CVE-2024-44966

Summary

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

binfmt_flat: Fix corruption when not offsetting data start

Commit 04d82a6d0881 ("binfmt_flat: allow not offsetting data start") introduced a RISC-V specific variant of the FLAT format which does not allocate any space for the (obsolete) array of shared library pointers. However, it did not disable the code which initializes the array, resulting in the corruption of sizeof(long) bytes before the DATA segment, generally the end of the TEXT segment.

Introduce MAX_SHARED_LIBS_UPDATE which depends on the state of CONFIG_BINFMT_FLAT_NO_DATA_START_OFFSET to guard the initialization of the shared library pointer region so that it will only be initialized if space is reserved for it.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux04d82a6d0881ef1ab1e9f66f10805177ee2fb1e8 < 3a684499261d0f7ed5ee72793025c88c2276809caffected
LinuxLinux04d82a6d0881ef1ab1e9f66f10805177ee2fb1e8 < af65d5383854cc3f172a7d0843b628758bf462c8affected
LinuxLinux04d82a6d0881ef1ab1e9f66f10805177ee2fb1e8 < 49df34d2b7da9e57c839555a2f7877291ce45ad1affected
LinuxLinux04d82a6d0881ef1ab1e9f66f10805177ee2fb1e8 < 9350ba06ee61db392c486716ac68ecc20e030f7caffected
LinuxLinux04d82a6d0881ef1ab1e9f66f10805177ee2fb1e8 < 3eb3cd5992f7a0c37edc8d05b4c38c98758d8671affected
LinuxLinux5.13affected
LinuxLinux0 < 5.13unaffected
LinuxLinux5.15.165 <= 5.15.*unaffected
LinuxLinux6.1.106 <= 6.1.*unaffected
LinuxLinux6.6.47 <= 6.6.*unaffected
LinuxLinux6.10.6 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References