.6.37affected
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before 3f7fdf561f1ec3b523c39708df00bd808671668daffected · git
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before 138eb2f0ef02adfe6ad126afad5b54c56b5046eeaffected · git
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before 3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7affected · git
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before 0e7ba617514902501514d577647d866e670dad90affected · git
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before 001adf2fe87d1ab677c014a97467bbea5153ae5faffected · git
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before dc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cdaffected · git
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before fa1b33fdab3e79dce83721ead3220200a2dbec22affected · git
    • bb12588a38e6db85e01dceadff7bc161fc92e7d2 and later · before 961ac0f0c5e414abdd6b33fae84b311d9fde0bd0affected · git
    • before 2.6.37not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxall versions—
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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    40Plan

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 Linux001adf2fe87d1ab677c014a97467bbea5153ae5fVendor (CNA)
Linux Linux0e7ba617514902501514d577647d866e670dad90Vendor (CNA)
Linux Linux138eb2f0ef02adfe6ad126afad5b54c56b5046eeVendor (CNA)
Linux Linux3787f4c3e0d813d6c56be9f6dfaf66f8551fb0a7Vendor (CNA)
Linux Linux3f7fdf561f1ec3b523c39708df00bd808671668dVendor (CNA)
Linux Linux961ac0f0c5e414abdd6b33fae84b311d9fde0bd0Vendor (CNA)
Linux Linuxdc2272c00d7c00ee2a69b57f7ca9caaefcbdb8cdVendor (CNA)
Linux Linuxfa1b33fdab3e79dce83721ead3220200a2dbec22Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package 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.

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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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✗ → ✓

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References

Show all references (7 more)

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

All records