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CVE-2026-98205

Input: evdev - zero absinfo before partial copy in EVIOCSABS

In the Linux kernel, the following vulnerability has been resolved:

Input: evdev - zero absinfo before partial copy in EVIOCSABS

The EVIOCSABS handler copies at most the user supplied ioctl size into
an uninitialized on-stack struct input_absinfo:

	if (copy_from_user(&abs, p, min_t(size_t,
			size, sizeof(struct input_absinfo))))

The size comes from _IOC_SIZE() of the ioctl command and is therefore
fully controlled by userspace. A short size leaves the trailing part of
the structure holding whatever was on the kernel stack, and the whole
structure is then stored into the device:

	dev->absinfo[t] = abs;

EVIOCGABS hands that back to userspace, disclosing the stale stack
bytes. Only the resolution field is currently cleared, which covers the
legacy struct layout but not an arbitrarily short size.

Zero the structure before the copy so any part not supplied by the
caller reads back as zero. The existing resolution fixup is kept, since
it also handles a size that partially overlaps that field.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < c0aebb57b73c7d06ad21731099afe119b113c403
Status affected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < 89b6ffa4bc10c436fa9aecc73be105124cd58a35
Status affected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < e834e134a32b6a5c600fa539bb49146f617743ab
Status affected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < af5f7130cbf39e6e12336d0b7a5f6e76e4e1526b
Status affected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < 30b853a3d71f16bd0aa66b604bc37dd1254a19b3
Status affected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < 71e5619db11dd6429101bd967230d0321ec5ea26
Status affected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < 3dfe48d5307a1ba22c58231d04257737015569ca
Status affected
Version 448cd1664a573e69f54bfd32f3bb7220212b6cf5
Version < 8b852965b8eaf910c314dc346967ed82c8d4f235
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 2.6.36
Status affected
Version 0
Version < 2.6.36
Status unaffected
Version <= 5.10.*
Version 5.10.271
Status unaffected
Version <= 5.15.*
Version 5.15.222
Status unaffected
Version <= 6.1.*
Version 6.1.189
Status unaffected
Version <= 6.6.*
Version 6.6.158
Status unaffected
Version <= 6.12.*
Version 6.12.112
Status unaffected
Version <= 6.18.*
Version 6.18.54
Status unaffected
Version <= 7.2.*
Version 7.2.8
Status unaffected
Version <= *
Version 7.3-rc4
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.073
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/c0aebb57b73c7d06ad21731099afe119b113c403
https://git.kernel.org/stable/c/89b6ffa4bc10c436fa9aecc73be105124cd58a35
https://git.kernel.org/stable/c/e834e134a32b6a5c600fa539bb49146f617743ab
https://git.kernel.org/stable/c/af5f7130cbf39e6e12336d0b7a5f6e76e4e1526b
https://git.kernel.org/stable/c/30b853a3d71f16bd0aa66b604bc37dd1254a19b3
https://git.kernel.org/stable/c/71e5619db11dd6429101bd967230d0321ec5ea26
https://git.kernel.org/stable/c/3dfe48d5307a1ba22c58231d04257737015569ca
https://git.kernel.org/stable/c/8b852965b8eaf910c314dc346967ed82c8d4f235