Description
In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix address emission with tag-based KASAN enabled When BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image struct on the stack is passed during the size calculation pass and an address on the heap is passed during code generation. This may cause a heap buffer overflow if the heap address is tagged because emit_a64_mov_i64() will emit longer code than it did during the size calculation pass. The same problem could occur without tag-based KASAN if one of the 16-bit words of the stack address happened to be all-ones during the size calculation pass. Fix the problem by assuming the worst case (4 instructions) when calculating the size of the bpf_tramp_image address emission.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
077149478497b2f00ff4fd9da2c892defa6418d8 to < 9e80f366ebfdfafc685fe83a84c34f7ef01cbe88affectedd9664e6ff040798a46cdc5d401064f55b8676c83 to < f521c2a0c0c4585f36d912bf62c852b88682c4f2affected19d3c179a37730caf600a97fed3794feac2b197b to < 7db1a2121f3c7903b8e397392beec563c3d00950affected19d3c179a37730caf600a97fed3794feac2b197b to < a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1caffected6d218fcc707d6b2c3616b6cd24b948fd4825cfecaffected6.10.3 to < 6.11affected
Linux Linux
Default version status: affected
6.11affected0 to < 6.11unaffected6.11.6 to ≤ 6.11.*unaffected6.12 to ≤ *unaffected