In the Linux kernel, the following vulnerability has been resolved:
net: rose: include node references in rose_neigh refcount
Current implementation maintains two separate reference counting
mechanisms: the 'count' field in struct rose_neigh tracks references from
rose_node structures, while the 'use' field (now refcount_t) tracks
references from rose_sock.
This patch merges these two reference counting systems using 'use' field
for proper reference management. Specifically, this patch adds incrementing
and decrementing of rose_neigh->use when rose_neigh->count is incremented
or decremented.
This patch also modifies rose_rt_free(), rose_rt_device_down() and
rose_clear_route() to properly release references to rose_neigh objects
before freeing a rose_node through rose_remove_node().
These changes ensure rose_neigh structures are properly freed only when
all references, including those from rose_node structures, are released.
As a result, this resolves a slab-use-after-free issue reported by Syzbot.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
19 Oct 2026, 21:10
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| Summary |
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15 Oct 2026, 02:18
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Information
Published : 2025-09-16 13:16
Updated : 2026-10-19 21:10
NVD link : CVE-2025-39827
Mitre link : CVE-2025-39827
CVE.ORG link : CVE-2025-39827
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE