RDMA/erdma: Fix CEQ tasklet use-after-free on removal
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Fix CEQ tasklet use-after-free on removal Each CEQ interrupt handler only schedules eqc->tasklet. The tasklet calls erdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring through get_next_valid_eqe() and updates eq->dbrec through notify_eq(). erdma_ceqs_uninit() frees each CEQ IRQ and then destroys its EQ. free_irq() prevents another hard IRQ and waits for an in-flight handler, but it does not drain a tasklet that the handler already scheduled. The tasklet can therefore access eq->qbuf or eq->dbrec after erdma_eq_destroy() frees them. Clearing ceq_cb->ready does not synchronize with a tasklet that already passed the check at the start of erdma_ceq_completion_handler(). Kill the tasklet after free_irq(), when no handler can schedule it again, and before erdma_ceq_uninit_one() releases the EQ buffers.
CVE-2026-92514
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-2026-92514
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": "f2a0a630b953451a59a2612ad8c29246638f0a38",
"lessThan": "0e8b78dabb1f156db05ffe74c6eae861167c7c21",
"versionType": "git"
},
{
"status": "affected",
"version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
"lessThan": "6e129c1310abfa786a510cc63e69c5ef12349048",
"versionType": "git"
},
{
"status": "affected",
"version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
"lessThan": "f738c0a372d36a10dfae6dc357717c13b2aa72f4",
"versionType": "git"
},
{
"status": "affected",
"version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
"lessThan": "a60c36d8d17f1b86705523d5eb6d290df28831e5",
"versionType": "git"
},
{
"status": "affected",
"version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
"lessThan": "61a25b8d333e1eb2a189881d516f8d5194e26840",
"versionType": "git"
},
{
"status": "affected",
"version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
"lessThan": "0ca79979384f031d710c4b3bae065dcb5d95aca3",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/hw/erdma/erdma_eq.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"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/erdma/erdma_eq.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-92514
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37763 · Revision 1
- Added to Heist Feed
- Publisher date