can: bcm: extend bcm_tx_lock usage for data and timer updates
In the Linux kernel, the following vulnerability has been resolved: can: bcm: extend bcm_tx_lock usage for data and timer updates Stage new CAN frame content for an existing tx op into a kmalloc()'d buffer and validate it there, mirroring the approach already used in bcm_rx_setup(). Only copy the validated data into op->frames while holding op->bcm_tx_lock, so bcm_can_tx() and bcm_tx_timeout_handler() can no longer observe a partially updated or unvalidated frame. Add a missing error path for memcpy_from_msg() when copying CAN frame data from userspace. Also move the kt_ival1/kt_ival2/ival1/ival2 updates in bcm_tx_setup() under op->bcm_tx_lock, and read kt_ival1/kt_ival2/count under the same lock in bcm_tx_set_expiry() and bcm_tx_timeout_handler(), closing the torn 64-bit ktime_t read on 32-bit platforms.
CVE-2026-72119
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-2026-72119
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": "7595de7bc56e0e52b74e56c90f7e247bf626d628",
"lessThan": "a538b072ee074c9b41b9d9c15a6861a963e30755",
"versionType": "git"
},
{
"status": "affected",
"version": "fbd8fdc2b218e979cfe422b139b8f74c12419d1f",
"lessThan": "63422347b4c782f429748b2a09cd3cf3b77e6abd",
"versionType": "git"
},
{
"status": "affected",
"version": "2a437b86ac5a9893c902f30ef66815bf13587bf6",
"lessThan": "37917e432e50b7de2b64230974380132a30f7270",
"versionType": "git"
},
{
"status": "affected",
"version": "76c84c3728178b2d38d5604e399dfe8b0752645e",
"lessThan": "52f06e7603780de100233713ddaf971d422e10ef",
"versionType": "git"
},
{
"status": "affected",
"version": "cc55dd28c20a6611e30596019b3b2f636819a4c0",
"lessThan": "972fd66bb08fdef1090abe43196ca8da07216d13",
"versionType": "git"
},
{
"status": "affected",
"version": "c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7",
"lessThan": "bd46f55dec608daa44b45dcf3328517630ad8e40",
"versionType": "git"
},
{
"status": "affected",
"version": "c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7",
"lessThan": "337f966c00662d81ad82cf5a4bbb150b2e32c0d4",
"versionType": "git"
},
{
"status": "affected",
"version": "c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7",
"lessThan": "12ce799f7ab1e05bd8fbf79e46f403bfe5597ebc",
"versionType": "git"
},
{
"status": "affected",
"version": "8f1c022541bf5a923c8d6fa483112c15250f30a4",
"versionType": "git"
},
{
"status": "affected",
"version": "c4e8a172501e677ebd8ea9d9161d97dc4df56fbd",
"versionType": "git"
},
{
"status": "affected",
"version": "5.10.238",
"lessThan": "5.10.265",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.185",
"lessThan": "5.15.216",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.141",
"lessThan": "6.1.183",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.93",
"lessThan": "6.6.148",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.31",
"lessThan": "6.12.101",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.294",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.14.9",
"lessThan": "6.15",
"versionType": "semver"
}
],
"programFiles": [
"net/can/bcm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"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": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/can/bcm.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72119
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #32946 · Revision 1
- Added to Heist Feed
- Publisher date