CVE-2024-26926 — binder: check offset alignment in binder_get_object()

Description (CNA)

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 (CNA)

Vendor / product	Versions
Linux / Linux	affected c056a6ba35e00ae943e377eb09abd77a6915b31a before 68a28f551e4690db2b27b3db716c7395f6fada12; affected 23e9d815fad84c1bee3742a8de4bd39510435362 before 48a1f83ca9c68518b1a783c62e6a8223144fa9fc; affected 7a9ad4aceb0226b391c9d3b8e4ac2e7d438b6bde before a2fd6dbc98be1105a1d8e9e31575da8873ef115c; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before a6d2a8b211c874971ee4cf3ddd167408177f6e76; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before 1d7f1049035b2060342f11eff957cf567d810bdc; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before f01d6619045704d78613b14e2e0420bfdb7f1c15; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before aaef73821a3b0194a01bd23ca77774f704a04d40; affected 66e12f5b3a9733f941893a00753b10498724607d; affected 5.4.226 before 5.4.275; affected 5.10.157 before 5.10.216; affected 5.15.17 before 5.15.157; affected 5.16.3 before 5.17
Linux / Linux	affected 5.17; unaffected 0 before 5.17; unaffected 5.4.275 through 5.4.; unaffected 5.10.216 through 5.10.; unaffected 5.15.157 through 5.15.; unaffected 6.1.88 through 6.1.; unaffected 6.6.29 through 6.6.; unaffected 6.8.8 through 6.8.; unaffected 6.9 through *

Vendor / product

Versions

Linux / Linux

affected c056a6ba35e00ae943e377eb09abd77a6915b31a before 68a28f551e4690db2b27b3db716c7395f6fada12; affected 23e9d815fad84c1bee3742a8de4bd39510435362 before 48a1f83ca9c68518b1a783c62e6a8223144fa9fc; affected 7a9ad4aceb0226b391c9d3b8e4ac2e7d438b6bde before a2fd6dbc98be1105a1d8e9e31575da8873ef115c; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before a6d2a8b211c874971ee4cf3ddd167408177f6e76; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before 1d7f1049035b2060342f11eff957cf567d810bdc; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before f01d6619045704d78613b14e2e0420bfdb7f1c15; affected 6d98eb95b450a75adb4516a1d33652dc78d2b20c before aaef73821a3b0194a01bd23ca77774f704a04d40; affected 66e12f5b3a9733f941893a00753b10498724607d; affected 5.4.226 before 5.4.275; affected 5.10.157 before 5.10.216; affected 5.15.17 before 5.15.157; affected 5.16.3 before 5.17

Linux / Linux

affected 5.17; unaffected 0 before 5.17; unaffected 5.4.275 through 5.4.*; unaffected 5.10.216 through 5.10.*; unaffected 5.15.157 through 5.15.*; unaffected 6.1.88 through 6.1.*; unaffected 6.6.29 through 6.6.*; unaffected 6.8.8 through 6.8.*; unaffected 6.9 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.