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CVE

CVE-2026-64018

net: mana: validate rx_req_idx to prevent out-of-bounds array access
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CVE

CVE-2026-64018

net: mana: validate rx_req_idx to prevent out-of-bounds array access

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

net: mana: validate rxreqidx to prevent out-of-bounds array access

In manahwcrxeventhandler(), rxreqidx 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 rxreqidx,

which can lead to an out-of-bounds access into reqs[].

Add bounds check on rxreqidx in manahwcrxeventhandler() before

using it to index the reqs[] array.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01, https://git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0, https://git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adae, https://git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58c, https://git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84, https://git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27, https://git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64018.json, https://nvd.nist.gov/vuln/detail/CVE-2026-64018, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.3

CVSS Score
0
10

Basic Information

Base CVSS
9.3
EPSS Probability
0.00142%
EPSS Percentile
0.03769%
Introduced Version
ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f,5.13.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
b809d0409991b75a6cff846a5ac27c3062953f84,5.15.209,6.1.175,6.6.142,6.12.92,6.18.34,7.0.11,0:4.18.0-553.159.1.el8_10,0:4.18.0-553.159.1.rt7.500.el8_10,6.1.176-1,6.12.94-1,5.15.0-1112.119~20.04.1,5.15.0-1117.126~20.04.1,5.15.0-1117.126~20.04.2,5.15.0-1112.122~20.04.1,5.15.0-186.196~20.04.1,5.15.0-1106.110~20.04.1,5.15.0-1107.113~20.04.1,5.15.0-184.194~20.04.1,5.15.0-1064.66~20.04.1,5.15.0-1109.115~20.04.1,6.8.0-1063.71,6.17.0-1021.21~24.04.1,6.8.0-1062.69,7.0.0-28.28~24.04.1,7.0.0-1016.16~24.04.1,7.0.0-28.28.1~24.04.3,5.15.0-186.196,5.15.0-1112.119,5.15.0-1117.126,6.8.0-1063.71~22.04.1,6.8.0-1062.69~22.04.1,5.15.0-1112.122,5.15.0-1108.114,5.15.0-1095.103,5.15.0-1106.110,5.15.0-1107.113,5.15.0-1104.109,5.15.0-184.194,5.15.0-1107.108,5.15.0-1064.66,5.15.0-1053.53,5.15.0-1109.115,5.15.0-1075.79,0:5.15.0-323.211.3.3.el8uek,0:5.15.0-323.211.3.3.el9uek,0:6.12.0-211.50.1.el10_2

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