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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2025-21963

cifs: Fix integer overflow while processing acdirmax mount option

Description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing acdirmax mount option User-provided mount parameter acdirmax of type u32 is intended to have an upper limit, but before it is validated, the value is converted from seconds to jiffies which can lead to an integer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 4c9f948142a550af416a2bfb5e56d29ce29e92cf to < 0c26edf477e093cefc41637f5bccc102e1a77399affected
  • 4c9f948142a550af416a2bfb5e56d29ce29e92cf to < 39d086bb3558da9640ef335f97453e01d32578a1affected
  • 4c9f948142a550af416a2bfb5e56d29ce29e92cf to < 9e438d0410a4002d24f420f2c28897ba2dc0af64affected
  • 4c9f948142a550af416a2bfb5e56d29ce29e92cf to < 2809a79bc64964ce02e0c5f2d6bd39b9d09bdb3caffected
  • 4c9f948142a550af416a2bfb5e56d29ce29e92cf to < 6124cbf73e3dea7591857dd63b8ccece28952afdaffected
  • 4c9f948142a550af416a2bfb5e56d29ce29e92cf to < 5b29891f91dfb8758baf1e2217bef4b16b2b165baffected

Linux Linux

Default version status: affected

  • 5.12affected
  • 0 to < 5.12unaffected
  • 5.15.180 to ≤ 5.15.*unaffected
  • 6.1.132 to ≤ 6.1.*unaffected
  • 6.6.84 to ≤ 6.6.*unaffected
  • 6.12.20 to ≤ 6.12.*unaffected
  • 6.13.8 to ≤ 6.13.*unaffected
  • 6.14 to ≤ *unaffected

References