Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-46316— KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于vgic_its_invalidate_cache()函数在遍历ITS转换缓存时，对每个条目错误地放置迭代指针而非xa_erase()返回的值，导致并发操作中同一条目被多次释放。

CVSS 9.3 · Critical EPSS 0.20% · P10

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 8201d1028caa4fae88e222c4e8cf541fdf45b821< b7b72e88046328c9fdc638fe887d4240257dd5dc affected
8201d1028caa4fae88e222c4e8cf541fdf45b821< 2bbc395e81bd29c543a0529a678327e932a7ec69 affected
8201d1028caa4fae88e222c4e8cf541fdf45b821< 9121f4605ab94969f62d1b5714ca3c6c69bd202f affected
8201d1028caa4fae88e222c4e8cf541fdf45b821< 13031fb6b8357fbbcded2a7f4cba73e4781ee594 affected
6.10 affected
< 6.10 unaffected
6.12.93≤ 6.12.* unaffected
6.18.35≤ 6.18.* unaffected
… +2 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-46316

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于vgic_its_invalidate_cache()函数在遍历ITS转换缓存时，对每个条目错误地放置迭代指针而非xa_erase()返回的值，导致并发操作中同一条目被多次释放。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8201d1028caa4fae88e222c4e8cf541fdf45b821 ~ b7b72e88046328c9fdc638fe887d4240257dd5dc -
Linux Linux 6.10 -

II. Public POCs for CVE-2026-46316

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-46316

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-46316 (3)

Same Patch Batch · Linux · 2026-06-09 · 21 CVEs total

CVE-2026-46325 9.8 CRITICAL RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE
CVE-2026-46317 8.8 HIGH KVM: arm64: Reassign nested_mmus array behind mmu_lock
CVE-2026-46326 8.4 HIGH iio: pressure: mprls0025pa: fix spi_transfer struct initialisation
CVE-2026-46332 8.0 HIGH greybus: gb-beagleplay: bound bootloader receive buffering
CVE-2026-52907 7.8 HIGH media: rockchip: rkcif: fix off by one bugs
CVE-2026-46319 7.8 HIGH net/sched: act_ct: Only release RCU read lock after ct_ft
CVE-2026-46323 7.8 HIGH net: gro: don't merge zcopy skbs
CVE-2026-46330 7.8 HIGH Revert "net/smc: Introduce TCP ULP support"
CVE-2026-46324 7.8 HIGH netfilter: nf_tables: use list_del_rcu for netlink hooks
CVE-2026-46327 7.8 HIGH dm: fix unlocked test for dm_suspended_md
CVE-2026-52906 7.7 HIGH 9p: fix access mode flags being ORed instead of replaced
CVE-2026-46320 7.4 HIGH tap: free page on error paths in tap_get_user_xdp()
CVE-2026-46328 7.3 HIGH apparmor: fix rlimit for posix cpu timers
CVE-2026-46322 7.1 HIGH tun: free page on build_skb failure in tun_xdp_one()
CVE-2026-46321 7.1 HIGH tun: free page on short-frame rejection in tun_xdp_one()
CVE-2026-46329 erofs: handle end of filesystem properly for file-backed mounts
CVE-2026-52904 drm/nouveau: fix nvkm_device leak on aperture removal failure
CVE-2026-46318 Revert "mm/hugetlbfs: update hugetlbfs to use mmap_prepare"
CVE-2026-52905 mm/damon/core: disallow non-power of two min_region_sz on damon_start()
CVE-2026-46315 io_uring/waitid: clear waitid info before copying it to userspace

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46316

No comments yet

Leave a comment