CVE-2024-26766

mediumpriority · track · 22OT risk · elevatedEPSS 0.003 · 19 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.27% (19th) EPSS

CVSS 5.5 · medium

Is it mine?

102 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix sdma.h tx->num_descs off-by-one error Unfortunately the commit `fd8958efe877` introduced another error causing the `descs` array to overflow. This reults in further crashes easily reproducible by `sendmsg` system call. [ 1080.836473] general protection fault, probably for non-canonical address 0x400300015528b00a: 0000 [#1] PREEMPT SMP PTI [ 1080.869326] RIP: 0010:hfi1_ipoib_build_ib_tx_headers.constprop.0+0xe1/0x2b0 [hfi1] -- [ 1080.974535] Call Trace: [ 1080.976990] <TASK> [ 1081.021929] hfi1_ipoib_send_dma_common+0x7a/0x2e0 [hfi1] [ 1081.027364] hfi1_ipoib_send_dma_list+0x62/0x270 [hfi1] [ 1081.032633] hfi1_ipoib_send+0x112/0x300 [hfi1] [ 1081.042001] ipoib_start_xmit+0x2a9/0x2d0 [ib_ipoib] [ 1081.046978] dev_hard_start_xmit+0xc4/0x210 -- [ 1081.148347] __sys_sendmsg+0x59/0xa0 crash> ipoib_txreq 0xffff9cfeba229f00 struct ipoib_txreq { txreq = { list = { next = 0xffff9cfeba229f00, prev = 0xffff9cfeba229f00 }, descp = 0xffff9cfeba229f40, coalesce_buf = 0x0, wait = 0xffff9cfea4e69a48, complete = 0xffffffffc0fe0760 <hfi1_ipoib_sdma_complete>, packet_len = 0x46d, tlen = 0x0, num_desc = 0x0, desc_limit = 0x6, next_descq_idx = 0x45c, coalesce_idx = 0x0, flags = 0x0, descs = {{ qw = {0x8024000120dffb00, 0x4} # SDMA_DESC0_FIRST_DESC_FLAG (bit 63) }, { qw = { 0x3800014231b108, 0x4} }, { qw = { 0x310000e4ee0fcf0, 0x8} }, { qw = { 0x3000012e9f8000, 0x8} }, { qw = { 0x59000dfb9d0000, 0x8} }, { qw = { 0x78000e02e40000, 0x8} }} }, sdma_hdr = 0x400300015528b000, <<< invalid pointer in the tx request structure sdma_status = 0x0, SDMA_DESC0_LAST_DESC_FLAG (bit 62) complete = 0x0, priv = 0x0, txq = 0xffff9cfea4e69880, skb = 0xffff9d099809f400 } If an SDMA send consists of exactly 6 descriptors and requires dword padding (in the 7th descriptor), the sdma_txreq descriptor array is not properly expanded and the packet will overflow into the container structure. This results in a panic when the send completion runs. The exact panic varies depending on what elements of the container structure get corrupted. The fix is to use the correct expression in _pad_sdma_tx_descs() to test the need to expand the descriptor array. With this patch the crashes are no longer reproducible and the machine is stable.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedbpftool-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-abi-stablelists-0:4.18.0-553.100.1.el8_10.noarch as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-core-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-cross-headers-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-core-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-devel-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-modules-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-debug-modules-extra-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-devel-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-doc-0:4.18.0-553.100.1.el8_10.noarch as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-headers-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-modules-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-modules-extra-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-tools-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-tools-libs-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedkernel-tools-libs-devel-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedperf-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedpython3-perf-0:4.18.0-553.100.1.el8_10.x86_64 as component of SUSE Liberty Linux 8suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.1–7.8

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 1.8 · impact 5.9

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · SUSE Product Security

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-193USprimaryCWE-193USCWE-311USCWE-311US

affected products (102)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Broadcom Brocade SANnavall versionscert_bundDEcpe:/a:broadcom:brocade_sannav:-
Broadcom Fabric OSall versionscert_bundDEcpe:/o:broadcom:fabric_operating_system:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell NetWorkerall versionscert_bundDEcpe:/a:dell:networker:-
Dell NetWorker <19.11all versionscert_bundDE
EMC Avamarall versionscert_bundDEcpe:/a:emc:avamar:-
IBM Business Automation Workflow 24.0.0all versionscert_bundDEcpe:/a:ibm:business_automation_workflow:24.0.0
IBM DB2 on Cloud Pak for Dataall versionscert_bundDEcpe:/a:ibm:db2:on_cloud_pak_for_data
IBM InfoSphere Guardiumall versionscert_bundDEcpe:/a:ibm:infosphere_guardium:-
IBM QRadar SIEM <7.5.0 UP10 IF01all versionscert_bundDE
IBM Security Guardium 12.0all versionscert_bundDEcpe:/a:ibm:security_guardium:12.0
IBM Spectrum Protect Plus <10.1.16.3all versionscert_bundDE
IBM Spectrum Protect Plus <10.1.17all versionscert_bundDE
IBM Spectrum Protect Plus <10.1.6.4all versionscert_bundDE
IBM Storage Scale System <6.1.9.7all versionscert_bundDE
IBM Storage Scale System <6.2.3.0all versionscert_bundDE
Juniper Junos Space <24.1R2all versionscert_bundDE
NetApp AFFall versionscert_bundDEcpe:/h:netapp:aff:-
NetApp FASall versionscert_bundDEcpe:/h:netapp:fas:-

showing 20 of 102

advisories (5)

Vendor and ecosystem advisories describing this.

RHSA-2026:1662security update for kernel2026-02-02csaf · suse_csafDE
security update for kernel
SSA-613116SSA-613116: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.12025-08-12csaf · siemens_psirtDE
SINEC OS before V3.1 contains third-party components with multiple vulnerabilities. Siemens has released new versions for the affected products and recommends to update to the latest versions.
WID-SEC-W-2024-0773Linux Kernel: Mehrere SchwachstellenDeutsch2024-04-03csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen, seine Privilegien eskalieren oder einen nicht näher spezifizierten Angriff durchzuführen.
WID-SEC-W-2026-0783IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2026-03-18csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um beliebigen Programmcode auszuführen, um Informationen offenzulegen, um einen Denial of Service Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen, und um Dateien zu manipulieren.
ICSA-25-226-15Siemens SINEC OS2025-08-12icsa · cisa_csaf_otUS
SINEC OS before V3.1 contains third-party components with multiple vulnerabilities. Siemens has released new versions for the affected products and recommends to update to the latest versions.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund suse_csaf siemens_psirt cisa_csaf_ot NVD CVE.org MITRE

published 2024-04-03modified 2026-08-04

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+326 more

references (28)

External citations — patches, advisories, analysis.

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