CVE-2024-26973

Summary

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

fat: fix uninitialized field in nostale filehandles

When fat_encode_fh_nostale() encodes file handle without a parent it stores only first 10 bytes of the file handle. However the length of the file handle must be a multiple of 4 so the file handle is actually 12 bytes long and the last two bytes remain uninitialized. This is not great at we potentially leak uninitialized information with the handle to userspace. Properly initialize the full handle length.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < 9840d1897e28f8733cc1e38f97e044f987dc0a63affected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < f52d7663a10a1266a2d3871a6dd8fd111edc549faffected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < a276c595c3a629170b0f052a3724f755d7c6adc6affected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < b7fb63e807c6dadf7ecc1d43448c4f1711d7eeeeaffected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < c8cc05de8e6b5612b6e9f92c385c1a064b0db375affected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < 03a7e3f2ba3ca25f1da1d3898709a08db14c1abbaffected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < 74f852654b8b7866f15323685f1e178d3386c688affected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < cdd33d54e789d229d6d5007cbf3f53965ca1a5c6affected
LinuxLinuxea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 < fde2497d2bc3a063d8af88b258dbadc86bd7b57caffected
LinuxLinux3.10affected
LinuxLinux0 < 3.10unaffected
LinuxLinux4.19.312 <= 4.19.*unaffected
LinuxLinux5.4.274 <= 5.4.*unaffected
LinuxLinux5.10.215 <= 5.10.*unaffected
LinuxLinux5.15.154 <= 5.15.*unaffected
LinuxLinux6.1.84 <= 6.1.*unaffected
LinuxLinux6.6.24 <= 6.6.*unaffected
LinuxLinux6.7.12 <= 6.7.*unaffected
LinuxLinux6.8.3 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

Additional References

References