01 Record

CVE-2024-26766

IB/hfi1: Fix sdma.h tx->num_descs off-by-one error

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

IB/hfi1: Fix sdma.h tx->num_descs off-by-one error

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 18.5% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-04-03 17:00Z2 YR AGO

Last updated

2026-08-05 11:27Z1 MO AGO

Reserved

2024-02-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-193Off-by-one ErrorBase

Data version

5.2

Document digest

1ded4d17c72fd1f684f499b4cdf57224b9c48de2b94d6197b97d3da52d05e771

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd1c1ee052d25ca23735eea912f843bc7834781b4 to < 115b7f3bc1dce590a6851a2dcf23dc1100c49790, 40ac5cb6cbb01afa40881f78b4d2f559fb7065c4 to < 5833024a9856f454a964a198c63a57e59e07baf5, 6cf8f3d690bb5ad31ef0f41a6206ecf5a068d179 to < 3f38d22e645e2e994979426ea5a35186102ff3c2, bd57756a7e43c7127d0eca1fc5868e705fd0f7ba to < 47ae64df23ed1318e27bd9844e135a5e1c0e6e39, eeaf35f4e3b360162081de5e744cf32d6d1b0091 to < 52dc9a7a573dbf778625a0efca0fca55489f084b, fd8958efe8779d3db19c9124fce593ce681ac709 to < a2fef1d81becf4ff60e1a249477464eae3c3bc2a, fd8958efe8779d3db19c9124fce593ce681ac709 to < 9034a1bec35e9f725315a3bb6002ef39666114d9, fd8958efe8779d3db19c9124fce593ce681ac709 to < e6f57c6881916df39db7d95981a8ad2b9c3458d6, 0ef9594936d1f078e8599a1cf683b052df2bec00, 4.19.291 to < 4.19.308, 5.4.251 to < 5.4.270, 5.10.188 to < 5.10.211, 5.15.99 to < 5.15.150, 6.1.16 to < 6.1.80, 6.2.3 to < 6.3, 6.3—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/115b7f3bc1dce590a6851a2dcf23dc1100c49790
git.kernel.orghttps://git.kernel.org/stable/c/5833024a9856f454a964a198c63a57e59e07baf5
git.kernel.orghttps://git.kernel.org/stable/c/3f38d22e645e2e994979426ea5a35186102ff3c2
git.kernel.orghttps://git.kernel.org/stable/c/47ae64df23ed1318e27bd9844e135a5e1c0e6e39
git.kernel.orghttps://git.kernel.org/stable/c/52dc9a7a573dbf778625a0efca0fca55489f084b
git.kernel.orghttps://git.kernel.org/stable/c/a2fef1d81becf4ff60e1a249477464eae3c3bc2a
git.kernel.orghttps://git.kernel.org/stable/c/9034a1bec35e9f725315a3bb6002ef39666114d9
git.kernel.orghttps://git.kernel.org/stable/c/e6f57c6881916df39db7d95981a8ad2b9c3458d6
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

01 Record index

CVE-2024-26766

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2024-26766

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References