CVE-2026-74435

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc

rxrpc_recvmsg_data() calls rxrpc_verify_data() whenever the rxrpc_call.rx_dec_buffer is unallocated and assumes that upon successful return that rx_dec_buffer must be allocated. However, rxrpc_verify_data() does not request an allocation if the rxrpc_skb_priv.len is zero.

In addition, failure to allocate rx_dec_buffer will result in a call to skb_copy_bits() with a NULL destination which can trigger a NULL pointer dereference.

To prevent these issues rxrpc_verify_data() is modified to always attempt to allocate the rxrpc_call.rx_dec_buffer if it is NULL.

This issue was identified with assistance of a private sashiko instance.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (5)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d3b642cf95d48234590cc91450d8705a9bf6b540
generic

rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a962bc8508592c4d51092edac68579bd8b18fe44
generic

rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8bbede0afced346b24e4fbde0c68cf12980ba948
generic

rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6563b4eb38c35d75892445bcf8aacdc29914821c
generic

rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/16c8ae9735c5bd7e54dd7478d6348e0fc860842d

Vendor Advisories for CVE-2026-74435(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 30× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 01:32 UTCEG score recompute
  2. 2026-08-21 01:32 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:35 UTCGHSA enrichment
  5. 2026-08-19 23:37 UTCEG score recompute
  6. 2026-08-19 23:37 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 10:38 UTCGHSA enrichment
  9. 2026-08-18 21:37 UTCEG score recompute
  10. 2026-08-18 21:37 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 08:22 UTCGHSA enrichment
  14. 2026-08-17 19:24 UTCEG score recompute
  15. 2026-08-17 19:23 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 06:25 UTCEG score recompute
  18. 2026-08-17 06:25 UTCGHSA enrichment
  19. 2026-08-17 05:55 UTCEG score recompute▲ 7.50
  20. 2026-08-17 05:55 UTCGHSA enrichment
  21. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  22. 2026-08-17 05:25 UTCEG score recompute
  23. 2026-08-17 05:25 UTCGHSA enrichment
  24. 2026-08-17 05:24 UTCMITRE cvelistV5
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 5 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 02:15 UTCEPSS rescore
  3. 2026-08-15 06:23 UTCNVD update
  4. 2026-08-15 06:13 UTCEG score recompute
  5. 2026-08-15 06:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74435?
CVE-2026-74435 is a high vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: rxrpc: rxrpcverifydata ensure rxdecbuffer alloc rxrpcrecvmsgdata() calls rxrpcverifydata() whenever the rxrpccall.rxdec_buffer is unallocated and assumes that upon successful return that rxdecbuffer must be allocated. However,…
When was CVE-2026-74435 disclosed?
CVE-2026-74435 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74435 actively exploited?
CVE-2026-74435 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 71.7% of all scored CVEs.
What is the CVSS score of CVE-2026-74435?
CVE-2026-74435 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-74435?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74435, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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