01 Record
CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing
HighKEVPUBLISHEDCNA: 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
02 Description
net: skbuff: preserve shared-frag marker during coalescing
03 Exploitation and scoring
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-10-28. Federal remediation due 2026-10-31.
- SSVC decision
- ExploitationactiveCISA reports credible evidence of active exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 10.19% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 95.6% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (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:H/I:H/A:H
- NVD analysis status
- Undergoing Analysis. NVD last modified this record on 2026-10-28.
- Red Hat severity
- Important. 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
- 2026-05-23 11:44Z5 MO AGO
- Last updated
- 2026-10-28 19:59Z7 HR AGO
- Reserved
- 2026-05-13
- 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
- Data version
- 5.2
- Document digest
- 3246ea77e2e3a53ac2183c2de21781b94fc5c3336f933af2ca727a68075ae78f
05 Affected products
VendorProductVersionsPlatforms
LinuxLinuxcef401de7be8c4e155c6746bfccf721a4fa5fab9 to < 3599e6b3cc1ada96883d496a50a210d3afbb6987, cef401de7be8c4e155c6746bfccf721a4fa5fab9 to < 2f2b16022a2e10ca7bccfb98db5ed2ec0f72641c, cef401de7be8c4e155c6746bfccf721a4fa5fab9 to < 9d3e5fd19fe1063bf607219e8562fbd567b8e8d5, cef401de7be8c4e155c6746bfccf721a4fa5fab9 to < 78bf6b6bb19541d19fbda6242e7cfe2c682763c0, cef401de7be8c4e155c6746bfccf721a4fa5fab9 to < 760e1addc27ba1a7beb4a0a7e8b3e9ec49e7a34e, cef401de7be8c4e155c6746bfccf721a4fa5fab9 to < 3bd9e113d50034db99d7ef69fd8e5242d15e414a, cef401de7be8c4e155c6746bfccf721a4fa5fab9 to < 3884358a9286b17f389a72b1426fc4547c23c111, cef401de7be8c4e155c6746bfccf721a4fa5fab9 to < f84eca5817390257cef78013d0112481c503b4a3, 3.9—
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/3599e6b3cc1ada96883d496a50a210d3afbb6987
- git.kernel.orghttps://git.kernel.org/stable/c/2f2b16022a2e10ca7bccfb98db5ed2ec0f72641c
- git.kernel.orghttps://git.kernel.org/stable/c/9d3e5fd19fe1063bf607219e8562fbd567b8e8d5
- git.kernel.orghttps://git.kernel.org/stable/c/78bf6b6bb19541d19fbda6242e7cfe2c682763c0
- git.kernel.orghttps://git.kernel.org/stable/c/760e1addc27ba1a7beb4a0a7e8b3e9ec49e7a34e
- git.kernel.orghttps://git.kernel.org/stable/c/3bd9e113d50034db99d7ef69fd8e5242d15e414a
- git.kernel.orghttps://git.kernel.org/stable/c/3884358a9286b17f389a72b1426fc4547c23c111
- git.kernel.orghttps://git.kernel.org/stable/c/f84eca5817390257cef78013d0112481c503b4a3
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/13/5
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/21/11
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/21/12
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/21/13
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-46300
- bugzilla.redhat.comRHBZ#2477015https://bugzilla.redhat.com/show_bug.cgi?id=2477015
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46300.json
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19540
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:33486
- access.redhat.comhttps://access.redhat.com/errata/RHBA-2026:20032
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:21695
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:21690
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:28887
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23233
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20087
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:25044
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:34098
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:21656
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23245
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:21702
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23240
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20299
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19569
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19705
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20593
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20054
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20129
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19568
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19666
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23470
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20130
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:20051
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19521
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23471
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23469
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24814
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23468
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19664
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19711
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19875
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-46300
07 Fixed in
Debian 12
- linux Fixed in 6.1.174-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.12.90-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 7.0.9-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-hwe-edge No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-azure No fix yet
- linux-azure-5.3 No fix yet
- linux-azure-edge No fix yet
- linux-gcp No fix yet
- linux-gcp-5.3 No fix yet
- linux-gke-4.15 No fix yet
- linux-gke-5.4 No fix yet
- linux-gkeop-5.4 No fix yet
- linux-hwe No fix yet
- linux-hwe-edge No fix yet
- linux-oem No fix yet
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.8 No fix yet
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop No fix yet
- linux-gkeop-5.15 No fix yet
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.8 No fix yet
- linux-intel-5.13 No fix yet
- linux-oem-5.10 No fix yet
- linux-oem-5.13 No fix yet
- linux-oem-5.14 No fix yet
- linux-oem-5.6 No fix yet
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.8 No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
- linux-riscv-5.11 No fix yet
- linux-riscv-5.8 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux Fixed in 5.15.0-181.191
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1109.116
- linux-aws-5.19 No fix yet
- linux-aws-6.2 No fix yet
- linux-aws-6.5 No fix yet
- linux-aws-6.8 Fixed in 6.8.0-1057.60~22.04.1
- linux-azure Fixed in 5.15.0-1114.123
- linux-azure-5.19 No fix yet
- linux-azure-6.2 No fix yet
- linux-azure-6.5 No fix yet
- linux-azure-6.8 Fixed in 6.8.0-1059.65~22.04.1
- linux-azure-fde Fixed in 5.15.0-1114.123
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-azure-fde-6.8 Fixed in 6.8.0-1058.65~22.04.1
- linux-gcp Fixed in 5.15.0-1109.118
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 No fix yet
- linux-gcp-6.5 No fix yet
- linux-gcp-6.8 Fixed in 6.8.0-1060.63~22.04.1
- linux-gke Fixed in 5.15.0-1105.111
- linux-gkeop Fixed in 5.15.0-1092.100
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 No fix yet
- linux-hwe-6.8 Fixed in 6.8.0-124.124~22.04.1
- linux-ibm Fixed in 5.15.0-1103.106
- linux-ibm-6.8 Fixed in 6.8.0-1057.58~22.04.1
- linux-intel-iot-realtime No fix yet
- linux-intel-iotg Fixed in 5.15.0-1104.110
- linux-kvm Fixed in 5.15.0-1101.106
- linux-lowlatency Fixed in 5.15.0-181.191
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 No fix yet
- linux-lowlatency-hwe-6.5 No fix yet
- linux-lowlatency-hwe-6.8 Fixed in 6.8.0-134.134.1~22.04.1
- linux-nvidia Fixed in 5.15.0-1104.105
- linux-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
20 further packages in Ubuntu 22.04 LTS not shown (first 40 listed).
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux Fixed in 6.8.0-124.124
- linux-aws Fixed in 6.8.0-1057.60
- linux-aws-6.14 No fix yet
- linux-aws-6.17 Fixed in 6.17.0-1017.17~24.04.1
- linux-azure Fixed in 6.8.0-1058.64
- linux-azure-6.11 No fix yet
- linux-azure-6.14 No fix yet
- linux-azure-6.17 Fixed in 6.17.0-1017.17~24.04.1
- linux-azure-fde Fixed in 6.8.0-1058.65
- linux-azure-fde-6.14 No fix yet
- linux-azure-nvidia No fix yet
- linux-azure-nvidia-6.14 No fix yet
- linux-gcp Fixed in 6.8.0-1060.63
- linux-gcp-6.11 No fix yet
- linux-gcp-6.14 No fix yet
- linux-gcp-6.17 Fixed in 6.17.0-1018.19~24.04.1
- linux-gke Fixed in 6.8.0-1055.61
- linux-gkeop Fixed in 6.8.0-1042.45
- linux-hwe-6.11 No fix yet
- linux-hwe-6.14 No fix yet
- linux-hwe-6.17 Fixed in 6.17.0-35.35~24.04.1
- linux-hwe-7.0 Fixed in 7.0.0-28.28~24.04.1
- linux-ibm Fixed in 6.8.0-1057.58
- linux-lowlatency Fixed in 6.8.0-134.134.1
- linux-lowlatency-hwe-6.11 No fix yet
- linux-nvidia Fixed in 6.8.0-1055.58
- linux-nvidia-6.11 No fix yet
- linux-nvidia-6.17 Fixed in 6.17.0-1021.21
- linux-nvidia-lowlatency Fixed in 6.8.0-1055.58.1
- linux-nvidia-tegra Fixed in 6.8.0-1026.26
- linux-oem-6.11 No fix yet
- linux-oem-6.14 No fix yet
- linux-oem-6.17 Fixed in 6.17.0-1024.24
- linux-oem-6.8 No fix yet
- linux-oracle Fixed in 6.8.0-1054.55
- linux-oracle-6.14 No fix yet
- linux-oracle-6.17 Fixed in 6.17.0-1016.16~24.04.1
- linux-raspi Fixed in 6.8.0-1057.61
- linux-raspi-realtime No fix yet
- linux-realtime No fix yet
4 further packages in Ubuntu 24.04 LTS not shown (first 40 listed).
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- linux Fixed in 6.17.0-35.35
- linux-aws Fixed in 6.17.0-1017.17
- linux-azure Fixed in 6.17.0-1017.17
- linux-azure-fde No fix yet
- linux-gcp Fixed in 6.17.0-1018.19
- linux-oracle Fixed in 6.17.0-1016.16
- linux-raspi Fixed in 6.17.0-1018.18
- linux-realtime Fixed in 6.17.0-1014.16
- linux-riscv Fixed in 6.17.0-35.35.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- linux Fixed in 7.0.0-22.22
- linux-aws Fixed in 7.0.0-1006.6
- linux-azure Fixed in 7.0.0-1007.7
- linux-azure-fde Fixed in 7.0.0-1006.6
- linux-gcp Fixed in 7.0.0-1005.5
- linux-ibm Fixed in 7.0.0-1007.7
- linux-nvidia Fixed in 7.0.0-1009.9
- linux-oem-7.0 Fixed in 7.0.0-1008.8
- linux-oracle Fixed in 7.0.0-1005.5
- linux-raspi Fixed in 7.0.0-1011.11
- linux-realtime Fixed in 7.0.0-22.22.1
- linux-riscv Fixed in 7.0.0-22.22.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Nvidia-BlueField 22.04 LTS
- linux-bluefield Fixed in 5.15.0-1093.95
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Nvidia-BlueField 24.04 LTS
- linux-bluefield Fixed in 6.8.0-1023.27
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- linux-aws-5.15 Fixed in 5.15.0-1109.116~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-5.15 Fixed in 5.15.0-1114.123~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-5.15 Fixed in 5.15.0-1109.118~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe-5.15 Fixed in 5.15.0-181.191~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-ibm-5.15 Fixed in 5.15.0-1103.106~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-intel-iotg-5.15 Fixed in 5.15.0-1104.110~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-181.191~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1061.61~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle-5.15 Fixed in 5.15.0-1106.112~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-riscv-5.15 Fixed in 5.15.0-1103.107~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-preview 22.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 22.04 LTS
- linux-aws-fips Fixed in 5.15.0-1109.116+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.15.0-1114.123+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.15.0-181.191+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.15.0-1109.118+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 24.04 LTS
- linux-aws-fips Fixed in 6.8.0-1057.60+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 6.8.0-1059.65+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 6.8.0-124.124+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 6.8.0-1060.63+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 22.04 LTS
- linux-intel-iot-realtime Fixed in 5.15.0-1101.103Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1108.117Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime-6.8 Fixed in 6.8.1-1052.53~22.04.1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 24.04 LTS
- linux-raspi-realtime Fixed in 6.8.0-2046.47Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 6.8.1-1052.53Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime-6.14 No fix yet
- linux-realtime-6.17 Fixed in 6.17.0-1014.16~24.04.1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.