CVE-2026-74495
igbvf: Fix leak in TX DMA error cleanup
Description
In the Linux kernel, the following vulnerability has been resolved: igbvf: Fix leak in TX 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 before each frag 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 (the head) would leak. This bug was introduced by a 2010 fix for an endless loop in dma_error. All other affected drivers have already been fixed.
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 15, 2026, 1:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74495
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to include the igbvf driver fix.
- Ensure all DMA mapping operations are properly handled.
- Verify buffer unmapping logic in error conditions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74495.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74495 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74495
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74495 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74495 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c1fa347f20f17f14a4a1575727fa24340e8a9117', 'lessThan': '31089f4eab42e0fc248ec80c26f9b0bad59ba4cc', 'versionType': 'git'}, {'status': 'affected', 'version': 'c1fa347f20f17f14a4a1575727fa24340e8a9117', 'lessThan': 'bc25d56c03e41c10bc4b40e99ca5d7b941675c04', 'versionType': 'git'}, {'status': 'affected', 'version': 'c1fa347f20f17f14a4a1575727fa24340e8a9117', 'lessThan': '845a9cdd9b03b7b6fa8de3ee80579780350a7f65', 'versionType': 'git'}, {'status': 'affected', 'version': 'c1fa347f20f17f14a4a1575727fa24340e8a9117', 'lessThan': 'df07003b5a6c6c9fce60d765d6a3da815a74c41c', 'versionType': 'git'}, {'status': 'affected', 'version': 'c1fa347f20f17f14a4a1575727fa24340e8a9117', 'lessThan': '0565052b7e2f436b7f1541f4849da96dc0aa7a0e', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/intel/igbvf/netdev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.33'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.33', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/intel/igbvf/netdev.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: igbvf: Fix leak in TX 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 before each frag 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 (the head) would leak. This bug was introduced by a 2010 fix for an endless loop in dma_error. All other affected drivers have already been fixed. Added Reference https://git.kernel.org/stable/c/0565052b7e2f436b7f1541f4849da96dc0aa7a0e Added Reference https://git.kernel.org/stable/c/31089f4eab42e0fc248ec80c26f9b0bad59ba4cc Added Reference https://git.kernel.org/stable/c/845a9cdd9b03b7b6fa8de3ee80579780350a7f65 Added Reference https://git.kernel.org/stable/c/bc25d56c03e41c10bc4b40e99ca5d7b941675c04 Added Reference https://git.kernel.org/stable/c/df07003b5a6c6c9fce60d765d6a3da815a74c41c