In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry
vgic_its_invalidate_cache() walks the per-ITS translation cache with
xa_for_each() and drops the cache's reference on each entry with
vgic_put_irq(). It puts the iterated pointer, though, rather than the
value returned by xa_erase().
The function is called from contexts that do not exclude one another: the
ITS command handlers hold its_lock, the GITS_CTLR write path holds
cmd_lock, and the path that clears EnableLPIs in a redistributor's
GICR_CTLR holds neither. Two or more of them can drain the same cache
concurrently, and if each one observes the same entry, erases it and then
puts it, the single reference the cache holds on that entry is dropped
more than once. The entry can then be freed while an ITE still maps it.
xa_erase() is atomic and returns the previous entry, so put only the entry
that this context actually removed. The cache reference is then dropped
exactly once per entry even when the invalidations run concurrently, and
the behavior is unchanged when only one context runs.
References
Configurations
Configuration 1 (hide)
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History
22 Jul 2026, 12:18
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15 Jul 2026, 02:22
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14 Jul 2026, 12:17
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08 Jul 2026, 14:50
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| References | () https://git.kernel.org/stable/c/13031fb6b8357fbbcded2a7f4cba73e4781ee594 - Patch | |
| References | () https://git.kernel.org/stable/c/2bbc395e81bd29c543a0529a678327e932a7ec69 - Patch | |
| References | () https://git.kernel.org/stable/c/9121f4605ab94969f62d1b5714ca3c6c69bd202f - Patch | |
| References | () https://git.kernel.org/stable/c/b7b72e88046328c9fdc638fe887d4240257dd5dc - Patch | |
| References | () https://access.redhat.com/errata/RHSA-2026:34911 - Third Party Advisory | |
| References | () https://access.redhat.com/errata/RHSA-2026:36018 - Third Party Advisory | |
| References | () https://access.redhat.com/security/cve/CVE-2026-46316 - Third Party Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2486982 - Third Party Advisory | |
| References | () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46316.json - Third Party Advisory | |
| First Time |
Linux linux Kernel
Linux |
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| CWE | NVD-CWE-Other | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:* |
07 Jul 2026, 12:16
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03 Jul 2026, 13:17
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30 Jun 2026, 03:20
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| CWE | CWE-911 | |
| References |
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14 Jun 2026, 06:16
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.3 |
09 Jun 2026, 13:16
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| New CVE |
Information
Published : 2026-06-09 13:16
Updated : 2026-07-22 12:18
NVD link : CVE-2026-46316
Mitre link : CVE-2026-46316
CVE.ORG link : CVE-2026-46316
JSON object : View
Products Affected
linux
- linux_kernel
CWE