RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()
In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry() When the device is in the fatal error state, write_tpt_entry() returns -EIO before handing the caller's preallocated skb to the transmit path; its allocation-failure returns do the same. c4iw_dereg_mr() ignores the error and frees mhp, leaking mhp->dereg_skb. c4iw_get_dma_mr() instead frees the skb a second time after dereg_mem() already consumed it, a double free. Make write_tpt_entry() the sole owner of a non-NULL skb, freeing it on every return preceding handoff to c4iw_ofld_send(): fatal error, tpt and stag allocation failure. c4iw_ofld_send() consumes the skb on success and error alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after dereg_mem().
CVE-2026-90417
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-2026-90417
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": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
"lessThan": "68c1d2c085f205e8a5338bc3d3304f897deca4d9",
"versionType": "git"
},
{
"status": "affected",
"version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
"lessThan": "379cf06e6fe34af980064c6ccaf15d8e26ec4a42",
"versionType": "git"
},
{
"status": "affected",
"version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
"lessThan": "2fcd26f4680143e9ec477069530548dbe20fce6f",
"versionType": "git"
},
{
"status": "affected",
"version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
"lessThan": "6b15fc9bc117fb6597fa1c2cc30284aafe71101c",
"versionType": "git"
},
{
"status": "affected",
"version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
"lessThan": "373f3716a2de7adc739269ebb4d87e5bf4dc180c",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/hw/cxgb4/mem.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/hw/cxgb4/mem.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90417
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48691 · Revision 1
- Added to Heist Feed
- Publisher date