cpumap: Zero-initialise xdp_rxq_info struct before running XDP program
In the Linux kernel, the following vulnerability has been resolved: cpumap: Zero-initialise xdp_rxq_info struct before running XDP program When running an XDP program that is attached to a cpumap entry, we don't initialise the xdp_rxq_info data structure being used in the xdp_buff that backs the XDP program invocation. Tobias noticed that this leads to random values being returned as the xdp_md->rx_queue_index value for XDP programs running in a cpumap. This means we're basically returning the contents of the uninitialised memory, which is bad. Fix this by zero-initialising the rxq data structure before running the XDP program.
CVE-2024-27431
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-2024-27431
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": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"lessThan": "5f4e51abfbe6eb444fa91906a5cd083044278297",
"versionType": "git"
},
{
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"lessThan": "f0363af9619c77730764f10360e36c6445c12f7b",
"versionType": "git"
},
{
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"lessThan": "3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95",
"versionType": "git"
},
{
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"lessThan": "f562e4c4aab00986dde3093c4be919c3f2b85a4a",
"versionType": "git"
},
{
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"lessThan": "eaa7cb836659ced2d9f814ac32aa3ec193803ed6",
"versionType": "git"
},
{
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"lessThan": "2487007aa3b9fafbd2cb14068f49791ce1d7ede5",
"versionType": "git"
}
],
"programFiles": [
"kernel/bpf/cpumap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.213",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.152",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.82",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.22",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.7.10",
"versionType": "semver",
"lessThanOrEqual": "6.7.*"
},
{
"status": "unaffected",
"version": "6.8",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/bpf/cpumap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-27431
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26497 · Revision 1
- Added to Heist Feed
- Publisher date