CVE-2026-43134
published 2026-05-06CVE-2026-43134: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ This adds a check for…
PriorityP340high8.1CVSS 3.1
AVAACLPRNUINSUCHIHAN
EPSS
0.18%
7.3th percentile
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
This adds a check for encryption key size upon receiving
L2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which
expects L2CAP_CR_LE_BAD_KEY_SIZE.
Affected
44 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < 335071c0c3637064ec250481f589075db44fe4e6 | 335071c0c3637064ec250481f589075db44fe4e6 |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < fa6ad76fa8623c0a50d529cd5726fa5d819a3be4 | fa6ad76fa8623c0a50d529cd5726fa5d819a3be4 |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < 9118601ff90b79e8df3c0c98f48ae00c1b02ecef | 9118601ff90b79e8df3c0c98f48ae00c1b02ecef |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < 481ea39b342c347b6ac029f3d418486280be4e45 | 481ea39b342c347b6ac029f3d418486280be4e45 |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < ec91078e132179b04e0c3906b599816c056ceaad | ec91078e132179b04e0c3906b599816c056ceaad |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < 96581749c7c14fbec32c35728520867929600041 | 96581749c7c14fbec32c35728520867929600041 |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < 8dd43f9a9323f9c01bc8246da8d81a4c783c9e97 | 8dd43f9a9323f9c01bc8246da8d81a4c783c9e97 |
| linux | linux | >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d < 138d7eca445ef37a0333425d269ee59900ca1104 | 138d7eca445ef37a0333425d269ee59900ca1104 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 3.14 < 5.10.252 | 5.10.252 |
| 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 | >= 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 | — | — |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
vendor_ubuntu8.8HIGH
vendor_redhat7.0MEDIUM
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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: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
vendor_redhat·2026-05-06·CVSS 7.0
CVE-2026-43134 [MEDIUM] CWE-1284 kernel: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
kernel: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
A flaw was found in the Linux kernel's Bluetooth Low Energy (LE) Logical Link Control and Adaptation Protocol (L2CAP). A missing check for encryption key size when processing connection requests could allow a remote attacker to send a malformed request. This could lead to a protocol violation, potentially causing the system to enter an unexpected state or result in a denial of service.
Package: kernel (Red Hat Enterprise Linux 10) - Affected
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 affected
Package: kernel (Red Hat Enterprise Linux 8) - Affected
Package: kernel-rt (Red Hat Enter
GHSA
GHSA-jc53-6rw8-5w3x: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
This adds a c
ghsa_unreviewed·2026-05-06
CVE-2026-43134 GHSA-jc53-6rw8-5w3x: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
This adds a c
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
This adds a check for encryption key size upon receiving
L2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which
expects L2CAP_CR_LE_BAD_KEY_SIZE.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/138d7eca445ef37a0333425d269ee59900ca1104https://git.kernel.org/stable/c/335071c0c3637064ec250481f589075db44fe4e6https://git.kernel.org/stable/c/481ea39b342c347b6ac029f3d418486280be4e45https://git.kernel.org/stable/c/8dd43f9a9323f9c01bc8246da8d81a4c783c9e97https://git.kernel.org/stable/c/9118601ff90b79e8df3c0c98f48ae00c1b02ecefhttps://git.kernel.org/stable/c/96581749c7c14fbec32c35728520867929600041https://git.kernel.org/stable/c/ec91078e132179b04e0c3906b599816c056ceaadhttps://git.kernel.org/stable/c/fa6ad76fa8623c0a50d529cd5726fa5d819a3be4
2026-05-06
Published