s390/ism: Fix UAF of sba and ieq during ism_dev_exit()
In the Linux kernel, the following vulnerability has been resolved: s390/ism: Fix UAF of sba and ieq during ism_dev_exit() A ism interrupt handler can be active in parallel with ism_dev_exit(), accessing freed data structures. No new interrupts will be generated after unregister_ieq(). Drain ongoing interrupt handlers by free_irq(), before freeing ism data structures.
CVE-2026-74690
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-2026-74690
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": "684b89bc39ce4f204b1a2b180f39f2eb36a6b695",
"lessThan": "950dac9e8c4e3cf68fa8c01f77d3ac3b7369c6a9",
"versionType": "git"
},
{
"status": "affected",
"version": "684b89bc39ce4f204b1a2b180f39f2eb36a6b695",
"lessThan": "58803870ba0841e53b630a1290c6838b091dd128",
"versionType": "git"
},
{
"status": "affected",
"version": "684b89bc39ce4f204b1a2b180f39f2eb36a6b695",
"lessThan": "fc3021284050ecb3bba8a7851340cedcb5037928",
"versionType": "git"
},
{
"status": "affected",
"version": "684b89bc39ce4f204b1a2b180f39f2eb36a6b695",
"lessThan": "774394d27930ec4cf4cb3eed8ab6a4d20cb2430a",
"versionType": "git"
},
{
"status": "affected",
"version": "684b89bc39ce4f204b1a2b180f39f2eb36a6b695",
"lessThan": "b1896543ce59c4258625a35cf41e23a9a1f80ea2",
"versionType": "git"
}
],
"programFiles": [
"drivers/s390/net/ism_drv.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.19",
"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": "6.18.45",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.9",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/s390/net/ism_drv.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74690
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46587 · Revision 1
- Added to Heist Feed
- Publisher date