CVE-2023-52810

Summary

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

fs/jfs: Add check for negative db_l2nbperpage

l2nbperpage is log2(number of blks per page), and the minimum legal value should be 0, not negative.

In the case of l2nbperpage being negative, an error will occur when subsequently used as shift exponent.

Syzbot reported this bug:

UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:799:12 shift exponent -16777216 is negative

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cc61fcf7d1c99f148fe8ddfb5c6ed0bb75861f01affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8f2964df6bfce9d92d81ca552010b8677af8d9dcaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a81a56b4cbe3142cc99f6b98e8f9b3a631c768e1affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 524b4f203afcf87accfe387e846f33f916f0c907affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5f148b16972e5f4592629b244d5109b15135f53faffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0cb567e727339a192f9fd0db00781d73a91d15a6affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 491085258185ffc4fb91555b0dba895fe7656a45affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1a7c53fdea1d189087544d9a606d249e93c4934baffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 525b861a008143048535011f3816d407940f4bfaaffected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux4.14.331 <= 4.14.*unaffected
LinuxLinux4.19.300 <= 4.19.*unaffected
LinuxLinux5.4.262 <= 5.4.*unaffected
LinuxLinux5.10.202 <= 5.10.*unaffected
LinuxLinux5.15.140 <= 5.15.*unaffected
LinuxLinux6.1.64 <= 6.1.*unaffected
LinuxLinux6.5.13 <= 6.5.*unaffected
LinuxLinux6.6.3 <= 6.6.*unaffected
LinuxLinux6.7 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References