CVE-2026-64018net: mana: validate rx_req_idx to prevent out-of-bounds array access
- 9.3CriticalCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 96% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-bounds array access In mana_hwc_rx_event_handler(), rx_req_idx is derived from sge->address in DMA-coherent memory. In Confidential VMs (SEV-SNP/TDX), this memory is shared unencrypted and HW can modify WQE contents at any time. No bounds check exists on rx_req_idx, which can lead to an out-of-bounds access into reqs[]. Add bounds check on rx_req_idx in mana_hwc_rx_event_handler() before using it to index the reqs[] array.
Timeline
ID reserved
By Linux
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 96% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.
Affected products
- affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f – < 5ddc715324badd7f2641bc177db1d027b402adae
- affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f – < ff1d5af207bcea857d45fe81505f1bc4b29eaef0
- affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f – < 01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01
- affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f – < 763a372d344fb12fae566d36ddb46e92454ad58c
- affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f – < fa627a5eaa83fc0261f44ef3769693b886ca6e27
- affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f – < 355e9f2b2a7887ca38100127989af3e422ba71d0
- affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f – < b809d0409991b75a6cff846a5ac27c3062953f84
- affected 5.13
- unaffected < 5.13
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.142 – ≤ 6.6.*
- unaffected 6.12.92 – ≤ 6.12.*
- unaffected 6.18.34 – ≤ 6.18.*
- unaffected 7.0.11 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References7
- https://git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adae (opens in a new tab)
- https://git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0 (opens in a new tab)
- https://git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01 (opens in a new tab)
- https://git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58c (opens in a new tab)
- https://git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27 (opens in a new tab)
- https://git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0 (opens in a new tab)
- https://git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45591 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64018)Record last updated .