net: fec: handle page_pool_dev_alloc_pages error
In the Linux kernel, the following vulnerability has been resolved: net: fec: handle page_pool_dev_alloc_pages error The fec_enet_update_cbd function calls page_pool_dev_alloc_pages but did not handle the case when it returned NULL. There was a WARN_ON(!new_page) but it would still proceed to use the NULL pointer and then crash. This case does seem somewhat rare but when the system is under memory pressure it can happen. One case where I can duplicate this with some frequency is when writing over a smbd share to a SATA HDD attached to an imx6q. Setting /proc/sys/vm/min_free_kbytes to higher values also seems to solve the problem for my test case. But it still seems wrong that the fec driver ignores the memory allocation error and can crash. This commit handles the allocation error by dropping the current packet.
CVE-2025-21676
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-2025-21676
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": "95698ff6177b5f1f13f251da60e7348413046ae4",
"lessThan": "eacdcc14f3c8d4c1447565521e792ddb3a67e08d",
"versionType": "git"
},
{
"status": "affected",
"version": "95698ff6177b5f1f13f251da60e7348413046ae4",
"lessThan": "8a0097db0544b658c159ac787319737712063a23",
"versionType": "git"
},
{
"status": "affected",
"version": "95698ff6177b5f1f13f251da60e7348413046ae4",
"lessThan": "1425cb829556398f594658512d49292f988a2ab0",
"versionType": "git"
},
{
"status": "affected",
"version": "95698ff6177b5f1f13f251da60e7348413046ae4",
"lessThan": "001ba0902046cb6c352494df610718c0763e77a5",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/freescale/fec_main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.74",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.11",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/freescale/fec_main.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21676
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26903 · Revision 1
- Added to Heist Feed
- Publisher date