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CVE-2022-50746

erofs: validate the extent length for uncompressed pclusters

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

erofs: validate the extent length for uncompressed pclusters

syzkaller reported a KASAN use-after-free:
https://syzkaller.appspot.com/bug?extid=2ae90e873e97f1faf6f2

The referenced fuzzed image actually has two issues:
 - m_pa == 0 as a non-inlined pcluster;
 - The logical length is longer than its physical length.

The first issue has already been addressed.  This patch addresses
the second issue by checking the extent length validity.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 02827e1796b33f1794966f5c3101f8da2dfa9c1d
Version < dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e
Status affected
Version 02827e1796b33f1794966f5c3101f8da2dfa9c1d
Version < 40c73b2ea9611b5388807be406f30f5e4e1162da
Status affected
Version 02827e1796b33f1794966f5c3101f8da2dfa9c1d
Version < c505feba4c0d76084e56ec498ce819f02a7043ae
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 4.19
Status affected
Version 0
Version < 4.19
Status unaffected
Version <= 6.0.*
Version 6.0.16
Status unaffected
Version <= 6.1.*
Version 6.1.2
Status unaffected
Version <= *
Version 6.2
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 0.03% 0.092
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
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