5.5

CVE-2026-43445: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-43445DEBIAN-CVE-2026-43445
Published 08-05-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-43445 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 40 · Related 40
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:22809-1SUSE-SU-2026:22810-1SUSE-SU-2026:22903-1SUSE-SU-2026:22904-1SUSE-SU-2026:23066-1

Timeline

  1. 08-05-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: e1000/e1000e: Fix leak in DMA error cleanup If an error is encountered while mapping TX buffers, the driver should unmap any buffers already mapped for that skb. Because count is incremented after a successful mapping, it will always match the correct number of unmappings needed when dma_error is reached. Decrementing count before the while loop in dma_error causes an off-by-one error. If any mapping was successful before an unsuccessful mapping, exactly one DMA mapping would leak. In these commits, a faulty while condition caused an infinite loop in dma_error: Commit 03b1320dfcee ("e1000e: remove use of skb_dma_map from e1000e driver") Commit 602c0554d7b0 ("e1000: remove use of skb_dma_map from e1000 driver") Commit c1fa347f20f1 ("e1000/e1000e/igb/igbvf/ixgb/ixgbe: Fix tests of unsigned in *_tx_map()") fixed the infinite loop, but introduced the off-by-one error. This issue may still exist in the igbvf driver, but I did not address it in this patch.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.04 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

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

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < 7eaeb778bfaa3b2a804f89321c234d59c74569db | ≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < 0606c24a745bafd1be5d66c48361638cd9cad74b | ≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < 519051c711dfd239ef6e4b28878efee400a035f9 | ≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < 0a1fc25deabab4efce64610e3c449485c4fa8f5f | ≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < fa5ba9867a55e640df0dc79bf0199770fb043f03 | ≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < 30e87ade8d678c25a8546cf38c0b498fa5cb27d3 | ≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < 10b5e65959e955a1c8894e0a5413944b5a70204a | ≥ c1fa347f20f17f14a4a1575727fa24340e8a9117, < e94eaef11142b01f77bf8ba4d0b59720b7858109 | 2.6.33
  • linux_kernel≥ 2.6.33.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.78 | ≥ 6.13, < 6.18.19 | ≥ 6.19, < 6.19.9 | 2.6.33 | 2.6.33:rc6 | 2.6.33:rc7 | 2.6.33:rc8 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.10-1

3 vendors · 160 products

References

39 links
Show all 39 references