7.8

CVE-2026-53133: linux

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-53133DEBIAN-CVE-2026-53133CGA-5pqf-j85h-92mq
Published 25-06-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-53133 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 191 · Related 191
MGASA-2026-0312OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1SUSE-SU-2026:22666-1

Showing 100 of 192. Use Open JSON for the complete list.

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix truncation for block sizes >= 4G When the iommu is used the linearization of the mapping can give a single block that is very large split across multiple SG entries. When __rdma_block_iter_next() reassembles the split SG entries it is overflowing the 32 bit stack values and computed the wrong DMA addresses for blocks after the truncation. Use the right types to hold DMA addresses.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu164 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-146.146 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1066.69 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard7 products
  • linux-azure-6.18< 6.18.38-r0
  • linux-gcp-6.18< 6.18.38-r0
  • linux-gcp-6.18-bootc-boot-installed< 6.18.38-r0
  • linux-qemu-6.18< 6.18.38-r0
  • linux-qemu-6.18-bootc-boot-installed< 6.18.38-r0
Linux2 products
  • linux≥ a808273a495c657e33281b181fd7fcc2bb28f662, < 2ff4b7817e5b78070c30f5fb5e678e452a2628b3 | ≥ a808273a495c657e33281b181fd7fcc2bb28f662, < dee2a49adeeb2a5e16a3fc858fa21b841c519802 | ≥ a808273a495c657e33281b181fd7fcc2bb28f662, < cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f | ≥ a808273a495c657e33281b181fd7fcc2bb28f662, < 8fe0231adebe086c8a459c790944ac026cd99c6e | ≥ a808273a495c657e33281b181fd7fcc2bb28f662, < baf8685bcf56dc1efb44b8f6a57c42516e549068 | ≥ a808273a495c657e33281b181fd7fcc2bb28f662, < afd35fec9297195b759078745549c2671223f24f | ≥ a808273a495c657e33281b181fd7fcc2bb28f662, < ac1aad8e1281534ce936c250f68084fc79c5469e | ≥ a808273a495c657e33281b181fd7fcc2bb28f662, < 15fe76e23615f502d051ef0768f86babaf08746c | 5.2
  • linux_kernel≥ 5.2, < 5.10.259 | ≥ 5.11, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.94 | ≥ 6.13, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6 | 7.1:rc7
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.13-1

4 vendors · 174 products

References

39 links
Show all 39 references