net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA mlx5e_xfrm_add_state() handles acquire-flow temporary SAs by allocating software state and skipping hardware offload setup. That path jumps to the common success label before taking the eswitch mode block. After tunnel-mode validation was moved earlier, the common success label unconditionally calls mlx5_eswitch_unblock_mode(). For acquire SAs, this decrements esw->offloads.num_block_mode without a matching increment. Return directly after installing the acquire SA offload handle, so only the paths that successfully called mlx5_eswitch_block_mode() call the matching unblock.
CVE-2026-64522
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-2026-64522
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": "22239eb258bc1e6ccdb2d3502fce1cc2b2a88386",
"lessThan": "b5bd4249e430f5963d559708ee96a671716d2400",
"versionType": "git"
},
{
"status": "affected",
"version": "22239eb258bc1e6ccdb2d3502fce1cc2b2a88386",
"lessThan": "ecafd8284e527666e83261e6e57a7c7341d591cb",
"versionType": "git"
},
{
"status": "affected",
"version": "22239eb258bc1e6ccdb2d3502fce1cc2b2a88386",
"lessThan": "abe003b33223ff33552f291644bf35d9c2f992fb",
"versionType": "git"
},
{
"status": "affected",
"version": "993c4ba71596c30418ba5a0ddcf4f9c2f431466a",
"versionType": "git"
},
{
"status": "affected",
"version": "6.17.4",
"lessThan": "6.18",
"versionType": "semver"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.34",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.11",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64522
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41062 · Revision 1
- Added to Heist Feed
- Publisher date