bluetooth/l2cap: sync sock recv cb and release
In the Linux kernel, the following vulnerability has been resolved: bluetooth/l2cap: sync sock recv cb and release The problem occurs between the system call to close the sock and hci_rx_work, where the former releases the sock and the latter accesses it without lock protection. CPU0 CPU1 ---- ---- sock_close hci_rx_work l2cap_sock_release hci_acldata_packet l2cap_sock_kill l2cap_recv_frame sk_free l2cap_conless_channel l2cap_sock_recv_cb If hci_rx_work processes the data that needs to be received before the sock is closed, then everything is normal; Otherwise, the work thread may access the released sock when receiving data. Add a chan mutex in the rx callback of the sock to achieve synchronization between the sock release and recv cb. Sock is dead, so set chan data to NULL, avoid others use invalid sock pointer.
CVE-2024-41062
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-2024-41062
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": "5b4cedaa14bd1fe3ca1d59c684203a6ae7747faa",
"lessThan": "59a3ccd749b2550392ee531b4d727022eae4c89f",
"versionType": "git"
},
{
"status": "affected",
"version": "5b4cedaa14bd1fe3ca1d59c684203a6ae7747faa",
"lessThan": "9c0b7d61cf3c00f87f2529b5b8b785f0f65089aa",
"versionType": "git"
},
{
"status": "affected",
"version": "5b4cedaa14bd1fe3ca1d59c684203a6ae7747faa",
"lessThan": "605572e64cd9cebb05ed609d96cff05b50d18cdf",
"versionType": "git"
},
{
"status": "affected",
"version": "5b4cedaa14bd1fe3ca1d59c684203a6ae7747faa",
"lessThan": "b803f30ea23e0968b6c8285c42adf0d862ab2bf6",
"versionType": "git"
},
{
"status": "affected",
"version": "5b4cedaa14bd1fe3ca1d59c684203a6ae7747faa",
"lessThan": "3b732449b78183d17178db40be3a4401cf3cd629",
"versionType": "git"
},
{
"status": "affected",
"version": "5b4cedaa14bd1fe3ca1d59c684203a6ae7747faa",
"lessThan": "89e856e124f9ae548572c56b1b70c2255705f8fe",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/l2cap_sock.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.101",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.42",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.9.11",
"versionType": "semver",
"lessThanOrEqual": "6.9.*"
},
{
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/l2cap_sock.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-41062
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #8228 · Revision 1
- Added to Heist Feed
- Publisher date