igbvf: Fix leak in TX DMA error cleanup
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.
CVE-2026-74495
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74495
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "c1fa347f20f17f14a4a1575727fa24340e8a9117",
"lessThan": "e42b7225c45f57b42306b80cdd3bda202bae7293",
"versionType": "git"
},
{
"status": "affected",
"version": "c1fa347f20f17f14a4a1575727fa24340e8a9117",
"lessThan": "e3ed89c257f6361f13df23023cd10ace830330ad",
"versionType": "git"
},
{
"status": "affected",
"version": "c1fa347f20f17f14a4a1575727fa24340e8a9117",
"lessThan": "56726ff12cb6759ab90d6f5332c2377aeca7d249",
"versionType": "git"
},
{
"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": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"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",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/intel/igbvf/netdev.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74495
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #33182 · Revision 1
- Added to Heist Feed
- Publisher date