CVE-2025-39888
published 2025-09-23CVE-2025-39888: In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.14%
3.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
fuse: Block access to folio overlimit
syz reported a slab-out-of-bounds Write in fuse_dev_do_write.
When the number of bytes to be retrieved is truncated to the upper limit
by fc->max_pages and there is an offset, the oob is triggered.
Add a loop termination condition to prevent overruns.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.16.8-1 (forky) | linux 6.16.8-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 3568a956932621cafadafc8b75fcf6dc06555105 < 623719227b114d73a2cee45f1b343ced63ce09ec | 623719227b114d73a2cee45f1b343ced63ce09ec |
| linux | linux | >= 3568a956932621cafadafc8b75fcf6dc06555105 < 9d81ba6d49a7457784f0b6a71046818b86ec7e44 | 9d81ba6d49a7457784f0b6a71046818b86ec7e44 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.16.8-1 | 6.16.8-1 |
| linux | linux_kernel | >= 6.16 < 6.16.8 | 6.16.8 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
vendor_redhat7.8HIGH
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OSV
CVE-2025-39888: In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in f
osv·2025-09-23·CVSS 7.8
CVE-2025-39888 [HIGH] CVE-2025-39888: In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in f
In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in fuse_dev_do_write. When the number of bytes to be retrieved is truncated to the upper limit by fc->max_pages and there is an offset, the oob is triggered. Add a loop termination condition to prevent overruns.
GHSA
GHSA-jgjw-jx49-6q8j: In the Linux kernel, the following vulnerability has been resolved:
fuse: Block access to folio overlimit
syz reported a slab-out-of-bounds Write in
ghsa_unreviewed·2025-09-23
CVE-2025-39888 [HIGH] CWE-787 GHSA-jgjw-jx49-6q8j: In the Linux kernel, the following vulnerability has been resolved:
fuse: Block access to folio overlimit
syz reported a slab-out-of-bounds Write in
In the Linux kernel, the following vulnerability has been resolved:
fuse: Block access to folio overlimit
syz reported a slab-out-of-bounds Write in fuse_dev_do_write.
When the number of bytes to be retrieved is truncated to the upper limit
by fc->max_pages and there is an offset, the oob is triggered.
Add a loop termination condition to prevent overruns.
Red Hat
kernel: fuse: Block access to folio overlimit
vendor_redhat·2025-09-23·CVSS 7.8
CVE-2025-39888 [HIGH] CWE-125 kernel: fuse: Block access to folio overlimit
kernel: fuse: Block access to folio overlimit
In the Linux kernel, the following vulnerability has been resolved:
fuse: Block access to folio overlimit
syz reported a slab-out-of-bounds Write in fuse_dev_do_write.
When the number of bytes to be retrieved is truncated to the upper limit
by fc->max_pages and there is an offset, the oob is triggered.
Add a loop termination condition to prevent overruns.
An out-of-bounds write vulnerability exists in the linux kernel, such that in fuse_dev_do_write, when the number of bytes to be retrieved is truncated to the upper limit by fc->max_pages and there is an offset, the OOB is triggered.
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria, comprising ea
Debian
CVE-2025-39888: linux - In the Linux kernel, the following vulnerability has been resolved: fuse: Block...
vendor_debian·2025·CVSS 7.8
CVE-2025-39888 [HIGH] CVE-2025-39888: linux - In the Linux kernel, the following vulnerability has been resolved: fuse: Block...
In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in fuse_dev_do_write. When the number of bytes to be retrieved is truncated to the upper limit by fc->max_pages and there is an offset, the oob is triggered. Add a loop termination condition to prevent overruns.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved (fixed in 6.16.8-1)
sid: resolved (fixed in 6.16.8-1)
trixie: resolved
No detection rules found.
No public exploits indexed.
2025-09-23
Published