netlink: terminate outstanding dump on socket close
In the Linux kernel, the following vulnerability has been resolved: netlink: terminate outstanding dump on socket close Netlink supports iterative dumping of data. It provides the families the following ops: - start - (optional) kicks off the dumping process - dump - actual dump helper, keeps getting called until it returns 0 - done - (optional) pairs with .start, can be used for cleanup The whole process is asynchronous and the repeated calls to .dump don't actually happen in a tight loop, but rather are triggered in response to recvmsg() on the socket. This gives the user full control over the dump, but also means that the user can close the socket without getting to the end of the dump. To make sure .start is always paired with .done we check if there is an ongoing dump before freeing the socket, and if so call .done. The complication is that sockets can get freed from BH and .done is allowed to sleep. So we use a workqueue to defer the call, when needed. Unfortunately this does not work correctly. What we defer is not the cleanup but rather releasing a reference on the socket. We have no guarantee that we own the last reference, if someone else holds the socket they may release it in BH and we're back to square one. The whole dance, however, appears to be unnecessary. Only the user can interact with dumps, so we can clean up when socket is closed. And close always happens in process context. Some async code may still access the socket after close, queue notification skbs
CVE-2024-53140
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-2024-53140
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": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "114a61d8d94ae3a43b82446cf737fd757021b834",
"versionType": "git"
},
{
"status": "affected",
"version": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "598c956b62699c3753929602560d8df322e60559",
"versionType": "git"
},
{
"status": "affected",
"version": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "6e3f2c512d2b7dbd247485b1dd9e43e4210a18f4",
"versionType": "git"
},
{
"status": "affected",
"version": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "d2fab3d66cc16cfb9e3ea1772abe6b79b71fa603",
"versionType": "git"
},
{
"status": "affected",
"version": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "4e87a52133284afbd40fb522dbf96e258af52a98",
"versionType": "git"
},
{
"status": "affected",
"version": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "bbc769d2fa1b8b368c5fbe013b5b096afa3c05ca",
"versionType": "git"
},
{
"status": "affected",
"version": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "176c41b3ca9281a9736b67c6121b03dbf0c8c08f",
"versionType": "git"
},
{
"status": "affected",
"version": "ed5d7788a934a4b6d6d025e948ed4da496b4f12e",
"lessThan": "1904fb9ebf911441f90a68e96b22aa73e4410505",
"versionType": "git"
},
{
"status": "affected",
"version": "baaf0c65bc8ea9c7a404b09bc8cc3b8a1e4f18df",
"versionType": "git"
},
{
"status": "affected",
"version": "25d9b4bb64ea964769087fc5ae09aee9c838d759",
"versionType": "git"
},
{
"status": "affected",
"version": "4.4.38",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.8.14",
"lessThan": "4.9",
"versionType": "semver"
}
],
"programFiles": [
"net/netlink/af_netlink.c",
"net/netlink/af_netlink.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.325",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.287",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.231",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.174",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.119",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.63",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.11.10",
"versionType": "semver",
"lessThanOrEqual": "6.11.*"
},
{
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/netlink/af_netlink.c",
"net/netlink/af_netlink.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-53140
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30391 · Revision 1
- Added to Heist Feed
- Publisher date