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CVE-2026-74634

ring-buffer: Prevent subbuf order change when resizing is disabled

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

ring-buffer: Prevent subbuf order change when resizing is disabled

Because ring_buffer_subbuf_order_set() frees buffer pages, we can't
allow it when resizing is disabled. A non-consuming reader is at risk of
use-after-free (rb_advance_iter()).

Return -EBUSY on resize_disabled, matching ring_buffer_resize()
behaviour.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version f9b94daa542a8d2532f0930f01cd9aec2d19621b
Version < b45b91db41379ee5fb36c187d6d7c37b725cbe8e
Status affected
Version f9b94daa542a8d2532f0930f01cd9aec2d19621b
Version < 62978cf6347972c04130e4e841ba404504d92b32
Status affected
Version f9b94daa542a8d2532f0930f01cd9aec2d19621b
Version < 7568e9e717e7540bd05bcc007f5d76fcaff3cdff
Status affected
Version f9b94daa542a8d2532f0930f01cd9aec2d19621b
Version < bf98d7b0d5a99991e47e66cee4eb1d3fa514be97
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.8
Status affected
Version 0
Version < 6.8
Status unaffected
Version <= 6.12.*
Version 6.12.104
Status unaffected
Version <= 6.18.*
Version 6.18.45
Status unaffected
Version <= 7.1.*
Version 7.1.9
Status unaffected
Version <= *
Version 7.2
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 0.17% 0.062
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/62978cf6347972c04130e4e841ba404504d92b32
https://git.kernel.org/stable/c/7568e9e717e7540bd05bcc007f5d76fcaff3cdff
https://git.kernel.org/stable/c/b45b91db41379ee5fb36c187d6d7c37b725cbe8e
https://git.kernel.org/stable/c/bf98d7b0d5a99991e47e66cee4eb1d3fa514be97