CVE-2026-43445

MEDIUM EPSS 2.4%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 14

VendorProductVersionRange
linuxlinux_kernel*≥2.6.33.1  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.167
linuxlinux_kernel*≥6.2  –  <6.6.130
linuxlinux_kernel*≥6.7  –  <6.12.78
linuxlinux_kernel*≥6.13  –  <6.18.19
linuxlinux_kernel*≥6.19  –  <6.19.9
linuxlinux_kernel2.6.33any
linuxlinux_kernel2.6.33any
linuxlinux_kernel2.6.33any
linuxlinux_kernel2.6.33any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/0606c24a745bafd1be5d66c48361638cd9cad74b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0a1fc25deabab4efce64610e3c449485c4fa8f5f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/10b5e65959e955a1c8894e0a5413944b5a70204a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/30e87ade8d678c25a8546cf38c0b498fa5cb27d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/519051c711dfd239ef6e4b28878efee400a035f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7eaeb778bfaa3b2a804f89321c234d59c74569db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e94eaef11142b01f77bf8ba4d0b59720b7858109
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fa5ba9867a55e640df0dc79bf0199770fb043f03
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0606c24a745bafd1be5d66c48361638cd9cad74b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0a1fc25deabab4efce64610e3c449485c4fa8f5f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/10b5e65959e955a1c8894e0a5413944b5a70204a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/30e87ade8d678c25a8546cf38c0b498fa5cb27d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/519051c711dfd239ef6e4b28878efee400a035f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7eaeb778bfaa3b2a804f89321c234d59c74569db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e94eaef11142b01f77bf8ba4d0b59720b7858109
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fa5ba9867a55e640df0dc79bf0199770fb043f03
    Patch