🛡️ CVE-2026-43493 on Ubuntu — linux
⚪ Unknown
✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - Fix handling of MAY_BACKLOG requests MAY_BACKLOG requests can return EBUSY. Handle them by checking for that value and filtering out EINPROGRESS notifications.
Distribution advisory
This page covers CVE-2026-43493 as tracked by Ubuntu, for the package linux. The fix is available in version 7.0.0-27.27; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
Affected software
UBUNTU-CVE-2026-43493 is recorded against 160 packages.
- linux (fixed in 7.0.0-27.27)
- linux-allwinner-5.19
- linux-aws (fixed in 7.0.0-1008.8)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1111.118~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.4
- linux-aws-5.8
- linux-aws-6.14
- linux-aws-6.17 (fixed in 6.17.0-1019.19~24.04.1)
- linux-aws-6.2
- linux-aws-6.5
- linux-aws-6.8 (fixed in 6.8.0-1060.63~22.04.1)
- linux-aws-fips (fixed in 6.8.0-1060.63+fips1)
- linux-aws-hwe
- linux-azure (fixed in 7.0.0-1010.10)
- linux-azure-4.15
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1116.125~20.04.1)
- linux-azure-5.19
Show the remaining 136 packages
- linux-azure-5.3
- linux-azure-5.4
- linux-azure-5.8
- linux-azure-6.11
- linux-azure-6.14
- linux-azure-6.17 (fixed in 6.17.0-1021.21~24.04.1)
- linux-azure-6.2
- linux-azure-6.5
- linux-azure-6.8 (fixed in 6.8.0-1063.71~22.04.1)
- linux-azure-edge
- linux-azure-fde (fixed in 7.0.0-1009.9)
- linux-azure-fde-5.15 (fixed in 5.15.0-1116.125~20.04.1)
- linux-azure-fde-5.19
- linux-azure-fde-6.14
- linux-azure-fde-6.17
- linux-azure-fde-6.2
- linux-azure-fde-6.8 (fixed in 6.8.0-1062.69~22.04.1)
- linux-azure-fips (fixed in 6.8.0-1062.69+fips1)
- linux-azure-nvidia
- linux-azure-nvidia-6.14
- linux-bluefield
- linux-fips (fixed in 6.8.0-134.134+fips1)
- linux-gcp (fixed in 7.0.0-1007.7)
- linux-gcp-4.15
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1111.121~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.4
- linux-gcp-5.8
- linux-gcp-6.11
- linux-gcp-6.14
- linux-gcp-6.17 (fixed in 6.17.0-1020.22~24.04.1)
- linux-gcp-6.2
- linux-gcp-6.5
- linux-gcp-6.8 (fixed in 6.8.0-1063.69~22.04.1)
- linux-gcp-fips (fixed in 6.8.0-1063.69+fips1)
- linux-gke (fixed in 6.8.0-1058.64)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 6.8.0-1045.48)
- linux-gkeop-5.15
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-185.195~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.4
- linux-hwe-5.8
- linux-hwe-6.11
- linux-hwe-6.14
- linux-hwe-6.17 (fixed in 6.17.0-40.40~24.04.1)
- linux-hwe-6.2
- linux-hwe-6.5
- linux-hwe-6.8 (fixed in 6.8.0-136.136~22.04.1)
- linux-hwe-7.0 (fixed in 7.0.0-28.28~24.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 7.0.0-1009.9)
- linux-ibm-5.15 (fixed in 5.15.0-1105.109~20.04.1)
- linux-ibm-5.4
- linux-ibm-6.8 (fixed in 6.8.0-1060.61~22.04.1)
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1103.105)
- linux-intel-iotg (fixed in 5.15.0-1106.112)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1106.112~20.04.1)
- linux-iot
- linux-kvm (fixed in 5.15.0-1103.108)
- linux-lowlatency (fixed in 6.8.0-134.134.1)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-183.193~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.11
- linux-lowlatency-hwe-6.2
- linux-lowlatency-hwe-6.5
- linux-lowlatency-hwe-6.8 (fixed in 6.8.0-134.134.1~22.04.1)
- linux-lts-xenial
- linux-nvidia (fixed in 7.0.0-1013.13)
- linux-nvidia-6.11
- linux-nvidia-6.17 (fixed in 6.17.0-1026.26)
- linux-nvidia-6.2
- linux-nvidia-6.5
- linux-nvidia-6.8 (fixed in 6.8.0-1058.61~22.04.1)
- linux-nvidia-lowlatency (fixed in 6.8.0-1058.61.1)
- linux-nvidia-tegra (fixed in 6.8.0-1029.30)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1063.63~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1052.52)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14
- linux-oem-5.17
- linux-oem-5.6
- linux-oem-6.0
- linux-oem-6.1
- linux-oem-6.11
- linux-oem-6.14
- linux-oem-6.17 (fixed in 6.17.0-1028.28)
- linux-oem-6.5
- linux-oem-6.8
- linux-oem-7.0 (fixed in 7.0.0-1008.8)
- linux-oracle (fixed in 7.0.0-1007.7)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1108.114~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4
- linux-oracle-5.8
- linux-oracle-6.14
- linux-oracle-6.17 (fixed in 6.17.0-1018.18~24.04.1)
- linux-oracle-6.5
- linux-oracle-6.8 (fixed in 6.8.0-1057.58~22.04.1)
- linux-raspi (fixed in 7.0.0-1014.14)
- linux-raspi-5.4
- linux-raspi-realtime (fixed in 6.8.0-2049.50)
- linux-raspi2
- linux-realtime (fixed in 7.0.0-27.27.1)
- linux-realtime-6.14
- linux-realtime-6.17 (fixed in 6.17.0-1017.19~24.04.1)
- linux-realtime-6.8 (fixed in 6.8.1-1055.56~22.04.1)
- linux-riscv (fixed in 7.0.0-27.27.1)
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1105.109~20.04.1)
- linux-riscv-5.19
- linux-riscv-5.8
- linux-riscv-6.14
- linux-riscv-6.17
- linux-riscv-6.5
- linux-riscv-6.8 (fixed in 6.8.0-134.134~22.04.1)
- linux-starfive-5.19
- linux-starfive-6.2
- linux-starfive-6.5
- linux-xilinx (fixed in 6.8.0-1032.33)
- linux-xilinx-zynqmp (fixed in 5.15.0-1074.78)
Timeline and source
Published on 19 May 2026 and last revised on 11 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
CVE-2026-43493 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
Severity
Unknown
CVSS Score
N/A
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
N/A
Public Exploit
✅ No
Source
OSV
Published
2026-05-19
Updated
2026-08-12
Modified
2026-08-11
Fix URL
N/A
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 7.0.0-27.27 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 7.0.0-1008.8 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1111.118~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.14 | — | — |
| linux-aws-6.17 | — | 6.17.0-1019.19~24.04.1 |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1060.63~22.04.1 |
| linux-aws-fips | — | 6.8.0-1060.63+fips1 |
| linux-aws-hwe | — | — |
| linux-azure | — | 7.0.0-1010.10 |
| linux-azure-4.15 | — | — |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1116.125~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.11 | — | — |
| linux-azure-6.14 | — | — |
| linux-azure-6.17 | — | 6.17.0-1021.21~24.04.1 |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1063.71~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 7.0.0-1009.9 |
| linux-azure-fde-5.15 | — | 5.15.0-1116.125~20.04.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.14 | — | — |
| linux-azure-fde-6.17 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fde-6.8 | — | 6.8.0-1062.69~22.04.1 |
| linux-azure-fips | — | 6.8.0-1062.69+fips1 |
| linux-azure-nvidia | — | — |
| linux-azure-nvidia-6.14 | — | — |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-134.134+fips1 |
| linux-gcp | — | 7.0.0-1007.7 |
| linux-gcp-4.15 | — | — |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1111.121~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.11 | — | — |
| linux-gcp-6.14 | — | — |
| linux-gcp-6.17 | — | 6.17.0-1020.22~24.04.1 |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1063.69~22.04.1 |
| linux-gcp-fips | — | 6.8.0-1063.69+fips1 |
| linux-gke | — | 6.8.0-1058.64 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 6.8.0-1045.48 |
| linux-gkeop-5.15 | — | — |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-185.195~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.11 | — | — |
| linux-hwe-6.14 | — | — |
| linux-hwe-6.17 | — | 6.17.0-40.40~24.04.1 |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-136.136~22.04.1 |
| linux-hwe-7.0 | — | 7.0.0-28.28~24.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 7.0.0-1009.9 |
| linux-ibm-5.15 | — | 5.15.0-1105.109~20.04.1 |
| linux-ibm-5.4 | — | — |
| linux-ibm-6.8 | — | 6.8.0-1060.61~22.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1103.105 |
| linux-intel-iotg | — | 5.15.0-1106.112 |
| linux-intel-iotg-5.15 | — | 5.15.0-1106.112~20.04.1 |
| linux-iot | — | — |
| linux-kvm | — | 5.15.0-1103.108 |
| linux-lowlatency | — | 6.8.0-134.134.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-183.193~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.11 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lowlatency-hwe-6.8 | — | 6.8.0-134.134.1~22.04.1 |
| linux-lts-xenial | — | — |
| linux-nvidia | — | 7.0.0-1013.13 |
| linux-nvidia-6.11 | — | — |
| linux-nvidia-6.17 | — | 6.17.0-1026.26 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1058.61~22.04.1 |
| linux-nvidia-lowlatency | — | 6.8.0-1058.61.1 |
| linux-nvidia-tegra | — | 6.8.0-1029.30 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1063.63~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1052.52 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | — |
| linux-oem-6.11 | — | — |
| linux-oem-6.14 | — | — |
| linux-oem-6.17 | — | 6.17.0-1028.28 |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | — |
| linux-oem-7.0 | — | 7.0.0-1008.8 |
| linux-oracle | — | 7.0.0-1007.7 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1108.114~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | — |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.14 | — | — |
| linux-oracle-6.17 | — | 6.17.0-1018.18~24.04.1 |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1057.58~22.04.1 |
| linux-raspi | — | 7.0.0-1014.14 |
| linux-raspi-5.4 | — | — |
| linux-raspi-realtime | — | 6.8.0-2049.50 |
| linux-raspi2 | — | — |
| linux-realtime | — | 7.0.0-27.27.1 |
| linux-realtime-6.14 | — | — |
| linux-realtime-6.17 | — | 6.17.0-1017.19~24.04.1 |
| linux-realtime-6.8 | — | 6.8.1-1055.56~22.04.1 |
| linux-riscv | — | 7.0.0-27.27.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1105.109~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.14 | — | — |
| linux-riscv-6.17 | — | — |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-134.134~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx | — | 6.8.0-1032.33 |
| linux-xilinx-zynqmp | — | 5.15.0-1074.78 |
References
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Exploit Protection
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