CVE-2024-26926

Summary

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

binder: check offset alignment in binder_get_object()

Commit 6d98eb95b450 ("binder: avoid potential data leakage when copying txn") introduced changes to how binder objects are copied. In doing so, it unintentionally removed an offset alignment check done through calls to binder_alloc_copy_from_buffer() -> check_buffer().

These calls were replaced in binder_get_object() with copy_from_user(), so now an explicit offset alignment check is needed here. This avoids later complications when unwinding the objects gets harder.

It is worth noting this check existed prior to commit 7a67a39320df ("binder: add function to copy binder object from buffer"), likely removed due to redundancy at the time.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc056a6ba35e00ae943e377eb09abd77a6915b31a < 68a28f551e4690db2b27b3db716c7395f6fada12affected
LinuxLinux23e9d815fad84c1bee3742a8de4bd39510435362 < 48a1f83ca9c68518b1a783c62e6a8223144fa9fcaffected
LinuxLinux7a9ad4aceb0226b391c9d3b8e4ac2e7d438b6bde < a2fd6dbc98be1105a1d8e9e31575da8873ef115caffected
LinuxLinux6d98eb95b450a75adb4516a1d33652dc78d2b20c < a6d2a8b211c874971ee4cf3ddd167408177f6e76affected
LinuxLinux6d98eb95b450a75adb4516a1d33652dc78d2b20c < 1d7f1049035b2060342f11eff957cf567d810bdcaffected
LinuxLinux6d98eb95b450a75adb4516a1d33652dc78d2b20c < f01d6619045704d78613b14e2e0420bfdb7f1c15affected
LinuxLinux6d98eb95b450a75adb4516a1d33652dc78d2b20c < aaef73821a3b0194a01bd23ca77774f704a04d40affected
LinuxLinux66e12f5b3a9733f941893a00753b10498724607daffected
LinuxLinux5.4.226 < 5.4.275affected
LinuxLinux5.10.157 < 5.10.216affected
LinuxLinux5.15.17 < 5.15.157affected
LinuxLinux5.16.3 < 5.17affected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux5.4.275 <= 5.4.*unaffected
LinuxLinux5.10.216 <= 5.10.*unaffected
LinuxLinux5.15.157 <= 5.15.*unaffected
LinuxLinux6.1.88 <= 6.1.*unaffected
LinuxLinux6.6.29 <= 6.6.*unaffected
LinuxLinux6.8.8 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References