irqchip/renesas-rzg2l: Fix loss of interrupt
In the Linux kernel, the following vulnerability has been resolved: irqchip/renesas-rzg2l: Fix loss of interrupt rzg2l_clear_irq_int() and rzg2l_clear_tint_int() perform a read-modify-write on the ISCR/TSCR status registers to clear the bit for the interrupt just handled. Since these registers are write-0-to-clear per bit, this is racy: If another interrupt's status bit gets set between the read and the write, that bit is written back as 0 by the software-constructed value, clearing an interrupt that hasn't been serviced yet and losing it. This can be reproduced by triggering multiple interrupts at once, e.g.: gpioset -c gpiochip0 355=0 353=0 328=0 352=0 Fix this by writing back only the bit being cleared, with all other bits set to 1, instead of read-modify-writing the whole register. Since 1-bits are left unchanged by hardware, concurrently-set status bits for other interrupts are preserved.
CVE-2026-90124
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-2026-90124
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": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
"lessThan": "c043591f03a8111f7d306b8122c444a949486269",
"versionType": "git"
},
{
"status": "affected",
"version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
"lessThan": "b5ba8b861b5d833394bd23df3f4b59883ef18c88",
"versionType": "git"
},
{
"status": "affected",
"version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
"lessThan": "3791e242ec2e5a5cd9e010a75ed1125d0e84d394",
"versionType": "git"
},
{
"status": "affected",
"version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
"lessThan": "38c6831fefde0ff89f8d2dcb924f957a89dec414",
"versionType": "git"
},
{
"status": "affected",
"version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
"lessThan": "dbecbe23dc606c4af68b4591a41124186f5c1802",
"versionType": "git"
},
{
"status": "affected",
"version": "3fed09559cd8be79568d368ce02bf7f2d56259b6",
"lessThan": "50b10bd0c2d721ad38abd1abe3acdefb6caa0944",
"versionType": "git"
}
],
"programFiles": [
"drivers/irqchip/irq-renesas-rzg2l.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/irqchip/irq-renesas-rzg2l.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90124
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36525 · Revision 1
- Added to Heist Feed
- Publisher date