net/mlx5: HWS, fix matcher leak on resize target setup failure
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: HWS, fix matcher leak on resize target setup failure hws_bwc_matcher_move() allocates a replacement matcher before setting it as the resize target. If mlx5hws_matcher_resize_set_target() fails, the replacement matcher is not attached anywhere and is leaked. Fix the leak by destroying the replacement matcher before returning from the resize-target failure path. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have a mlx5 HWS-capable device to test with, no runtime testing was able to be performed.
CVE-2026-72032
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: osv:CVE-2026-72032
Kernel
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 6.12.101
Source reference:
/affected/1/ranges6.18.40Source reference:
/affected/1/ranges7.1.5Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "2111bb970c787b16b002dc726c1d296ce87a00fb"
},
{
"fixed": "a751ccdc6ea9bde154f25a5ba66926f462f96c19"
},
{
"fixed": "1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a"
},
{
"fixed": "ae0265f0a95aaacef59d560a3e1ea36db8be9a52"
},
{
"fixed": "bb09d0e64ecaa0aa0f7d1133a1696ed74dead295"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72032.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.12.0"
},
{
"fixed": "6.12.101"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.40"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "7.1.5"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72032.json"
}
}
]- Related CVEs
- CVE-2026-72032
Source reference:
/id
Publisher severity
No explicit severity was provided.
- Event
- #50791 · Revision 1
- Added to Heist Feed
- Publisher date