CVE-2026-43296
published 2026-05-08CVE-2026-43296: In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Workaround SQM/PSE stalls by disabling sticky NIX SQ manager sticky mode is…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.39%
31.0th percentile
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
NIX SQ manager sticky mode is known to cause stalls when multiple SQs
share an SMQ and transmit concurrently. Additionally, PSE may deadlock
on transitions between sticky and non-sticky transmissions. There is
also a credit drop issue observed when certain condition clocks are
gated.
work around these hardware errata by:
- Disabling SQM sticky operation:
- Clear TM6 (bit 15)
- Clear TM11 (bit 14)
- Disabling sticky → non-sticky transition path that can deadlock PSE:
- Clear TM5 (bit 23)
- Preventing credit drops by keeping the control-flow clock enabled:
- Set TM9 (bit 21)
These changes are applied via NIX_AF_SQM_DBG_CTL_STATUS. With this
configuration the SQM/PSE maintain forward progress under load without
credit loss, at the cost of disabling sticky optimizations.
Affected
43 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < 9a3fd301329474f449e75f86d8a4f6b9c603fd6c | 9a3fd301329474f449e75f86d8a4f6b9c603fd6c |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < d0b3c8a80336029d9356f429151eb27922d80a3c | d0b3c8a80336029d9356f429151eb27922d80a3c |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < 36cc5a5e0178d5fb79e04173b8aa623b0108819a | 36cc5a5e0178d5fb79e04173b8aa623b0108819a |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < d9b549b6951ba178ec14339a031cae65f4e43fe1 | d9b549b6951ba178ec14339a031cae65f4e43fe1 |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < cec2ceb35ce7bc874c43812bb39200d6cf691b87 | cec2ceb35ce7bc874c43812bb39200d6cf691b87 |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < 8052d0587fb14b85539c3a14a226586c0c3d6b4c | 8052d0587fb14b85539c3a14a226586c0c3d6b4c |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < b7eba260a34e854e2487b8363c11976f082df00d | b7eba260a34e854e2487b8363c11976f082df00d |
| linux | linux | >= 5d9b976d4480dc0dcfa3719b645636d2f0f9f156 < 70e9a5760abfb6338d63994d4de6b0778ec795d6 | 70e9a5760abfb6338d63994d4de6b0778ec795d6 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 5.11 < 5.15.202 | 5.15.202 |
| linux | linux_kernel | >= 5.16 < 6.1.165 | 6.1.165 |
| linux | linux_kernel | >= 5.5 < 5.10.252 | 5.10.252 |
| linux | linux_kernel | >= 6.13 < 6.18.16 | 6.18.16 |
| linux | linux_kernel | >= 6.19 < 6.19.6 | 6.19.6 |
| linux | linux_kernel | >= 6.2 < 6.6.128 | 6.6.128 |
| linux | linux_kernel | >= 6.7 < 6.12.75 | 6.12.75 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-6.8 | — | — |
| ubuntu | linux-aws-fips | — | — |
| ubuntu | linux-azure-fips | — | — |
| ubuntu | linux-fips | — | — |
| ubuntu | linux-gcp | — | — |
| ubuntu | linux-gcp-6.8 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_ubuntu8.8HIGH
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Linux Kernel up to 6.19.5 octeontx2-af deadlock
vuldb·2026-05-18·CVSS 7.5
CVE-2026-43296 [HIGH] Linux Kernel up to 6.19.5 octeontx2-af deadlock
A vulnerability classified as critical was found in Linux Kernel up to 6.19.5. This vulnerability affects unknown code of the component octeontx2-af. Executing a manipulation can lead to deadlock.
This vulnerability appears as CVE-2026-43296. The attacker needs to be present on the local network. There is no available exploit.
Upgrading the affected component is advised.
GHSA
GHSA-7rmq-9hg9-v4q5: In the Linux kernel, the following vulnerability has been resolved:
octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
NIX SQ manager stick
ghsa_unreviewed·2026-05-08
CVE-2026-43296 GHSA-7rmq-9hg9-v4q5: In the Linux kernel, the following vulnerability has been resolved:
octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
NIX SQ manager stick
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
NIX SQ manager sticky mode is known to cause stalls when multiple SQs
share an SMQ and transmit concurrently. Additionally, PSE may deadlock
on transitions between sticky and non-sticky transmissions. There is
also a credit drop issue observed when certain condition clocks are
gated.
work around these hardware errata by:
- Disabling SQM sticky operation:
- Clear TM6 (bit 15)
- Clear TM11 (bit 14)
- Disabling sticky → non-sticky transition path that can deadlock PSE:
- Clear TM5 (bit 23)
- Preventing credit drops by keeping the control-flow clock enabled:
- Set TM9 (bit 21)
These changes are applied via NIX_AF_SQM_DBG_CTL_STATUS. With this
configuration the SQM
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2026-07-10
CVE-2025-71235 Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monito
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2026-07-09
CVE-2026-45960 Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardwar
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities
vendor_ubuntu·2026-07-06
CVE-2026-43314 Linux kernel (Raspberry Pi Real-time) vulnerabilities
Title: Linux kernel (Raspberry Pi Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-07-02
CVE-2026-43314 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring dr
Ubuntu
Linux kernel (Low Latency) vulnerabilities
vendor_ubuntu·2026-07-02·CVSS 8.8
CVE-2026-43314 [HIGH] Linux kernel (Low Latency) vulnerabilities
Title: Linux kernel (Low Latency) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a conta
Ubuntu
Linux kernel (Xilinx) vulnerabilities
vendor_ubuntu·2026-07-02·CVSS 7.8
CVE-2026-43314 [HIGH] Linux kernel (Xilinx) vulnerabilities
Title: Linux kernel (Xilinx) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
It was discovered that the Linux kernel did not properly handle shared page
fragments during socket buffer operations, collectively known as Dirty
Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the
RxRPC networking subsystem when processing paged fragments. A local
attacker could use this to escalate privileges, or possibly escape a
container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000)
Ubuntu
Linux kernel (NVIDIA Tegra) vulnerabilities
vendor_ubuntu·2026-07-02
CVE-2026-43314 Linux kernel (NVIDIA Tegra) vulnerabilities
Title: Linux kernel (NVIDIA Tegra) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardwar
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-07-01
CVE-2026-43226 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- ACPI drivers;
- ATM drivers;
- RNBD block device driver;
- Ublk userspace block driver;
- Bus devices;
- Character device driver;
- TPM device driver;
- Clock framework and drivers;
- Clocksource drivers;
- CPU idle management framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Hardware monitoring dr
Red Hat
kernel: octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
vendor_redhat·2026-05-08·CVSS 5.5
CVE-2026-43296 [MEDIUM] CWE-833 kernel: octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
kernel: octeontx2-af: Workaround SQM/PSE stalls by disabling sticky
A flaw was found in the Linux kernel's octeontx2-af driver. This vulnerability arises from issues within the NIX SQ (Send Queue) manager's sticky mode and the PSE (Packet Stream Engine), which can lead to system stalls, deadlocks, and credit drops. When multiple Send Queues share a Send Message Queue (SMQ) and transmit concurrently, or during transitions between sticky and non-sticky transmissions, a denial of service condition can occur, impacting system availability and performance.
Package: kernel (Red Hat Enterprise Linux 10) - Fix deferred
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not af
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/36cc5a5e0178d5fb79e04173b8aa623b0108819ahttps://git.kernel.org/stable/c/70e9a5760abfb6338d63994d4de6b0778ec795d6https://git.kernel.org/stable/c/8052d0587fb14b85539c3a14a226586c0c3d6b4chttps://git.kernel.org/stable/c/9a3fd301329474f449e75f86d8a4f6b9c603fd6chttps://git.kernel.org/stable/c/b7eba260a34e854e2487b8363c11976f082df00dhttps://git.kernel.org/stable/c/cec2ceb35ce7bc874c43812bb39200d6cf691b87https://git.kernel.org/stable/c/d0b3c8a80336029d9356f429151eb27922d80a3chttps://git.kernel.org/stable/c/d9b549b6951ba178ec14339a031cae65f4e43fe1
2026-05-08
Published